Positioning, stabilizing, and interconnecting

Abstract

A head-mounted display system includes: a head-mounted display unit including: a display unit housing including a display; and an interface structure connected to the display unit housing and constructed and arranged to engage a user's face in use; and a positioning and stabilizing structure constructed and arranged to, in use, hold the head-mounted display unit in an operable position on a user's head, the positioning and stabilizing structure comprising: a pair of arms connected, in use, to respective lateral sides of the display unit housing, the arms are substantially rigid and constructed and arranged to project rearward from the display unit housing on respective lateral sides of the user's head in use, the rear portion of each arm comprising an upper arm connection and a lower arm connection; a top band portion configured and arranged to connect between each upper arm connection portion of the pair of arms and the head-mounted display unit; and an occipital bone strap portion constructed and arranged, in use, to be connected between the lower arm connection portions and to engage a portion of the user's head above or below an occipital bone region of the user's head.

Description

[0001] A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent Office patent file or records, but otherwise reserves all copyright rights whatsoever.

[0002] 1 Cross-reference to related applications

[0003] This application claims priority to Australian Provisional Application No. 2022900404 filed on February 22, 2022, Australian Provisional Application No. 2022900671 filed on March 18, 2022, and Australian Provisional Application No. 2022902498 filed on August 31, 2022, each of which is incorporated herein by reference in its entirety. Background Art 2.1 Technical Field

[0005] The present technology generally relates to head-mounted displays, positioning and stabilization structures, user interface structures, and other components used in head-mounted displays, including head-mounted display assemblies and systems, and methods, including display units and associated positioning and stabilization structures, interface structures, and / or components. The present technology finds particular application in the use of immersive reality head-mounted displays and is described herein in this context. It should be understood that the present technology may have broader application and may be used with any type of head-mounted display arrangement, including but not limited to virtual reality displays, augmented reality displays, and / or mixed reality displays.

[0006] 2.2 Description of Related Technologies

[0007] It should be understood that, if any prior art is referred to herein, this reference does not constitute an admission that the prior art forms part of the common general knowledge in the art, in Australia or any other country.

[0008] 2.2.1 Immersive Technology

[0009] Immersive technologies refer to technologies that attempt to replicate or augment the physical environment by means of a digital or virtual environment by creating a sense of immersion through the creation of surrounding sensory sensations.

[0010] Specifically, immersive technology provides user visual immersion and creates virtual objects and / or virtual environments. Immersive technology can also provide immersion for at least one of the other five senses.

[0011] 2.2.2 Virtual Reality

[0012] Virtual reality (VR) is a computer-generated three-dimensional image or environment presented to a user. In other words, the environment can be completely virtual. Specifically, the user observes a virtual or computer-generated image within a virtual environment on an electronic screen. Because the created environment is completely virtual, the user may be blocked and / or hindered from interacting with their physical surroundings (for example, they may not be able to hear and / or see physical objects in their current physical environment).

[0013] The electronic screen can be supported in the user's line of sight (for example, mounted to the user's head). When observing the electronic screen, the visual feedback output by the electronic screen and observed by the user can produce a virtual environment that simulates the actual environment. For example, the user can look around (for example, 360 degrees) by pivoting his or her head or his or her entire body, and interact with virtual objects that the user can observe through the electronic screen. This can provide the user with an immersive experience, in which the virtual environment provides stimulation to at least one of the user's five senses and replaces the corresponding stimulation of the physical environment when the user uses the VR device. Typically, the stimulation involves at least the user's vision (i.e., because they are viewing the electronic screen), but may also include other senses. Electronic screens are usually mounted to the user's head so that they can be positioned near the user's eyes, which allows the user to easily observe the virtual environment.

[0014] In addition to visual feedback, VR devices can also generate other forms of feedback. For example, a VR device can include and / or be connected to speakers to provide auditory feedback. VR devices can also include tactile feedback (e.g., in the form of haptic responses), which can correspond to visual and / or auditory feedback. This can create a more immersive virtual environment because the user receives stimulation corresponding to more than one of the user's senses.

[0015] When using a VR device, a user may wish to limit or block environmental stimuli. For example, a user may wish to avoid seeing and / or hearing the surrounding environment in order to better process the stimuli from the VR device in the virtual environment. Therefore, the VR device can limit and / or prevent the user's eyes from receiving ambient light. In some examples, this can be achieved by providing a seal against the user's face. In some examples, the shield may be arranged to be close to (e.g., in contact or in close contact with) the user's face, but may not be sealed against the user's face. In either example, ambient light may not reach the user's eyes, so that the only light observable to the user comes from the electronic screen.

[0016] In other examples, a VR device can limit and / or prevent a user's ears from hearing ambient noise. In some examples, this can be achieved by providing the user with headphones (e.g., noise-canceling headphones) that can output sound from the VR device and / or limit the user's hearing of noise from their physical environment. In some examples, the VR device can output sound at a volume sufficient to limit the user's hearing of ambient noise.

[0017] In any example, the user may not want to be overstimulated (e.g., by both their physical and virtual environments). Therefore, preventing and / or limiting the surrounding environment from stimulating the user helps the user focus on the virtual environment without being distracted by the surrounding environment.

[0018] Different types of VR devices are described below. Typically, a single VR device can be classified into at least two different categories. For example, a VR device can be classified based on its portability and how the display unit connects to the rest of the interface. The categories can be independent, so that the classification in one group (e.g., the portability of the unit) does not predetermine the classification in another group. There may also be additional categories for classifying VR devices, not explicitly listed below.

[0019] 2.2.2.1 Portability

[0020] 2.2.2.1.1 Fixed unit

[0021] In some forms, a VR device can be used in conjunction with a separate device, such as a computer or video game console. This type of VR device can be stationary, in that it cannot be used without the computer or video game console, and therefore the locations where it can be used are limited (e.g., by the location of the computer or video game console).

[0022] Because VR devices can be used in conjunction with computers or video game consoles, they can be connected to the computer or video game console. For example, a wire can be used to tie the two systems together. This can further "fix" the position of the VR device, as the user wearing the VR device cannot move further from the computer or video game console than the length of the wire. In other examples, the VR device can connect wirelessly (e.g., via Bluetooth, Wi-Fi, etc.), but can still be relatively fixed by wireless signal strength.

[0023] A connection to a computer or video game console can provide control functionality to the VR device. A controller can communicate (i.e., via a wired connection or wirelessly) to help operate the VR device. In the example of a fixed-unit VR device, the controls may be necessary to operate the display, and the VR device may be inoperable without a connection to the computer or video game console.

[0024] In some versions, a computer or video game console can provide power to the VR device so that the user does not need to support batteries on their head. This can make the VR device more comfortable to wear because the user does not need to support the weight of the batteries.

[0025] The user may also receive output from a computer or video game console at least partially through the VR device, as opposed to through a television or monitor, which can provide the user with a more immersive experience when using the computer or video game console (e.g., playing a video game). In other words, the display output of the VR device can be substantially the same as the output of a computer monitor or television. Some of the controllers and / or sensors required to output the images can be housed in the computer or video game console, which can further reduce the weight that the user needs to support on their body.

[0026] In some versions, the motion sensor can be located remotely from the VR device and connected to a computer or video game console. For example, at least one camera can be oriented toward the user to track the user's head movements. Data recorded by the camera can be processed by the computer or video game console before being sent to the VR device. While this can help reduce the weight of the VR device, it can also further limit where the VR device can be used. In other words, the VR device must be within the camera's line of sight.

[0027] 2.2.2.1.2 Portable units

[0028] In some forms, the VR device can be a standalone unit that includes a power source and sensors, so that the VR device does not need to be connected to a computer or video game console. This provides users with more freedom of use and movement. For example, the user is not limited to using the VR device near a computer or video game console and can use the VR device outdoors or in other environments that do not include a computer or television.

[0029] Since VR devices are not connected to a computer or video game console during use, they are required to support all necessary electronic components. This includes batteries, sensors, and processors. These components add weight to the VR device, which the user must support on their body. Appropriate weight distribution may be required so that this added weight does not cause discomfort to the user wearing the VR device.

[0030] In some versions, the electronic components of a VR device are contained in a single housing that can be positioned directly in front of the user's face during use. This configuration may be referred to as a "brick." In this configuration, the center of gravity of the VR device, without positioning and stabilizing structures, is directly in front of the user's face. To counteract the moment created by gravity, positioning and stabilizing structures attached to the brick must provide forces directed toward the user's face, such as those generated by tension in the headband. While brick configurations may be advantageous for manufacturing (for example, because all electrical components are in close proximity) and allow for interchangeability of positioning and stabilizing structures (for example, because they do not include electrical connections), the forces required to maintain the VR device's position (such as tension in the headband) can be uncomfortable for the user. Specifically, the VR device may dig into the user's face, causing irritation and markings on the user's skin. When the user's head receives force from the display housing on the face and force from the headgear on the back of the head, the combined forces can feel like "clamping." This can make the user less likely to wear the VR device.

[0031] Because VR and other mixed reality devices can be used in a manner that involves vigorous movement of the user's head and / or their entire body (e.g., during gaming), there may be significant forces / torques that tend to break the position of the device on the user's head. Simply forcing the device closer to the user's head to withstand large breaking forces may be unacceptable because this may be uncomfortable for the user or become uncomfortable after only a short time.

[0032] In some forms, electrical components can be spaced throughout the VR device, rather than being located entirely in front of the user's face. For example, some electrical components (e.g., a battery) can be located on the positioning and stabilizing structure, particularly on the rear contact portion. This way, the weight of the battery (or other electronic components) can generate a torque that points in the opposite direction to the torque generated by the rest of the VR device (e.g., the display). As a result, it may be sufficient for the positioning and stabilizing structure to apply a lower clamping force, which in turn generates lower forces on the user's face (e.g., fewer marks on their skin). However, in some such existing devices, cleaning and / or replacing the positioning and stabilizing structure can be more difficult due to the electrical connections.

[0033] In some forms, spacing out the electrical components may include positioning some of the electrical components separately from the rest of the VR device. For example, a battery and / or processor may be electrically connected but carried separately from the rest of the VR device. Unlike the "fixed unit" described above, the battery and / or processor, along with the rest of the VR device, may be portable. For example, the battery and / or processor may be carried on a user's belt or in a user's pocket. This may provide the benefit of reducing the weight on the user's head, but may not provide a counteracting moment. Since the total weight supported by the head is less, the tension provided by the positioning and stabilizing structure may still be less than a "brick" structure.

[0034] 2.2.2.2 Display Connection

[0035] 2.2.2.2.1 Integrated Display

[0036] In some forms, the display screen is an integral piece of the VR device and is generally not detachable or removable from the rest of the VR device.

[0037] The display can be secured within the housing and protected from damage. For example, the display can be completely covered by the housing, which can reduce the risk of scratches. Furthermore, integrating the display with the rest of the VR device prevents the display from being lost.

[0038] In these forms, the display is used purely as an immersive technology display. The vast majority of "fixed units" will include an integrated display. "Portable units" may include an integrated display, or may include a removable display (described below).

[0039] 2.2.2.2.2 Movable Display Screen

[0040] In some forms, the display screen is a separate structure that can be removed from the VR device and used independently.

[0041] In some forms, a portable electronic device (e.g., a cellular phone) can be selectively inserted into the housing of the VR device. The portable electronic device can include most or all of the sensors and / or processors and can create the virtual environment through a downloadable application.

[0042] Portable electronic devices are generally lightweight and may not require positioning and stabilizing structures to apply significant forces to a user's head.

[0043] 2.2.3 Augmented Reality

[0044] In some forms, augmented reality (AR) is a computer-generated three-dimensional image or environment presented to a user.

[0045] While similar to VR, AR differs in that a virtual environment, created at least in part by an electronic screen, is viewed in conjunction with the user's physical surroundings. In other words, AR creates virtual objects that alter and / or augment the user's physical surroundings with elements of the virtual environment. The result of AR is a combined environment that includes both physical and virtual objects, and is therefore both physical and virtual.

[0046] For example, images created by an electronic screen can be overlaid onto the user's physical environment. Only a portion of the combined AR environment presented to the user includes virtual objects. Therefore, the user may wish to continue receiving environmental stimuli from their physical environment while using the AR device (e.g., to continue observing physical or non-virtual components of the combined environment).

[0047] Because AR can be used with the user's physical environment, the AR device may not be electrically connected or otherwise tethered to a computer or video game console. Instead, the AR device may include a battery or other power source. This can provide the user with maximum freedom of movement, allowing them to explore various physical environments while using the AR device.

[0048] This key difference between VR and AR may lead to different types of wearable electronic screens. As mentioned above, users of VR devices may wish to block ambient light, so the housing of the electronic screen may be opaque to limit or prevent ambient light from reaching the user. However, users of AR devices may want to see a virtual environment blended with their real surroundings. The electronic screen in an AR device can similarly be supported in front of the user's eyes, but the screen in an AR device can be transparent or translucent, and the screen may not be supported by an opaque housing (or the opaque material may not substantially obstruct the user's view). This allows the user to continue to receive stimuli from their surroundings while the virtual environment simultaneously exists. Nevertheless, some VR devices that do not have a transparent screen through which the user can see their real-world environment can be configured for AR by capturing a real-time video of the user's real-world environment from the user's perspective (e.g., using a camera on the display housing) and displaying it on the display screen.

[0049] Additionally, people using AR devices may move more than people using VR devices (e.g., because AR users can see their physical environment and / or are not tethered to a computer or video game console). Consequently, people using AR devices may want to wear the device for extended periods while also moving around (e.g., walking, running, cycling, etc.). Including components such as batteries on an AR device may make the AR device uncomfortable for the user's head and / or neck and may discourage the user from wearing the AR device for extended periods of time.

[0050] 2.2.4 Mixed Reality

[0051] Mixed reality (MR) is similar to AR, but potentially more immersive because MR devices can offer users more ways to interact with virtual objects or environments than AR devices. Virtual reality in MR can also overlap and / or blend with the user's physical surroundings. However, unlike AR, users are able to interact with the virtual environment similar to what happens in VR. In other words, whereas AR can present only computer-generated images in a physical environment, MR can present the same or similar computer-generated images to the user, but allow interaction with the images in the physical environment (e.g., using hands to "grab" a virtual object). As a result, the virtual environment can be further merged with the physical environment, making the combined environment better replicate the actual environment.

[0052] 2.2.5 Head-mounted display interface

[0053] Head-mounted display interfaces enable users to have an immersive experience of a virtual environment and have wide applications in fields such as communications, training, medical and surgical practice, engineering, and video gaming.

[0054] Different head-mounted display interfaces can each provide different levels of immersion. For example, some head-mounted display interfaces can provide a fully immersive experience to the user. An example of a fully immersive experience is virtual reality (VR). Head-mounted display interfaces can also provide partial immersion consistent with using an AR device.

[0055] VR head-mounted display interfaces are typically provided as a system including a display unit arranged to be maintained in an operating position in front of a user's face. The display unit typically includes a housing containing a display and a user interface structure, the user interface structure being constructed and arranged to be opposite the user's face. The user interface structure may extend around the display and, together with the housing, define a viewing opening for the display. The user interface structure may engage with the face and include padding for user comfort, and / or may be light-sealed to block ambient light from the display. The head-mounted display system also includes a positioning and stabilizing structure that is disposed on the user's head to hold the display unit in place.

[0056] Other head-mounted display interfaces can provide less than fully immersive experiences. In other words, users can experience their physical environment as well as elements of the virtual environment. Examples of less than fully immersive experiences are augmented reality (AR) and mixed reality (MR).

[0057] AR and / or MR head-mounted display interfaces are also typically provided as a system that includes a display unit that is arranged to be maintained in an operating position in front of the user's face. Likewise, the display unit typically includes a housing containing a display and user interface structures that are constructed and arranged to be opposite the user's face. The head-mounted display system of an AR and / or MR head-mounted display is also similar to VR in that it also includes positioning and stabilization structures that are provided on the user's head to hold the display unit in place. However, the AR and / or MR head-mounted display does not include padding to completely seal out ambient light from the display because the less than fully immersive experience requires elements of the physical environment. In contrast, augmented and / or hybrid head-mounted displays allow the user to see the physical environment combined with the virtual environment.

[0058] In any type of immersive technology, it is important that the head-mounted display interface is comfortable, so as to allow the user to wear the head-mounted display for extended periods of time. Additionally, it is important that the display be able to provide a changing image with varying user head position and / or orientation, so as to create an environment, whether partially virtual or fully virtual, that resembles or replicates a fully physical environment.

[0059] 2.2.5.1 Interface structure

[0060] A head-mounted display may include a user interface structure. Since it is in direct contact with the user's face, the shape and construction of the interface portion can directly affect the effectiveness and comfort of the display unit.

[0061] Designing user interface structures presents numerous challenges. The surface has a complex three-dimensional shape. The size and shape of the nose and head vary significantly between individuals. Because the head is composed of bone, cartilage, and soft tissue, different areas of the face respond differently to mechanical forces.

[0062] One type of interface structure extends around the perimeter of the display unit and, when force is applied to the user interface, engages against the user's face, thereby creating a seal. The interface structure may include a pad made of polyurethane (PU). With this type of interface structure, there may be a gap between the interface structure and the face, and additional force may be required to force the display unit against the face to achieve the desired contact.

[0063] Areas where the user interface does not engage at all can allow gaps to form between the facial interface and the user's face, through which undesirable light pollution can enter the display unit (e.g., particularly when using virtual reality). Light pollution, or "light leakage," can reduce the efficacy and enjoyment of the user's overall immersive experience. Furthermore, previous systems can be difficult to adjust to accommodate a wide variety of head sizes. Furthermore, the display unit and associated stabilizing structures are often relatively heavy and can be difficult to clean, further limiting the comfort and usability of the system.

[0064] Another type of interface structure includes a sheet-like seal of thin material positioned around a portion of the perimeter of the display unit to provide a seal against the user's face. As with the previous types of interface structures, if the fit between the surface and the interface structure is poor, excessive force may be required to achieve a seal, or light may leak into the display unit during use. Furthermore, if the shape of the interface structure does not match the shape of the user, it may wrinkle or bend during use, resulting in undesirable light penetration.

[0065] The user interface may be characterized in part by the design intent of the interface structure to engage the face in use. Some interface structures may be limited to engaging with areas of the user's face that protrude beyond the curved arc of the face-engaging surface of the interface structure. Such areas typically include the user's forehead and cheekbones. This may result in user discomfort at localized pressure points. Other facial areas may not be engaged by the interface structure at all, or may be engaged only in a negligible manner, thereby insufficiently increasing the translational distance of the clamping pressure. Such areas may typically include the sides of the user's face, or the area adjacent to and surrounding the user's nose. To the extent there is a mismatch between the user's facial shape and the interface structure, it is advantageous that the interface structure or related components are adaptable so as to form the appropriate contact or other relationship.

[0066] 2.2.5.2 Positioning and stabilization

[0067] In order to maintain the display unit in its correct operating position, the head-mounted display system also includes a positioning and stabilizing structure provided on the user's head. The structure may be responsible for providing a force to counteract the weight of the head-mounted display and / or interface structure. In the past, the structure was formed by an expandable rigid structure that was typically applied to the head under tension to maintain the display unit in its operating position. Such systems tend to exert clamping pressure on the user's face, which may cause discomfort to the user at localized stress points. Moreover, previous systems may be difficult to adjust to accommodate a wide range of applied head sizes. In addition, the display unit and associated stabilizing structure are typically heavy and difficult to clean, which further limits the comfort and usability of the system.

[0068] Certain other head-mounted display systems may not be functionally suitable for this application. For example, positioning and stabilization structures designed for decorative and visual aesthetics may not have the structural capability to maintain appropriate pressure around the face. For example, excessive clamping pressure may cause user discomfort, or insufficient clamping pressure on the user's face may not effectively seal the display from ambient light.

[0069] Certain other head-mounted display systems may be uncomfortable or impractical for the present technology, such as if the system is used for an extended period of time.

[0070] As a result of these challenges, some head-mounted displays suffer from one or more of the following: being obtrusive, unsightly, expensive, ill-fitting, difficult to use, and uncomfortable, especially when worn for extended periods or when the user is unfamiliar with the system. Wrong-sized positioning and stabilization structures can reduce comfort and, in turn, shorten usage time.

[0071] Thus, the interface portions of the user interface for a fully immersive experience of the virtual environment are subjected to forces corresponding to the movements of the user during the experience.

[0072] 2.2.5.3 Materials

[0073] The materials used for head-mounted display components include dense foam for portions of the contact interface structure, a rigid shell for the housing, and positioning and stabilization structures formed by rigid plastic clamping structures. These materials have various disadvantages, including not allowing the skin covered by the material to breathe, being inflexible, difficult to clean, and prone to trapping bacteria. As a result, products made with these materials can be uncomfortable when worn for extended periods, causing skin irritation in some individuals and limiting their application. Summary of the Invention

[0074] The present technology may be directed to providing positioning and stabilization structures for supporting, stabilizing, mounting, utilizing, and / or securing a head-mounted display with one or more of improved comfort, cost, efficacy, ease of use, and manufacturability.

[0075] A first aspect of the present technology relates to an apparatus for supporting, stabilizing, mounting, utilizing, and / or securing a head-mounted display.

[0076] Another aspect of the present technology relates to methods for supporting, stabilizing, mounting, utilizing, and / or securing a head-mounted display.

[0077] Another aspect is a positioning and stabilising structure for a head mounted display comprising a rear (or posterior) support structure (or portion) arranged to contact a posterior region of a user's head during use.

[0078] In some forms, the rear support portion, or at least a portion thereof, is positioned posterior to a base point on the user's ear.

[0079] In some forms, the rear support is biased into contact with the occipital region of the user.

[0080] In some forms, the positioning and stabilizing structure further comprises opposing connectors disposed on opposing sides of the user's head and extending along the temporal region of the user's head to interconnect the rear support portion to the head-mounted display unit. In some forms, the positioning and stabilizing structure comprises connecting the rear support portion to the front support portion of the head-mounted display unit.

[0081] The technology also relates to providing interface structures for supporting, cushioning, stabilizing, positioning and / or sealing a head-mounted display relative to a user's face.

[0082] Another aspect relates to an apparatus for supporting, cushioning, stabilizing, positioning, and / or sealing a head-mounted display relative to a user's face.

[0083] Another aspect relates to a method for supporting, cushioning, stabilizing, positioning, and / or sealing a head-mounted display relative to a user's face.

[0084] Another aspect of the present technology relates to a head-mounted display system including a head-mounted display unit, the head-mounted display unit including:

[0085] 1) a display unit housing including a display; and 2) an interface structure connected to the display unit housing and constructed and arranged to engage a user's face during use. The head-mounted display system also includes a positioning and stabilizing structure constructed and arranged to maintain the head-mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising: 1) a pair of arms connected to respective sides of the display unit housing during use, the arms constructed and arranged to project rearwardly from the display unit housing on respective sides of the user's head during use, the rear portion of each arm comprising an upper arm connection and a lower arm connection; 2) a top strap constructed and arranged to connect between each of the upper arm connections of the pair of arms, the top strap configured to engage the user's head at a head region above the position of the pair of arms during use; and 3) an occipital strap constructed and arranged to connect between the lower arm connections during use and engage a portion of the user's head above or below the occipital region of the user's head.

[0086] In one example, when the head-mounted display system is worn, a portion of each arm located at the rear of the head-mounted display unit has increased rigidity compared to the top strap portion.

[0087] In other examples: a) the arms are pivotally attached to the display unit housing; b) each arm is at least partially covered by a fabric sleeve; c) the top strap portion is connected to the head-mounted display unit except for each of the upper arm connecting portions of the pair of arms; d) the top strap portion is connected to the head-mounted display unit at a single location; e) the top strap portion is substantially Y-shaped, with the top strap portion having front legs connected to the head-mounted display unit and a pair of rear legs connected to the upper arm connecting portions of the pair of arms; f) the length of at least a portion of the top strap portion is selectively adjustable; g) the top strap portion is configured to pass through the head-mounted display unit on eyelets, and loops to secure to itself; h) the top strap portion is configured to secure to itself with a hook and loop connection; i) the occipital strap portion includes an occipital strap connector at one end of the occipital strap portion, the occipital strap connector being constructed and arranged to be releasably connected to a corresponding one of the lower arm connections of the arms; j) the occipital strap connector is constructed and arranged to magnetically attach to the corresponding one of the lower arm connections; k) the length of the occipital strap portion is selectively adjustable; l) the occipital strap portion is configured to pass through the eyelets, loops and secure to itself on the occipital strap connector; and / or m) the occipital strap portion is configured to secure to itself with a hook and loop connection.

[0088] In other examples: n) one or both of the arms are formed as two parts that can be releasably connected to each other; o) the two parts of each arm can be movably connected to each other to provide size adjustment of the positioning and stabilizing structure; p) one or both of the arms can be releasably connected to the head mounted display unit; q) one or both of the lower arm connections can be moved relative to the remainder of the corresponding arm; r) the upper arm connection and the lower arm connection of each arm are positioned behind the supra-ear base point of the user's head during use; s) in use, each arm is configured to resist bending in an upward and downward direction; t) in use, each arm is configured to allow bending in a medial direction to engage a partially rearward-facing surface of the user's head; u) in use, when the The top strap portion is in a tensioned state, and the upper arm connection portion is pushed toward the surface of the user's head; v) when the head-mounted display system is worn, the occipital strap portion is configured to push the lower arm connection portion toward the surface of the user's head when the occipital strap portion is tightened; w) each arm includes one or more hinges to facilitate bending the corresponding arm to conform to the shape of the user's head when the head-mounted display system is worn; x) the lower arm connection portion is configured to be positioned behind the supra-auricular base point of the user's head during use; y) when the head-mounted display system is worn, each arm protrudes rearwardly and bends medially at the rear of the user's head; and / or z) when the head-mounted display system is worn, each arm protrudes rearwardly and bends upwardly away from the display unit housing.

[0089] Another aspect of the present technology relates to a positioning and stabilizing structure for maintaining a head-mounted display unit in an operating position on a user's head, the positioning and stabilizing structure comprising: a) a ring-shaped annular band portion, the ring-shaped band portion including an occipital band portion, the occipital band portion being constructed and arranged to engage an area of ​​the user's head that covers the occipital bone or covers the parietal bone near the occipital bone; and b) a pair of lateral band portions, the lateral band portions being configured to extend along corresponding sides of the user's head during use, each of the lateral band portions having: 1) a rear end portion that is connected to a corresponding side of the ring-shaped band portion at a connection position; and 2) a front end portion that is suitable for connecting to a corresponding side of the head-mounted display unit.

[0090] In one example, each connection location is positioned higher than the front end of the corresponding lateral strap portion when the positioning and stabilising structure is worn in use.

[0091] In other examples: a) each of the lateral strap portions extends at least partially upward in a direction from the front end portion to the rear end portion; b) the hoop portion is configured to substantially maintain its in-use shape when the positioning and stabilizing structure is not worn by the user; c) the positioning and stabilizing structure is configured to resist changes in the angle between the upper transverse strap portion and the occipital strap portion when the lateral strap portions are tensioned in use; d) the width of the occipital strap portion measured transverse to the length of the occipital strap portion is greater than the width of the upper transverse strap portion measured transverse to the length of the upper transverse strap portion; e) the thickness of the hoop portion is greater than the thickness of the lateral strap portions; f) the hoop portion is configured to substantially maintain its in-use shape when the positioning and stabilizing structure is not worn by the user; The thickness of the strap portion is greater than the thickness of the top strap portion; g) the loop strap portion includes a plurality of segments formed separately and connected together to form the loop strap portion; h) the segments include an upper segment, a pair of lateral segments and a lower segment; i) the loop strap portion includes at least a pair of hinges, each hinge being located near one of the connection locations between the loop strap portion and a corresponding one of the lateral strap portions; j) the length of each of the lateral strap portions is selectively adjustable; k) each of the lateral strap portions is configured to be secured to itself to form a loop suitable for connection to the head-mounted display unit; and / or 1) each of the lateral strap portions is configured to be secured to itself by a hook and loop connection.

[0092] In other examples: m) the occipital strap is constructed and arranged to be positioned at or near the Frankfurt plane of the user's head when in use; n) the positioning and stabilizing structure also includes a top strap, which is connected to the upper lateral strap or the occipital strap and is configured to extend forward from the upper lateral strap or the occipital strap over a portion of the user's head covering the user's frontal bone when in use, the top strap being suitable for connection to the head-mounted display unit; o) the loop strap has a rigidity at a position along its length that is different from the rigidity at a position along the length of each lateral strap; p) the length of the top strap is selectively adjustable; q) the top strap is configured to be secured to itself to form a loop suitable for connection to the head-mounted display unit; r) the top strap is configured to be secured to itself by a hook and loop connection; s) in use, The loop portion is wider in the upper lateral strap portion at a location where it intersects the sagittal plane of the user's head than at other locations around the loop portion; t) the upper lateral strap portion has a greater width at the location where it intersects the sagittal plane than at lateral portions of the upper lateral strap portion; u) the upper lateral strap portion includes a front edge and a rear edge, the front edge being more curved than the rear edge to form a greater width; v) the front edge is curved forward in a lateral to medial direction, and the rear edge is not substantially curved forward or backward; w) the loop portion has increased rigidity in an area directly adjacent to the connection location compared to the rigidity in at least one other area of ​​the loop portion; and / or x) the loop portion also includes an upper lateral strap portion that is constructed and arranged to engage an upper area of ​​the user's head at or near the coronal plane.

[0093] Another aspect of the present technology relates to a head-mounted display system including a head-mounted display unit, wherein the head-mounted display unit includes: 1) a display unit housing including a display; and 2) an interface structure, which is connected to the display unit housing and is constructed and arranged to engage the user's face during use. The head-mounted display also includes a positioning and stabilizing structure, which is constructed and arranged to maintain the head-mounted display unit in an operable position on the user's head during use, and the positioning and stabilizing structure includes: a strap portion, which is constructed and arranged to surround the user's head, engage the area of ​​the user's head covering the frontal bone and form an occipital strap portion during use, and the occipital strap portion is constructed and arranged to engage the area of ​​the user's head covering the occipital bone or located below the occipital bone, wherein the head-mounted display unit can be pivotally attached to the strap portion at a pair of pivot connections, and the pair of pivot connections are arranged to be positioned on corresponding sides of the user's head during use so that the head-mounted display unit can pivot relative to the strap portion about an axis aligned perpendicular to the sagittal plane of the user's head, thereby allowing the display to move in an upward and downward direction during use.

[0094] In an embodiment: a) the pivot connection is located near the mid-coronal plane of the user's head during use; b) the strap portion includes a pair of slots, the pivot connection is located within the slots, and the slots allow the pivot connection to move relative to the strap portion along the length of the slots; c) the pivot connection enables the head mounted display unit to move at least partially forward during pivoting; d) the head mounted display unit is configured to pivot between a viewing position and a non-viewing position, in which the head mounted display unit is positioned above the user's eyes and in which the head mounted display unit is positioned above the user's frontal bone; e ) the slot is configured to cause the pivotal connection to move at least partially forward when the head-mounted display is pivoted from the viewing position to the non-viewing position; f) the positioning and stabilizing structure includes a parietal strap portion, which is configured to engage the user's head at an area of ​​the parietal bone covering the user's head during use; g) the parietal strap portion is connected to the strap portion; h) when the head-mounted display system is worn, the parietal strap portion is connected to the strap portion at a position spaced forward of the pivotal connection; and / or i) the parietal strap portion includes a pair of elastically extendable side portions proximate the strap portion and a rear portion that extends less than the elastically extendable side portions.

[0095] In other examples: j) the head mounted display system further comprises a battery pack for powering the head mounted display system; k) the battery pack is attached to the occipital strap portion; l) the length of the strap portion is adjustable; m) the strap portion comprises a dial adjustment mechanism, the dial adjustment mechanism comprising a rotatable dial, the dial adjustment mechanism being configured to cause a change in the length of the strap portion when the dial is rotated; n) the dial adjustment mechanism is disposed in the occipital strap portion of the strap portion; o) the dial is positioned in use relative to the user in a sagittal plane of the head; p) wherein the head-mounted display system includes a pair of battery packs mounted to the occipital strap portion, each of the battery packs being located on a respective side of the dial; q) the strap portion includes an outer layer formed of a fabric material; r) the strap portion includes a rigidizer; s) the strap portion includes a fabric sleeve with the rigidizer within the fabric sleeve; t) the positioning and stabilizing structure includes a forehead pad attached to the strap portion and configured to engage the user's forehead; and / or u) the forehead pad includes a fabric material.

[0096] Another aspect of the present technology relates to a positioning and stabilizing structure for maintaining a head-mounted display unit in an operating position on a user's head, the positioning and stabilizing structure comprising: 1) a pair of lateral strap portions adapted to be connected to respective lateral sides of the head-mounted display unit, the lateral strap portions being connected to each other behind the user's head to form a strap portion that partially surrounds the user's head when the positioning and stabilizing structure is worn; 2) an adjustment mechanism disposed between the lateral strap portions so as to connect the lateral strap portions at a rear region of the user's head, the adjustment mechanism being configured to simultaneously and equally adjust the length of the two lateral strap portions, thereby adjusting the length of the strap portion; and 3) an occipital strap portion constructed and arranged to engage an area of ​​the user's head that covers the occipital bone.

[0097] In an embodiment: a) the occipital strap portion is connected to the strap portion; b) the adjustment mechanism is constructed and arranged to allow the user to selectively adjust the length of the strap portion when the positioning and stabilizing structure is worn by the user; c) the adjustment mechanism includes a dial adjustment mechanism, the dial adjustment mechanism including a dial, which adjusts the length of the strap portion when rotated; d) the dial is positioned in the sagittal plane of the user's head during use; e) the strap portion is configured to engage the area of ​​the user's head covering the parietal bone during use; f) the strap portion includes a rigidizer that imparts rigidity to the strap portion at least in the area of ​​the user's head covering the parietal bone; g) the entire strap portion includes a rigidizer that imparts rigidity to the strap portion; h) when the positioning and stabilizing structure is worn, the lateral strap portions are configured to be located in use, each, on a path that extends partially rearwardly from the head mounted display unit rearwardly toward a rear region of the user's head; and / or i) the occipital strap portion is semi-rigid.

[0098] In other examples: j) the occipital strap portion includes a fabric sleeve and at least one rigidizer within the fabric sleeve; k) the length of the fabric sleeve is elastically extendable to allow size adjustment of the occipital strap portion; l) the fabric sleeve is a knitted tube; m) the occipital strap portion includes a pair of rigidizers, each rigidizer including a rear end, the rear ends of the rigidizers being laterally spaced apart from each other near the rear surface of the user's head when the positioning and stabilizing structure is worn; n) each rigidizer extends rearwardly and bends inwardly to follow the curvature of the rear surface of the user's head when the positioning and stabilizing structure is worn; o) each rigidizer extends rearwardly when the positioning and stabilizing structure is worn. extending and bending downwardly and inwardly to follow the curvature of the rear surface of the user's head; p) the fabric sleeve is constrained by the rigid members to lie on a curved path defined by the curvature in each rigid member, the fabric sleeve being configured to elastically extend over and along the length of the rigid members; q) the positioning and stabilizing structure further includes a top strap portion connected to the strap portion and adapted to be attached to the head-mounted display unit; r) the top strap portion is aligned with the sagittal plane of the user's head; s) the top strap portion is configured to be secured to itself to form a loop adapted to be connected to the head-mounted display unit; and / or t) the top strap portion is constructed and arranged to be secured to itself by a hook and loop connection.

[0099] Another aspect of the present technology relates to a positioning and stabilizing structure for maintaining a head-mounted display unit in an operating position on a user's head, the positioning and stabilizing structure comprising: 1) an upper lateral strap portion, the upper lateral strap portion being constructed and arranged to engage an upper portion of the user's head and extending from one lateral side of the user's head to the other lateral side during use; 2) an occipital strap portion, the occipital strap portion being constructed and arranged to engage an area of ​​the user's head covering the occipital bone during use; 3) a pair of connecting portions, the upper lateral strap portion and the occipital strap portion being connected at the connecting portions, the connecting portions being configured to respectively engage the lateral sides of the user's head during use; and 4) a pair of lateral strap portions, the lateral strap portions being configured to extend along the lateral sides of the user's head during use, each of the lateral strap portions having a front portion adapted to be connected to the head-mounted display unit and a rear portion connected to the corresponding connecting portions of the upper lateral strap portion and the occipital strap portion.

[0100] In one example, each of the lateral straps includes a rigidifier that imparts rigidity to the lateral strap.

[0101] In other examples: a) the upper transverse strap portion is substantially aligned with the coronal plane of the user's head during use, the coronal plane being aligned with each supra-auricular base point of the user's head; b) the upper transverse strap portion is wider in the sagittal plane of the user's head than near the connection with the occipital strap portion during use; c) the lateral strap portions and the upper transverse strap portion are integrally formed; d) portions of the upper transverse strap portion proximal to the respective lateral strap portions include rigid members that impart rigidity to the upper transverse strap portion; e) the upper transverse strap portion includes rigid members that impart rigidity to the upper transverse strap portion along its entire length; f) the positioning and stabilizing structure includes a single rigid member that extends from one lateral strap portion through the upper transverse strap portion and into the other lateral strap portion; g) the connection of the occipital strap portion to the upper transverse strap portion is The occipital strap portion may further comprise a plurality of rigid members disposed adjacent to the occipital strap portion and adjacent to the occipital strap portion; h) the single rigid member includes a rearwardly projecting portion extending into the respective ends of the occipital strap portion; i) the occipital strap portion includes an occipital strap connector at one end of the occipital strap portion, the occipital strap connector being constructed and arranged to be releasably connected to the occipital strap connector at or near one of the junctions between the occipital strap portion and the upper lateral strap portion; j) the occipital strap connector being constructed and arranged to be magnetically attached to the occipital strap connector; k) the length of the occipital strap portion may be selectively adjusted; l) the occipital strap portion is configured to pass through an eyelet, loop, and secure to itself on the occipital strap connector; and / or m) the occipital strap portion is configured to secure to itself using a hook and loop connection.

[0102] In other instances: n) each of the lateral strap portions includes an upper lateral strap connection portion connected to the upper lateral strap portion and an occipital strap connection portion connected to the occipital strap portion; o) the length of each of the upper lateral strap portion and the occipital strap portion is selectively adjustable simultaneously; p) the length of each of the lateral strap portions is selectively adjustable; q) each of the lateral strap portions is configured to be secured to itself to form a loop suitable for connection to the head-mounted display unit; r) each of the lateral strap portions is configured to be secured to itself by a hook and loop connection; s) the positioning and stabilizing structure further includes a top strap portion, which is connected to the upper lateral strap portion and is suitable for connection to the head-mounted display unit; t) the length of the top strap portion is selectively adjustable; u) the top strap portion is suitable for connection to the head-mounted display unit at a single location; v) the top strap portion is constructed and arranged to be secured to itself to form a loop suitable for connection to the head-mounted display unit; and / or w) the top strap portion is constructed and arranged to be secured to itself by a hook and loop connection.

[0103] Another aspect of the present technology relates to a head-mounted display system including a head-mounted display unit, wherein the head-mounted display unit includes: 1) a display unit housing including a display; 2) an interface structure, which is connected to the display unit housing and is constructed and arranged to engage the user's face during use; and 3) a positioning and stabilization structure of any of the above aspects.

[0104] In an embodiment: a) the head-mounted display unit includes a pair of arms extending rearwardly from respective lateral sides of the display unit housing, and the lateral strap portions are each configured to attach to a respective one of the arms; b) the arms are pivotally attachable to the head-mounted display unit (e.g., the display unit housing); c) the lateral strap portions are constructed and arranged to attach to the interface structure of the head-mounted display unit; d) the lateral strap portions are constructed and arranged to attach to the display unit housing of the head-mounted display unit; e) the head-mounted display unit includes a pair of side shields extending rearwardly from respective lateral sides of the head-mounted display unit through side portions of the interface structure; f) in use, each of the side shields extends rearwardly to a position proximate a respective supra-auricular base point of the user's head; g) the occipital strap portion is constructed and arranged to attach to the side shields; h) the occipital strap portion is attached to the strap portion near the head-mounted display unit; and / or i) the occipital strap portion is connected to the head-mounted display unit.

[0105] Another aspect of the present technology relates to a head-mounted display system comprising:

[0106] A head-mounted display unit, comprising:

[0107] a display unit housing including a display; and

[0108] an interface structure connected to the display unit housing and constructed and arranged to engage a user's face in use; and

[0109] a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0110] a pair of arms connected in use to respective sides of the display unit housing, the arms being constructed and arranged to project rearwardly from the display unit housing on respective sides of the user's head in use, the rear portion of each arm comprising an upper arm connection portion and a lower arm connection portion;

[0111] a top strap portion constructed and arranged to connect between each of the upper arm connecting portions of the pair of arms;

[0112] An occipital strap is constructed and arranged to be connected between the lower arm links and to engage a portion of the user's head above or below the occipital region of the user's head in use.

[0113] In the examples:

[0114] the arm being pivotally attached to the display unit housing;

[0115] Each arm is at least partially covered by a fabric sleeve;

[0116] the top strap portion being connected to the head mounted display unit except for each of the upper arm connecting portions of the pair of arms;

[0117] The top strap portion is connected to the head mounted display unit at a single location;

[0118] The top strap portion is substantially Y-shaped;

[0119] The length of at least a portion of the top strap portion is selectively adjustable;

[0120] The top strap portion is configured to pass through the eyelets on the head-mounted display unit and loop back to be fixed to itself;

[0121] The top strap portion is secured to itself via a hook-and-loop connection;

[0122] the occipital strap portion including an occipital strap connector at one end of the occipital strap portion, the occipital strap connector being constructed and arranged to be releasably connected to a respective one of the lower arm connectors of the arm;

[0123] said occipital strap connector constructed and arranged to magnetically attach to said corresponding one of said lower arm connectors;

[0124] The length of the occipital girdle can be selectively adjusted;

[0125] The occipital strap portion passes through the eyelet and loop on the occipital strap connector and is fixed to itself;

[0126] The occipital strap portion is secured to itself with a hook and loop connection;

[0127] One or both of the arms are formed as two parts releasably connectable to each other;

[0128] The two portions of each arm are movably connected to each other to provide dimensional adjustment of the positioning and stabilizing structure;

[0129] One or both of the arms are releasably connectable to the head mounted display unit;

[0130] One or both of the lower links are movable relative to the remainder of the respective arm;

[0131] The upper connecting portion and the lower connecting portion of each arm are positioned behind a supra-ear base point of the user's head in use;

[0132] In use, each arm is configured to resist bending in both upward and downward directions.

[0133] In use, each arm is configured to allow bending toward a medial direction to engage a portion of a rearwardly facing surface of the user's head;

[0134] When the top strap portion is in a tensioned state, the upper connecting portion is pushed toward the surface of the user's head;

[0135] When the occipital strap is tightened, the lower connecting portion is pushed toward the surface of the user's head;

[0136] Each arm includes one or more hinges to facilitate bending the corresponding arm to conform to the shape of the user's head;

[0137] The lower arm connection portion is positioned behind the supra-ear base point of the user's head during use;

[0138] Each arm projects rearwardly and curves medially behind the back of the user's head; and / or

[0139] Each arm protrudes rearward and bends upward away from the display unit housing.

[0140] Another aspect of the present technology relates to a head-mounted display system comprising:

[0141] A head-mounted display unit, comprising:

[0142] a display unit housing including a display; and

[0143] an interface structure connected to the display unit housing and constructed and arranged to engage a user's face in use; and

[0144] a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0145] a loop portion, the loop portion forming an upper transverse strap portion, the upper transverse strap portion being constructed and arranged to engage an upper region of the user's head, the upper region being located at or near a coronal plane aligned with each supra-auricular base point of the user's head, the loop portion further forming an occipital strap portion, the occipital strap portion being constructed and arranged to engage a region of the parietal bone of the user's head that covers the occipital bone or covers the parietal bone near the occipital bone;

[0146] a pair of lateral strap portions connected to the annular strap portion and constructed and arranged to be connected to respective lateral sides of the head mounted display unit;

[0147] The head-mounted display unit includes a weight, and the ring belt portion supports at least a major part of the weight via the lateral belt portion.

[0148] Another aspect of the present technology relates to a positioning and stabilizing structure for a head-mounted display system, the head-mounted display system comprising a head-mounted display unit, the head-mounted display unit comprising a display unit housing containing a display, the head-mounted display unit further comprising an interface structure connected to the display unit housing and constructed and arranged to engage a user's face during use, the positioning and stabilizing structure constructed and arranged to maintain the head-mounted display unit in an operable position on the user's head during use. The positioning and stabilizing structure comprises:

[0149] a loop portion, the loop portion forming an upper transverse strap portion, the upper transverse strap portion being constructed and arranged to engage an upper region of the user's head, the upper region being located at or near a coronal plane aligned with each supra-auricular base point of the user's head, the loop portion further forming an occipital strap portion, the occipital strap portion being constructed and arranged to engage a region of the parietal bone of the user's head that covers the occipital bone or covers the parietal bone near the occipital bone;

[0150] a pair of lateral strap portions connected to the annular strap portion and constructed and arranged to be connected to respective lateral sides of the head mounted display unit;

[0151] The head-mounted display unit includes a weight, and the ring belt portion supports at least a major part of the weight via the lateral belt portion.

[0152] In the examples:

[0153] each of the lateral strap portions extending at least partially upwardly away from its respective connection to the head mounted display unit;

[0154] The loop portion is configured to substantially maintain a shape in use when the head mounted display device is not worn by a user;

[0155] the positioning and stabilizing structure being configured to resist a change in angle between the upper transverse strap portion and the occipital strap portion when the lateral strap portion is tensioned;

[0156] The width of the occipital girdle portion measured transversely to the length of the occipital girdle portion is greater than the width of the upper transverse girdle portion measured transversely to the length of the upper transverse girdle portion;

[0157] The thickness of the annular belt portion is greater than the thickness of the lateral belt portion;

[0158] The thickness of the annular belt portion is greater than the thickness of the top belt portion;

[0159] The annular belt portion includes a plurality of segments that are formed separately and connected together to form the annular belt portion;

[0160] The segments include an upper segment, paired lateral segments, and a lower segment;

[0161] The annular band portion includes at least a pair of hinges, each hinge being located near one of the connection locations between the annular band portion and a corresponding one of the lateral band portions;

[0162] The length of each of the lateral strap portions is selectively adjustable;

[0163] Each of the lateral strap portions passes through a corresponding eyelet on the head mounted display unit, loops back, and secures to itself;

[0164] Each of the lateral strap portions is secured to itself by a hook and loop connection;

[0165] The head mounted display unit includes a pair of arms extending rearwardly from corresponding lateral sides of the display unit housing, the lateral strap portions each being attached to a corresponding one of the arms;

[0166] the arm being pivotally attached to the display unit housing;

[0167] the lateral strap portions being connected to the annular strap portion at respective locations spaced upwardly from the arms;

[0168] the occipital strap portion being constructed and arranged to lie at or near the Frankfort plane of the user's head when in use;

[0169] The positioning and stabilizing structure further includes a top strap portion connected to the upper lateral strap portion or the occipital strap portion and constructed and arranged to be connected to the head mounted display unit;

[0170] The top strap portion is connected to the head mounted display unit at a single location;

[0171] The length of the top strap portion is selectively adjustable;

[0172] The top strap passes through the eyelets on the head-mounted display unit, loops back and fastens to itself;

[0173] The top strap portion is secured to itself via a hook-and-loop connection;

[0174] In use, the cuff is wider in the upper transverse band portion at a location intersecting a sagittal plane of the user's head than at other locations around the cuff;

[0175] the upper transverse strap portion comprising a greater width at a location intersecting the sagittal plane than at lateral portions of the upper transverse strap portion;

[0176] The upper transverse strip portion includes a front edge and a rear edge, the front edge being more curved than the rear edge to form a greater width; and / or

[0177] The front edge bends forward from the outside to the inside, and the rear edge does not substantially bend forward or rearward.

[0178] Another aspect of the present technology relates to a head-mounted display system comprising:

[0179] A head-mounted display unit, comprising:

[0180] a display unit housing including a display; and

[0181] an interface structure connected to the display unit housing and constructed and arranged to engage a user's face in use; and

[0182] a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0183] a strap portion constructed and arranged to, in use, encircle the user's head and engage an area of ​​the user's head covering the frontal bone and an area of ​​the user's head covering or underlying the occipital bone;

[0184] an adjustment mechanism constructed and arranged to allow the user to selectively adjust the length of the strap portion; and

[0185] A pair of lateral strap portions are connected to the strap portion at respective lateral sides of the user's head during use and are constructed and arranged to be connected to respective lateral sides of the head mounted display unit.

[0186] In the examples:

[0187] The adjustment mechanism includes a dial adjustment mechanism, wherein the dial adjustment mechanism includes a dial, and the dial adjusts the length of the strap portion when rotated;

[0188] The dial is provided to the strap portion in an area of ​​the user's head located above or below the occipital bone;

[0189] In use, the dial is aligned with the sagittal plane of the user's head;

[0190] The strap portion is at least partially rigidified at an area of ​​the user's head covering or underlying the occipital bone;

[0191] at least partial rigidification of the entire strap portion;

[0192] The positioning and stabilizing structure further includes a top strap portion connected to the strap portion near the user's forehead and constructed and arranged to be connected to the head mounted display unit;

[0193] The length of the top strap portion is selectively adjustable;

[0194] The top strap passes through the eyelets and loops on the head-mounted display unit and is fixed to itself;

[0195] The top strap portion is secured to itself via a hook-and-loop connection;

[0196] The positioning and stabilizing structure includes a forehead pad attached to the strap portion and constructed and arranged to engage a user's forehead;

[0197] The head mounted display unit includes a pair of arms provided on respective lateral sides of the head mounted display unit, and the lateral strap portions are attached to the arms;

[0198] The arm is pivotally attachable to the head mounted display unit;

[0199] The length of each of the lateral strap portions is selectively adjustable;

[0200] Each of the lateral strap portions is passed through a corresponding eyelet provided on a corresponding arm, looped back, and secured to itself;

[0201] Each of the lateral strap portions is secured to itself by a hook and loop connection;

[0202] The positioning and stabilizing structure further includes a parietal strap portion constructed and arranged to engage the region of the user's head covering the parietal bone;

[0203] The parietal strap portion is connected to the strap portion adjacent the lateral strap portion; and / or

[0204] The top belt portion is elastically stretchable.

[0205] Another aspect of the present technology relates to a head-mounted display system comprising:

[0206] A head-mounted display unit, comprising:

[0207] a display unit housing including a display; and

[0208] an interface structure connected to the display unit housing and constructed and arranged to engage the user's face in use; and

[0209] a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0210] a strap portion constructed and arranged to, in use, encircle the user's head, engage an area of ​​the user's head overlying the frontal bone, and form an occipital strap portion constructed and arranged to engage an area of ​​the user's head overlying or underlying the occipital bone;

[0211] The head mounted display unit is pivotally attached to the strap portion at a pair of pivot connections so that the head mounted display unit can pivot relative to the strap portion around an axis aligned perpendicular to a sagittal plane of the user's head.

[0212] In the examples:

[0213] The pivot connection is located adjacent the mid-coronal plane of the user's head in use;

[0214] the strap portion including a pair of slots within which the pivot connection is located and which permit movement of the pivot connection relative to the strap portion along the length of the slots;

[0215] The pivot connection enables the head mounted display unit to move at least partially forward during pivoting;

[0216] The head-mounted display unit is configured to pivot between a viewing position in which the head-mounted display unit is positioned above the user's eyes and a non-viewing position in which the head-mounted display unit is positioned above the user's forehead bone;

[0217] the slot being configured to cause the pivot connection to at least partially move forward when the head mounted display is pivoted from the viewing position to the non-viewing position;

[0218] The positioning and stabilising structure comprises a parietal strap portion configured to engage the user's head at a region covering the parietal bone of the user's head in use;

[0219] The parietal strap portion is connected to the strap portion;

[0220] the parietal strap portion being connected to the strap portion at a location spaced forwardly from the pivot connection;

[0221] The parietal strap portion includes a pair of elastically extendable side portions proximal to the strap portion and a rear portion extending less than the elastically extendable side portions;

[0222] The head-mounted display system further includes a battery pack for powering the head-mounted display system;

[0223] the battery pack being attached to the occipital strap;

[0224] The length of the strap portion is adjustable;

[0225] the strap portion including a dial adjustment mechanism including a rotatable dial, the dial adjustment mechanism being configured to cause a change in the length of the strap portion when the dial is rotated;

[0226] The dial adjustment mechanism is disposed in the occipital strap portion of the strap portion;

[0227] The dial is positioned in use in a sagittal plane of the user's head;

[0228] The head mounted display system includes a pair of battery packs mounted to the occipital strap, each of the battery packs being located on a respective side of the dial;

[0229] The strap portion includes an outer layer formed of a fabric material;

[0230] The strap portion includes a rigid member;

[0231] The strap portion includes a fabric sleeve, and the rigidizer is within the fabric sleeve;

[0232] The positioning and stabilizing structure includes a forehead pad attached to the strap portion and configured to engage the user's forehead;

[0233] The forehead pad comprises a fabric material;

[0234] The interface structure includes a foam laminate material;

[0235] The foam laminate is thermoformed;

[0236] The interface structure includes a nasal ridge support portion configured to engage a user's nasal ridge during use;

[0237] The interface structure includes a breathable textile surface;

[0238] The interface structure includes a 3D fabric;

[0239] The interface structure is formed of silicone and foam; and / or

[0240] The interface structure is formed of silicone resin.

[0241] Another aspect of the present technology relates to a head-mounted display system comprising:

[0242] A head-mounted display unit, comprising:

[0243] a display unit housing including a display; and

[0244] an interface structure connected to the display unit housing and constructed and arranged to engage the user's face in use; and

[0245] a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0246] a pair of lateral strap portions constructed and arranged to be connected to respective lateral sides of the head mounted display unit and to be connected to each other behind the user's head to form a strap portion that partially surrounds the user's head in use; and

[0247] An occipital strap portion is connected to the strap portion or the head-mounted display unit and is constructed and arranged to engage an area of ​​the user's head covering the occipital bone.

[0248] Another aspect of the present technology relates to a positioning and stabilizing structure for a head-mounted display system, the head-mounted display system comprising a head-mounted display unit, the head-mounted display unit comprising a display unit housing containing a display, the head-mounted display unit further comprising an interface structure connected to the display unit housing and constructed and arranged to engage a user's face during use, the positioning and stabilizing structure constructed and arranged to maintain the head-mounted display unit in an operable position on the user's head during use. The positioning and stabilizing structure comprises:

[0249] a pair of lateral strap portions constructed and arranged to be connected to respective lateral sides of the head mounted display unit and to be connected to each other behind the user's head to form a strap portion that partially surrounds the user's head in use; and

[0250] An occipital strap portion is connected to the strap portion or is configured to be connected to the head-mounted display unit and is constructed and arranged to engage an area of ​​the user's head covering the occipital bone.

[0251] In the examples:

[0252] The positioning and stabilizing structure further includes an adjustment mechanism constructed and arranged to allow a user to selectively adjust the length of the strap portion;

[0253] The adjustment mechanism includes a dial adjustment mechanism, wherein the dial adjustment mechanism includes a dial, and the dial adjusts the length of the strap portion when rotated;

[0254] The dial is positioned in use in a sagittal plane of the user's head;

[0255] In use, the strap portion engages an area of ​​the user's head covering the parietal bone;

[0256] The strap portion is at least partially rigidified at a region of the user's head covering the parietal bone;

[0257] at least partial rigidification of the entire strap portion;

[0258] In use, each of the lateral strap portions is located in a path extending rearwardly and partially upwardly from the head mounted display unit to a rear region of the user's head;

[0259] The lateral strap portions are constructed and arranged to be attached to a pair of arms disposed on respective lateral sides of the head mounted display unit;

[0260] the arm being constructed and arranged to be pivotally attached to the head mounted display unit;

[0261] the lateral strap portions being constructed and arranged to attach to an interface structure of the head mounted display unit;

[0262] the lateral strap portions being constructed and arranged to attach to a display unit housing of the head mounted display unit;

[0263] The head mounted display unit includes a pair of side shields extending rearwardly from respective sides of the head mounted display unit through side portions of the interface structure;

[0264] Each of the side shields extends rearwardly to a position proximate a corresponding supra-ear base point of the user's head;

[0265] the occipital strap portion being constructed and arranged to be attached to the side shield;

[0266] the occipital strap portion being attached to the strap portion;

[0267] The occipital strap portion is attached to the strap portion near the head mounted display unit;

[0268] The occipital girdle is semirigid;

[0269] The occipital girdle comprises a fabric sleeve and at least one rigid member within the fabric sleeve;

[0270] The length of the fabric sleeve is elastically extendable to allow the size of the occipital band to be adjusted;

[0271] The fabric sleeve may include a knitted tube;

[0272] the occipital strap portion includes a pair of rigid members, each rigid member constructed and arranged to be connected to the head mounted display unit and to extend rearwardly away from the head mounted display unit, each rigid member including a rear end, the rear ends of the rigid members being laterally spaced apart from each other adjacent a rear surface of the user's head;

[0273] Each rigid member extends rearwardly and curves medially to follow the curvature of the rear surface of the user's head;

[0274] Each rigid member extends rearwardly and curves downwardly and inwardly to follow the curvature of the rear surface of the user's head;

[0275] The fabric sleeve is constrained by the rigid members to lie on a curved path defined by the curvature in each rigid member, the fabric sleeve being elastically extendable over and along a length of the rigid members;

[0276] The positioning and stabilizing structure further includes a top strap portion constructed and arranged to be connected between the strap portion and the head mounted display unit;

[0277] The top strap portion is aligned with the sagittal plane of the user's head;

[0278] The top strap is constructed and arranged to pass through the eyelets, loops and be secured to itself on the head mounted display unit; and / or

[0279] The top strap portion is constructed and arranged to be secured to itself by a hook and loop connection.

[0280] Another aspect of the present technology relates to a head-mounted display system comprising:

[0281] A head-mounted display unit, comprising:

[0282] a display unit housing including a display; and

[0283] an interface structure connected to the display unit housing and constructed and arranged to engage a user's face in use; and

[0284] a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0285] a pair of lateral strap portions constructed and arranged to be connected to respective sides of the head mounted display unit and to be connected to each other at a rear position of the user's head to form a first strap portion that partially surrounds the user's head;

[0286] A second strap portion encircles the user's head, the second strap portion being connected to the first strap portion at a rear region and constructed and arranged to engage the user's head at the rear region and at a forehead region of the user's head.

[0287] In the examples:

[0288] The positioning and stabilizing structure includes an adjustment mechanism constructed and arranged to allow a user to selectively and simultaneously adjust the length of the first strap portion and the length of the second strap portion;

[0289] The adjustment mechanism includes a dial adjustment mechanism, wherein the dial adjustment mechanism includes a dial, and the dial adjusts the length of the first strap portion and the second strap portion when rotated;

[0290] positioning the dial in a sagittal plane of the user's head during use;

[0291] The positioning and stabilizing structure includes a first adjustment mechanism constructed and arranged to allow a user to selectively adjust the length of the first strap portion;

[0292] The first adjustment mechanism includes a first dial adjustment mechanism, the first dial adjustment mechanism including a first dial, the first dial adjusting the length of the first strap portion when rotated;

[0293] The positioning and stabilizing structure includes a second adjustment mechanism constructed and arranged to allow a user to selectively adjust the length of the second strap portion;

[0294] The second adjustment mechanism includes a second dial adjustment mechanism, the second dial adjustment mechanism including a second dial, the second dial adjusting the length of the second strap portion when rotated;

[0295] In use, the lateral strap portions are located in a path extending rearwardly and partially downwardly from the head mounted display unit toward a rear position of the user's head;

[0296] The head mounted display unit includes a pair of arms provided to the head mounted display unit and the lateral strap portions are constructed and arranged to be attached to the arms;

[0297] The arm is pivotally attachable to the head mounted display unit;

[0298] The positioning and stabilizing structure further includes a top strap portion connected between the second strap portion and the head mounted display unit;

[0299] aligning the top strap portion with the sagittal plane of the user's head;

[0300] The top strap passes through the eyelets, loops and is secured to the head mounted display unit; and / or

[0301] The top strap portion is secured to itself by a hook and loop connection.

[0302] Another aspect of the present technology relates to a head-mounted display system comprising:

[0303] A head-mounted display unit, comprising:

[0304] a display unit housing including a display; and

[0305] an interface structure connected to the display unit housing and constructed and arranged to engage a user's face in use; and

[0306] a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0307] a first strap portion constructed and arranged to connect to respective sides of the head mounted display unit, partially surround the user's head, and engage a rear region of the user's head;

[0308] a second strap portion constructed and arranged to surround a portion of the user's head and engage a posterior region of the user's head and an upper region of the user's head, the upper region being at or near a coronal plane aligned with each supra-auricular base point of the user's head;

[0309] wherein the first strap portion is formed of a plurality of lateral strap portions that, in use, are connected to corresponding lateral sides of the head mounted display unit and positioned on corresponding lateral sides of the user's head, and the first strap portion is further formed of a rear strap portion that is connected to the lateral strap portions and is constructed and arranged to engage a rear region of the user's head in use;

[0310] wherein the second strap portion is formed by the rear strap portion and an upper transverse strap portion, the upper transverse strap portion being connected to the rear strap portion and being constructed and arranged to engage the user's head at or near the coronal plane, the coronal plane being aligned with each of the post-ear bases.

[0311] In the examples:

[0312] The second strap portion is wider at an upper region of the user's head than at a rear region;

[0313] the lateral strap portions and the rear strap portion being integrally formed with one another, and the upper lateral strap portion including ends attached to the first strap portion at rear regions on respective lateral sides of a user's head and extending forwardly from above the first strap portion;

[0314] the upper lateral strap portion and the rear strap portion being integrally formed, and the lateral strap portions each being attached to the second strap portion proximate a rear region of the user's head on a respective lateral side of the user's head and extending forwardly from the second strap portion;

[0315] In use, the lateral strap portions are located in a path extending rearwardly and partially downwardly from the head mounted display unit towards a rear region of the user's head;

[0316] The length of each of the lateral strap portions is selectively adjustable;

[0317] Each of the lateral strap portions passes through a corresponding eyelet on the head mounted display unit, loops back, and secures to itself;

[0318] Each of the lateral strap portions is secured to itself by a hook and loop connection;

[0319] The head mounted display unit includes a pair of arms disposed on respective lateral sides of the head mounted display unit, and the lateral strap portions are constructed and arranged to attach to the arms;

[0320] The arm is pivotally attachable to the head mounted display unit;

[0321] The positioning and stabilizing structure further includes a top strap portion connected between the second strap portion and the head mounted display unit;

[0322] The top strap portion is aligned with the sagittal plane of the user's head;

[0323] The top strap passes through the eyelets, loops and is secured to the head mounted display unit; and / or

[0324] The top strap portion is secured to itself by a hook and loop connection.

[0325] Another aspect of the present technology relates to a head-mounted display system comprising:

[0326] A head-mounted display unit, comprising:

[0327] a display unit housing including a display; and

[0328] an interface structure connected to the display unit housing and constructed and arranged to engage a user's face in use; and

[0329] a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0330] a strap portion constructed and arranged to surround a portion of the user's head, the strap portion being formed by a rear strap portion constructed and arranged to engage a rear region of the user's head and an upper lateral strap portion constructed and arranged to engage an upper region of the user's head, the upper region being at or near a coronal plane aligned with each of the post-auricular base points of the user's head;

[0331] A pair of lateral strap portions are connected between the strap portion and the corresponding lateral sides of the head-mounted display unit, the lateral strap portions being located on a path extending rearward from the head-mounted display unit during use and being bent upward to connect to the strap portion at or near the upper transverse strap portion, the lateral strap portions being rigid.

[0332] In the examples:

[0333] The upper transverse belt portion and the rear strap portion are formed integrally;

[0334] The rear strap portion is constructed and arranged to cover the occipital bone of the user's head during use;

[0335] The length of the strap portion is selectively adjustable;

[0336] The strap portion comprises a pair of ends connected to each other in use, one end of the pair of ends comprising an eyelet and the other end of the pair of ends passing through the eyelet, looped and secured to itself;

[0337] The positioning and stabilizing structure includes a counterweight attached to the rear belt portion;

[0338] The head mounted display unit includes a pair of arms disposed on respective lateral sides of the head mounted display unit, and the lateral strap portions are constructed and arranged to attach to the arms;

[0339] The arm is pivotally attachable to the head mounted display unit;

[0340] The positioning and stabilizing structure further includes a top strap portion connected between the upper lateral strap portion and the head mounted display unit;

[0341] The top strap portion is aligned with the sagittal plane of the user's head;

[0342] The top strap is passed through the eyelets and loops on the head mounted display unit and fastened to itself; and / or

[0343] The top strap portion is secured to itself by a hook and loop connection.

[0344] Another aspect of the present technology relates to a head-mounted display system comprising:

[0345] A head-mounted display unit, comprising:

[0346] a display unit housing including a display; and

[0347] an interface structure connected to the display unit housing and constructed and arranged to engage a user's face in use; and

[0348] a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0349] an upper transverse strap portion constructed and arranged to engage an upper portion of the user's head in use;

[0350] an occipital strap portion constructed and arranged to engage, in use, an area of ​​a user's head covering the occipital bone;

[0351] a pair of lateral strap portions, each of the lateral strap portions being connected to respective junctions of the upper lateral strap portion and the occipital strap portion, and each of the lateral strap portions being constructed and arranged to be connected to a respective side of the head mounted display unit;

[0352] Each of the lateral strap portions is rigidified.

[0353] Another aspect of the present technology relates to a positioning and stabilizing structure for a head-mounted display system, the head-mounted display system comprising a head-mounted display unit, the head-mounted display unit comprising a display unit housing containing a display, the head-mounted display unit further comprising an interface structure connected to the display unit housing and constructed and arranged to engage a user's face during use, the positioning and stabilizing structure constructed and arranged to maintain the head-mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0354] an upper transverse strap portion constructed and arranged to engage an upper portion of the user's head in use;

[0355] an occipital strap portion constructed and arranged to engage, in use, an area of ​​a user's head covering the occipital bone;

[0356] a pair of lateral strap portions, each of the lateral strap portions connected to respective junctions of the upper lateral strap portion and the occipital strap portion, and each of the lateral strap portions constructed and arranged to be connected to a respective lateral side of the head mounted display unit;

[0357] Each of the lateral strap portions is rigidified.

[0358] In the examples:

[0359] The upper transverse strap portion is substantially aligned with a coronal plane of the user's head in use, the coronal plane being aligned with each supra-auricular base point of the user's head;

[0360] The upper transverse strap is wider in the sagittal plane of the user's head than near its connection with the occipital strap;

[0361] The lateral belt portions and the upper transverse belt portion are integrally formed;

[0362] The upper transverse strap portions adjacent to the corresponding lateral strap portions are rigidified;

[0363] The upper transverse band is rigidified along its entire length;

[0364] The positioning and stabilizing structure comprises a single rigid member extending from one lateral strap portion, through the upper transverse strap portion and into the other lateral strap portion;

[0365] Rigidization of the portion of the occipital girdle proximal to the corresponding lateral girdle;

[0366] the single rigid member including rearwardly projecting portions extending into respective ends of the occipital girdle;

[0367] the occipital strap portion including an occipital strap connector at one end of the occipital strap portion, the occipital strap connector being constructed and arranged to releasably connect to the occipital strap connector at or near one of the junctions of the occipital strap portion and the upper lateral strap portion;

[0368] the occipital strap connector being constructed and arranged to magnetically attach to the occipital strap connection;

[0369] The length of the occipital girdle is selectively adjustable;

[0370] The occipital strap portion passes through the eyelets and loops on the occipital strap connector and is fastened to itself;

[0371] The occipital strap is secured to itself via a hook-and-loop connection;

[0372] Each of the lateral strap portions includes an upper lateral strap connection portion connected to the upper lateral strap portion and an occipital strap connection portion connected to the occipital strap portion;

[0373] The length of each of the upper transverse strap portion and the occipital strap portion can be selectively adjusted simultaneously;

[0374] The length of each of the lateral strap portions is selectively adjustable;

[0375] Each of the lateral strap portions passes through a corresponding eyelet on the head mounted display unit, loops back, and secures to itself;

[0376] Each of the lateral strap portions is secured to itself by a hook and loop connection;

[0377] said lateral strap portions each constructed and arranged to attach to a respective one of a pair of arms extending rearwardly from a respective lateral side of said display unit housing;

[0378] the arm being constructed and arranged to be pivotally attached to the display unit housing;

[0379] The positioning and stabilizing structure further includes a top strap portion connected to the upper lateral strap portion and constructed and arranged to be connected to the head mounted display unit;

[0380] The length of the top strap portion is selectively adjustable;

[0381] The top strap portion is constructed and arranged to connect to the head mounted display unit at a single location;

[0382] The top strap is constructed and arranged to pass through the eyelets, loops and be secured to itself on the head mounted display unit; and / or

[0383] The top strap portion is constructed and arranged to be secured to itself by a hook and loop connection.

[0384] Another aspect of the present technology relates to a head-mounted display system comprising:

[0385] A head-mounted display unit, comprising:

[0386] a display unit housing including a display; and

[0387] an interface structure connected to the display unit housing and constructed and arranged to engage a user's face in use; and

[0388] a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head during use, the positioning and stabilizing structure comprising:

[0389] a first strap portion constructed and arranged to connect to respective sides of the head mounted display unit, partially surround the user's head, and engage a rear region of the user's head in use;

[0390] A second strap portion is constructed and arranged to be connected to a respective side of the head mounted display unit and to engage an upper region of the user's head in use.

[0391] In the examples:

[0392] The second strap portion is wider at an upper region of the user's head than at a rear region;

[0393] the first strap portion including a semi-rigid portion constructed and arranged to engage a rear region of a user's head in use;

[0394] The first strap portion is wider at a rear region of the user's head than at a side region of the user's head;

[0395] the second strap portion being located on a path extending rearward from each side of the head mounted display unit and curving upward to form an upper lateral strap portion constructed and arranged to engage the upward region of the user's head;

[0396] the second strap portion including a pair of substantially rigid sections at corresponding connections between the second strap portion and the lateral sides of the head mounted display unit;

[0397] the substantially rigid portion extending rearwardly from each lateral side of the head mounted display unit and curving upwardly;

[0398] The length of the first strap portion is selectively adjustable;

[0399] The length of the second strap portion is selectively adjustable;

[0400] The head mounted display unit includes a pair of arms extending rearwardly from respective lateral sides of the display unit housing;

[0401] the first strap portion being attached to the arm and the second strap portion being connected to the first strap portion adjacent the arm;

[0402] the second strap portion being attached to the arm and the first strap portion being connected to the second strap portion adjacent the arm;

[0403] the arm being pivotally attached to the display unit housing;

[0404] The positioning and stabilizing structure further includes a top strap portion connected to the second strap portion and constructed and arranged to be connected to the head mounted display unit;

[0405] The length of the top strap portion is selectively adjustable;

[0406] The top strap portion is connected to the head mounted display unit at a single location;

[0407] The top strap passes through the eyelets, loops and is secured to the head mounted display unit; and / or

[0408] The top strap portion is secured to itself by a hook and loop connection.

[0409] In any instance of the above aspects:

[0410] The interface structure includes a cushion and a face engaging flange, the face engaging flange being constructed and arranged to be disposed around a periphery of an eye region of a user's face and configured to engage the user's face during use, the face engaging flange being flexible and resilient, the face engaging flange at least partially covering the cushion; and / or

[0411] The interface structure includes: a pair of cheek portions, which are configured to engage the cheeks of a user during use; a forehead portion, which is configured to engage the forehead of a user during use; and a pair of sphenoid portions, which are located on respective lateral sides of the interface structure, the interface structure being connected between the forehead portion and the cheek portions and configured to engage the user's head near the sphenoid bones.

[0412] Another form of the present technology includes a head-mounted display system for a person, the head-mounted display system comprising:

[0413] a head-mounted display unit including a display;

[0414] a control system for operating the head mounted display system; and

[0415] A positioning and stabilising structure configured to hold the head mounted display unit in front of the user's eyes so that the display is viewable by the user during use. The positioning and stabilising structure may be any of the above.

[0416] The head-mounted display system can be helmet-mounted and can be configured for virtual reality display, augmented reality display, or mixed reality display.

[0417] In some examples: a) the head-mounted display device also includes a light shading shield; b) the light shading shield is constructed and arranged to substantially block the reception of ambient light on the eye area of ​​the person when in use; c) the light shading shield is configured as a virtual reality display; d) the head-mounted display system includes an interface structure, which is constructed and arranged to contact the eye area of ​​the person's face when in use; e) the interface structure is constructed of foam, silicone and / or gel; f) the interface structure is constructed of a light absorbing material; and / or g) the interface structure is configured to function as a light shield.

[0418] In some examples: a) the head mounted display device further includes a sound system; b) a left ear transducer; and / or c) a right ear transducer.

[0419] In some examples: a) the head-mounted display unit includes a binocular display unit; and / or b) the positioning and stabilizing structure is configured to maintain the binocular display unit in an operative position during use.

[0420] In some examples: a) the control system includes a visual display controller and at least one battery; b) the at least one battery includes a first battery and a second battery; c) the first battery is a low power system battery configured to power an RT clock; d) the second battery is a main battery; e) a battery support configured to hold the battery; f) the battery support is connected to the positioning and stabilizing structure using a tether; g) an orientation sensor configured to sense the orientation of the person's head during use; and / or h) a control support system.

[0421] In some examples: a) the positioning and stabilizing structure includes a front support portion configured to contact an area covering a frontal bone of a person's head; and / or (b) the positioning and stabilizing structure includes a length adjustment mechanism for adjusting the length of a portion of the positioning and stabilizing structure.

[0422] Another aspect of one form of the present technology is a positioning and stabilizing structure configured to have a shape complementary to the shape of an intended wearer.

[0423] Another aspect of one form of the present technology is an interface structure configured to have a shape complementary to the shape of an intended wearer.

[0424] One aspect of one form of the present technology is a method of making a device.

[0425] One aspect of some forms of the present technology is a positioning and stabilization structure that is easy to use, for example, by people with limited dexterity, vision, or by people with limited experience in using head-mounted displays.

[0426] One aspect of some forms of the present technology is an interface structure that is easy to use, for example, by people with limited dexterity, vision, or by people with limited experience in using head-mounted displays.

[0427] The described methods, systems, apparatuses, and devices may be implemented to improve the functionality of head-mounted displays, such as electronic displays or computers. Additionally, the described methods, systems, apparatuses, and devices may provide improvements in the fields of virtual reality, augmented reality, and / or mixed reality.

[0428] Of course, parts of the aspects may form sub-aspects of the present technology. In addition, various aspects and / or aspects may be combined in various ways and also constitute additional aspects or sub-aspects of the present technology.

[0429] Other features of the technology will be apparent from consideration of the information contained in the following detailed description, abstract, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0430] The present technology is illustrated by way of example and not limitation in the accompanying figures, in which like reference numerals refer to similar elements, including:

[0431] 4.1 Head-mounted display system

[0432] Figure 1A A system is shown including a user 100 wearing a head mounted display system 1000, which takes the form of a face mounted virtual reality (VR) headset that displays various images to the user 100. The user stands while wearing the head mounted display system 1000.

[0433] Figure 1B The system includes a user 100 wearing a head mounted display system 1000 in the form of a floating virtual reality (VR) headset, which displays various images to the user. The user is seated while wearing the display interface 100.

[0434] Figure 1C The system includes a user 100 wearing a head mounted display system 1000 in the form of a floating augmented reality (AR) headset that displays various images to the user. The user stands while wearing the head mounted display system 1000.

[0435] 4.2 Display System and Facial Anatomy

[0436] Figure 2A Shown is a view of the human upper airway, including the nasal cavity, nasal bones, lateral nasal cartilages, greater alar cartilages, nostrils, superior and inferior labia, larynx, hard palate, soft palate, oropharynx, tongue, epiglottis, vocal folds, esophagus, and trachea.

[0437] Figure 2B is a front view of a face with several features of surface anatomy identified, including the upper lip, upper lip vermilion, lower lip vermilion, lower lip, mouth width, inner canthus, nasal ala, nasolabial fold, and lip margin. The directions of superior, inferior, radially inward, and radially outward are also indicated.

[0438] Figure 2C is a side view of the head with several features of surface anatomy identified, including the glabella, nasal bridge, nasal protrusion, nasal septum, supralabial, sublabial, supramental, nasal ridge, pterygoid, supraauricular, and subauricular. The superior, inferior, and anterior, posterior directions are also indicated.

[0439] Figure 2D This is another lateral view of the head. The approximate locations of the Frankfurt plane and nasolabial angle are shown. The coronal plane is also shown.

[0440] Figure 2E A basic view of the nose is shown with several features including the nasolabial folds, lower lip, upper lip vermilion, nostrils, inferior septum, columella, anterior septum, long axis of the nostrils, and the mid-sagittal plane.

[0441] Figure 2F A side view showing the surface features of the nose.

[0442] Figure 2G The subcutaneous structures of the nose are shown, including the lateral cartilage, septal cartilage, greater alar cartilage, lesser alar cartilage, sesamoid cartilage, nasal bones, epidermis, adipose tissue, frontal process of the maxilla, and fibroadipose tissue.

[0443] Figure 2HThe medial dissection of the nose approximately a few millimeters from the midsagittal plane is shown, with the medial crus of the septal cartilage and the greater alar cartilage shown.

[0444] Figure 2I Shown is a frontal view of the skull, including the frontal, nasal, and zygomatic bones. The nasal conchae, maxilla, and mandible are indicated.

[0445] Figure 2J A side view of the skull with the outline of the head surface and several muscles is shown. The following bones are shown: frontal, sphenoid, nose, zygomatic, maxillary, mandibular, parietal, temporal, and occipital bones. Metal protrusions are indicated. The following muscles are shown: digastric, masseter, sternocleidomastoid, and trapezius.

[0446] Figure 2K An anterolateral view of the nose is shown. The following bones are shown: forehead, supraorbital foramen, nose, septal cartilage, lateral cartilage, orbit, and infraorbital foramen.

[0447] Figure 2L Another front view of the face is shown, with several features of surface anatomy identified, including the superior canthus, sphenoid bone, nasal ridge, outer and inner cheek areas, zygomatic arch, and pterygoid ridge.

[0448] Figure 2M Another side view of the face is shown with several features of surface anatomy identified, including the superior canthus, sphenoid bone, nasal ridge, outer and inner cheek areas, zygomatic arch, and pterygoid ridge.

[0449] 4.3 Structural shape

[0450] Figure 3A A schematic cross-section through the structure at a point is shown. The outward normal at the point is indicated. The curvature at the point has a positive sign and when Figure 3B The magnitude of the curvature shown in has a relatively large magnitude compared to .

[0451] Figure 3B A schematic cross-section through the structure at a point is shown. The outward normal at the point is indicated. The curvature at the point has a positive sign and when Figure 3A The magnitude of the curvature shown in has a relatively small magnitude compared to .

[0452] Figure 3C A schematic cross-section through the structure at a point is shown. The outward normal at that point is indicated. The curvature at that point has a value of zero.

[0453] Figure 3D A schematic cross section through the structure at a point is shown. The outward normal at the point is indicated. The curvature at the point has a negative sign and when Figure 3E The magnitude of the curvature shown in has a relatively small magnitude compared to .

[0454] Figure 3E A schematic cross section through the structure at a point is shown. The outward normal at the point is indicated. The curvature at the point has a negative sign and when Figure 3D The magnitude of the curvature shown in has a relatively large magnitude compared to .

[0455] Figure 3F The surface of a structure is shown with a one-dimensional hole in the surface. The plane curve shown forms the boundary of the one-dimensional hole.

[0456] Figure 3G Shown through Figure 3F The surface shown defines the cross section of the structure. Figure 3F A two-dimensional hole in a structure.

[0457] Figure 3H Shown Figure 3F A perspective view of the structure of , including two-dimensional holes and one-dimensional holes. Also shown is the Figure 3F The surface of the two-dimensional hole is defined in the structure.

[0458] Figures 3I-3J The seal-forming structure is shown. The outer surface of the liner is shown. The edge of the surface is shown. The path on the surface between points A and B is shown. represents the straight-line distance between A and B. two saddle-shaped areas and the dome area are shown.

[0459] Figure 3K Show the left-hand rule.

[0460] Figure 3L Show the right-hand rule.

[0461] Figure 3M The left ear is shown, including the left helix.

[0462] Figure 3N The right ear is shown, including the right helix.

[0463] Figure 3O A right-handed helix is ​​shown.

[0464] 4.4 Head-mounted Virtual Reality Display

[0465] Figure 4A Shown is a front perspective view of a head-mounted display interface in accordance with one form of the present technology.

[0466] Figure 4B Shown Figure 4A A rear perspective view of the head-mounted display.

[0467] Figure 4C Shown with Figure 4A A perspective view of a positioning and stabilization structure used in conjunction with a head-mounted display.

[0468] Figure 4D A front view of a user's face is shown, illustrating the position of the interface structure in use.

[0469] 4.5 Head-mounted augmented reality display

[0470] Figure 5A Shown is a front perspective view of a head-mounted display interface in accordance with one form of the present technology.

[0471] Figure 5B Shown Figure 5A A side view of the head-mounted display interface.

[0472] 4.6 Control device

[0473] Figure 6 A schematic diagram showing a control system of one form of the present technology.

[0474] 4.7 Positioning and stabilizing the structure

[0475] Figure 7A is a posterolateral perspective view of a positioning and stabilizing structure in accordance with an example of the present technology.

[0476] Figure 7B is worn by the user including Figure 7A A side view of the positioning and stabilization structure of a head-mounted display system.

[0477] Figure 8A is a front side view of a positioning and stabilizing structure according to another example of the present technology.

[0478] Figure 8B is worn by the user including Figure 8A A side view of the positioning and stabilization structure of a head-mounted display system.

[0479] Figure 8C is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0480] Figure 8D is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0481] Figure 8E is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0482] Figure 8F is a posterolateral perspective view of a positioning and stabilizing structure according to another example of the present technology.

[0483] Figure 8F-1It is along Figure 8F Cross-sectional view along line 8F-1-8F-1.

[0484] Figure 8G yes Figure 8F Side view of the positioning and stabilization structure.

[0485] Figure 8H yes Figure 8F Rear view of the positioning and stabilization structure.

[0486] Figure 8I yes Figure 8F A plan view of the positioning and stabilizing structure in a partially assembled state.

[0487] Figure 8J yes Figure 8F Detailed view of the joints that position and stabilize the structure.

[0488] Figure 8K is a cross-sectional view of a strap portion of a positioning and stabilizing structure according to another example of the present technology.

[0489] Figure 8L is a cross-sectional view of a strap portion of a positioning and stabilizing structure according to another example of the present technology.

[0490] Figure 8M is a perspective view of an arm of a head-mounted display system according to another example of the present technology.

[0491] Figure 9 is a rear side view of a positioning and stabilizing structure according to another example of the present technology.

[0492] Figure 10A is a side view of a head-mounted display system including a positioning and stabilization structure according to another example of the present technology worn by a user.

[0493] Figure 10B is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0494] Figure 10B-1 yes Figure 10B Enlarged detail of .

[0495] Figure 11A is a side view of a head-mounted display system in a viewing position, including a positioning and stabilization structure according to another example of the present technology worn by a user.

[0496] Figure 11A-1 is a side view of a head mounted display system in a non-viewing position, including Figure 11A Positioning and stabilization of the structure of the example.

[0497] Figure 11B is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0498] Figure 12A is a side view of a head-mounted display system including a positioning and stabilization structure according to another example of the present technology worn by a user.

[0499] Figure 12A-1 It is along Figure 12A A cross-sectional view taken along line 12A-1-12A-1 in FIG.

[0500] Figure 12B is a schematic side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0501] Figure 12C yes Figure 12B A schematic plan view of the head-mounted display system shown.

[0502] Figure 12D is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0503] Figure 12E is a perspective view of a head-mounted display system including positioning and stabilization structure according to another example of the present technology.

[0504] Figure 12F is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0505] Figure 12G yes Figure 12F A perspective view of the head-mounted display system shown.

[0506] Figure 12H is a perspective view of a head-mounted display system including positioning and stabilization structure according to another example of the present technology.

[0507] Figure 12I is a perspective view of a head-mounted display system including positioning and stabilization structure according to another example of the present technology.

[0508] Figure 12J is a side view of a head-mounted display system including positioning and stabilization structure according to another example of the present technology.

[0509] Figure 12K is through Figure 12J A schematic cross-sectional view of line 12K-12K is shown.

[0510] Figure 13is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0511] Figure 14 is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0512] Figure 15 is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0513] Figure 16 is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0514] Figure 17 is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0515] Figure 18A is a side view of a head-mounted display system including a positioning and stabilization structure according to another example of the present technology worn by a user.

[0516] Figure 18B is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0517] Figure 19 is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0518] Figure 20A is a side view of a head-mounted display system including a positioning and stabilization structure according to another example of the present technology worn by a user.

[0519] Figure 20B is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0520] Figure 20C is a side view of a head-mounted display system worn by a user including a positioning and stabilization structure according to another example of the present technology.

[0521] Figure 20C-1 is based on Figure 20C Schematic diagram of a portion of the positioning and stabilization structure. DETAILED DESCRIPTION

[0522] Before describing the present technology in more detail, it should be understood that the present technology is not limited to the specific embodiments described herein, which may vary. It should also be understood that the terminology used in this application is only used to describe the specific embodiments discussed herein and is not intended to be limiting.

[0523] The following description is provided for various examples that may share one or more common features and / or characteristics. It should be understood that one or more features of any one example may be combined with one or more features of another example or other examples. In addition, any single feature or combination of features in any example may constitute another example.

[0524] In the following detailed description, reference is made to the accompanying drawings, which form a part of the detailed description. The illustrative embodiments described in the detailed description, depicted in the drawings, and defined in the claims are not intended to be limiting. Other embodiments may be utilized and other changes may be made without departing from the spirit or scope of the subject matter presented. It will be readily understood that the aspects of the present application, as generally described herein and shown in the drawings, may be arranged, substituted, combined, separated, and designed into a variety of different configurations, all of which are contemplated in the present application.

[0525] 5.1 Immersive Technology

[0526] Immersive technologies can present a user with a combination of a virtual environment and the user's physical environment or the real world, allowing the user to interact with the resulting immersive or combined reality.

[0527] The device immerses the user by augmenting or replacing the stimulation associated with one of the user's five senses with a virtual stimulation. Typically, this is a virtual stimulation, although there may be additional stimulation that augments or replaces stimulation associated with one of the additional four senses.

[0528] In some forms, certain immersive technologies can present a user with a combination of a virtual environment and a user environment. At least a portion of the resulting environment can include the virtual environment. In some examples, the entire resulting environment can be a virtual environment (e.g., meaning that the user's environment may be obscured from view or otherwise blocked). In other forms, at least a portion of the user's physical environment can still be visually observed.

[0529] In some forms, users may use different types of immersive technologies, which may include, but are not limited to, virtual reality (VR), augmented reality (AR), or mixed reality (MR). Each type of immersive technology may present a different environment to the user and / or different ways of interacting with the environment.

[0530] In some forms, the display system can be used with each type of immersive technology. The display screen of the display system can provide virtual environment components to the combined environment (i.e., a combination of the virtual environment and the user environment). In some forms, the display screen can be an electronic screen.

[0531] In at least some types of immersive technologies (e.g., VR, AR, MR, etc.), positioning and stabilizing an electronic screen can be useful in operating the corresponding device. For example, a user may want the electronic screen positioned close enough to their eyes to allow for easy viewing, but far enough away so as not to cause discomfort. Additionally, the electronic screen may need to be spaced far enough apart so that the user can simultaneously wear corrective lenses, such as glasses. Furthermore, the user may want to maintain the orientation of the electronic screen relative to their eyes. In other words, a user who walks or otherwise moves while using the device may not want the device to bounce or otherwise move on their head (e.g., particularly relative to their eyes), as this could cause dizziness and / or discomfort to the user. Therefore, to limit relative motion between the user's eyes and the device, the device may be supported snugly on the user's head.

[0532] In one form, the present technology includes a method of using a VR device, the method comprising supporting the device on a user's head, proximate to at least one of the user's eyes, and within the user's line of sight.

[0533] In some examples of the present technology, a head-mounted display unit is supported in front of the user's eyes so as to block, obstruct and / or limit ambient light from reaching the user's eyes.

[0534] Any features disclosed below in the context of a device configured for VR will be understood to be applicable to devices configured for AR, unless the context clearly requires otherwise. Similar features disclosed below in the context of a device configured for AR will be understood to be applicable to devices configured for VR, unless the context clearly requires otherwise. For the avoidance of doubt, features disclosed in the context of devices without transparent displays through which a user can view the real world will be understood to be applicable to devices with such transparent displays, unless the context clearly requires otherwise. Similarly, features disclosed in the context of a device with a transparent display through which the real world can be viewed will be understood to be applicable to devices in which the display is electronic and the real world cannot be directly viewed through the transparent material.

[0535] 5.2 Virtual Reality Display System

[0536] like Figure 4A and 4BAs shown, a display device, display system, display interface, or head-mounted display system 1000 according to one aspect of the present technology includes the following functional aspects: an interface structure 1100, a head-mounted display unit 1200, and a positioning and stabilization structure 1300. In some forms, the functional aspects may be provided by one or more physical components. In some forms, one or more physical components may provide one or more functional aspects. The head-mounted display unit 1200 may include a display. In use, the head-mounted display unit 1200 is arranged to be positioned near and in front of a user's eyes to allow the user to view the display.

[0537] In other aspects, the head-mounted display system 1000 may also include a display unit housing 1205, an optical lens 1240, a controller 1270, a speaker 1272, a power supply 1274, and / or a control system 1276. In some examples, these may be integral pieces of the head-mounted display system 1000, while in other examples, these may be modular and incorporated into the head-mounted display system 1000 as needed by the user.

[0538] 5.2.1 Head-mounted display unit

[0539] The head mounted display unit 1200 may include a structure for providing an observable output to the user. Specifically, the head mounted display unit 1200 is arranged to be held in an operating position in front of the user's face (e.g., manually, by a positioning and stabilization structure, etc.).

[0540] In some examples, head-mounted display unit 1200 may include display screen 1220, display unit housing 1205, interface structure 1100, and / or optical lens 1240. The components may be permanently assembled into a single head-mounted display unit 1200, or they may be separable and selectively connected by a user to form head-mounted display unit 1200. Additionally, display screen 1220, display unit housing 1205, interface structure 1100, and / or optical lens 1240 may be included in head-mounted display system 1000 but may not be part of head-mounted display unit 1200.

[0541] 5.2.1.1 Display

[0542] Some forms of the head mounted display unit 1200 include a display, such as a display screen ( Figure 4B 1205 ), but is disposed within the display housing 1205. The display screen may include electronic components that provide observable output to a user.

[0543] In one form of the present technology, a display screen provides an optical output observable by a user. The optical output allows the user to observe a virtual environment and / or virtual objects.

[0544] The display screen can be positioned close to the user's eyes to allow the user to view the display screen. For example, the display screen can be located in front of the user's eyes. The display screen can output computer-generated images and / or virtual environments.

[0545] In some forms, the display screen is an electronic display. The display screen can be a liquid crystal display (LCD) or a light emitting diode (LED) screen.

[0546] In some versions, the display screen may include a backlight that helps illuminate the display screen. This may be particularly beneficial when viewing the display screen in a dark environment.

[0547] In some forms, the display screen may extend a wider distance between the user's pupils. The display screen may also be wider than the distance between the user's cheeks.

[0548] In some forms, the display screen may display at least one image observable by the user. For example, the display screen may display an image that changes based on predetermined conditions (e.g., passage of time, movement of the user, input from the user, etc.).

[0549] In some embodiments, a portion of the display screen may be visible to only one eye of the user. In other words, a portion of the display screen may be positioned near and in front of one eye of the user (e.g., the right eye) and blocked from viewing by the other eye (e.g., the left eye).

[0550] In one example, a display screen may be split into two sides (eg, a left side and a right side), and two images may be displayed at a time (eg, one image on each side).

[0551] Each side of the display screen can show a similar image. In some examples, the images can be the same, while in other examples, the images can be slightly different.

[0552] The two images on the display screen together can form a binocular display, which can provide a more realistic VR experience to the user. In other words, the user's brain can process the two images from the display screen 1220 together as a single image. Providing two (e.g., different) images can allow the user to view virtual objects in their periphery and expand their field of view in the virtual environment.

[0553] In some versions, the display screen can be positioned so that both eyes of the user can see it. The display screen can output a single image at a time, which can be seen by both eyes. This can simplify processing compared to a multi-image display screen.

[0554] 5.2.1.2 Display housing

[0555] In such Figure 4A and 4BIn some forms of the present technology shown, the display unit housing 1205 provides a support structure for the display screen to maintain the position of at least some components of the display screen relative to each other and may additionally protect the display screen and / or other components of the head mounted display unit 1200. The display unit housing 1205 may be constructed of a material suitable for protecting the display screen from impact forces. The display unit housing 1205 may also contact the user's face and may be constructed of a biocompatible material suitable for limiting irritation to the user.

[0556] The display unit housing 1205 according to some forms of the present technology may be constructed from a hard, rigid or semi-rigid material such as plastic.

[0557] In some forms, the rigid or semi-rigid material may be at least partially covered with a soft and / or flexible material (e.g., textile, silicone, etc.). This may improve biocompatibility and / or user comfort because at least the portion of the display unit housing 1205 that the user engages (e.g., grasps with their hand) includes a soft and / or flexible material.

[0558] Other forms of display unit housing 1205 according to the present technology may be constructed from a soft, flexible, elastic material, such as silicone rubber.

[0559] In some forms, the display unit housing 1205 may have a substantially rectangular or substantially oval profile.The display unit housing 1205 may have a three-dimensional shape having a substantially rectangular or substantially oval profile.

[0560] In some forms, the display unit housing 1205 may include an upper surface 1230, a lower surface 1232, a lateral left surface 1234, a lateral right surface 1236, and a front surface 1238. The display screen 1220 may be retained within the face during use.

[0561] In certain forms, upper surface 1230 and lower surface 1232 may have substantially the same shape.

[0562] In one form, the upper surface 1230 and the lower surface 1232 may be substantially flat and extend along parallel planes (eg, substantially parallel to the horizontal plane in use).

[0563] In some forms, lateral left surface 1234 and lateral right surface 1236 may have substantially the same shape.

[0564] In one form, the lateral left surface 1234 and the lateral right surface 1236 may be curved and / or rounded between the upper surface 1230 and the lower surface 1232. The rounded and / or curved surfaces 1234, 1236 may be more comfortable for the user to grasp and hold when donning and / or doffing the head mounted display system 1000.

[0565] In some forms, front surface 1238 may extend between upper surface 1230 and lower surface 1232. Front surface 1238 may form the front-most portion of head mounted display system 1000.

[0566] In one form, the front surface 1238 can be a substantially flat surface and can be substantially parallel to the coronal plane when the user wears the head mounted display system 1000.

[0567] In one form, the front face 1238 may not have a corresponding opposing face (eg, rear face) that is substantially the same shape as the front face 1238. The rear portion of the display unit housing 1205 may be at least partially open (eg, recessed in a front direction) to receive the user's face.

[0568] In some forms, the display screen is permanently integrated into the head mounted display system 1000. The display screen may be a device that is usable only as part of the head mounted display system 1000.

[0569] In some forms, the display unit housing 1205 may surround the display screen, which may protect the display screen and / or limit user interference with (eg, removal and / or vandalism of) components of the display screen.

[0570] In some embodiments, the display screen may be substantially sealed within the display unit housing 1205 to limit the collection of dust or other debris on the surface of the display screen, which may adversely affect a user's ability to view images output by the display screen. Because the display screen cannot be removed from the display unit housing 1205, a user may not need to break the seal and access the display screen.

[0571] In some forms, the display screen is detachably integrated into the head-mounted display system 1000. The display screen may be a device used as a whole independently of the head-mounted display system 1000. For example, the display screen may be provided on a smartphone or other portable electronic device.

[0572] In some embodiments, the display unit housing 1205 may include a compartment. A portion of the display screen may be removably housed within the compartment. For example, a user may removably position the display screen within the compartment. This may be useful if the display screen performs additional functions outside of the head-mounted display unit 1200 (e.g., a portable electronic device such as a cell phone). Additionally, removing the display screen from the display unit housing 1205 may facilitate cleaning and / or replacement by the user.

[0573] Some forms of the display housing include an opening to the compartment, allowing a user to more easily insert and remove the display screen from the compartment. The display screen may be retained within the compartment by a frictional engagement.

[0574] In some forms, the cover may selectively cover the compartment and may provide additional protection and / or security to display screen 1220 when located within the compartment.

[0575] In some forms, the compartment may be open on the upper surface.When the user wears the display interface 1000, the display screen may be inserted into the compartment in a substantially vertical orientation.

[0576] 5.2.1.3 Interface structure

[0577] like Figure 4A and 4B As shown, some forms of the present technology include an interface structure 1100 that positions and / or arranges the shape of the face and can provide increased comfort to the user when wearing and / or using the head-mounted display system 1000.

[0578] In some forms, the interface structure 1100 is coupled to a surface of the display unit housing 1205 .

[0579] In some embodiments, the interface structure 1100 can extend at least partially around the display unit housing 1205 and can form a viewing opening. In use, the viewing opening can at least partially accommodate the user's face. Specifically, the user's eyes can be accommodated within the viewing opening formed by the interface structure 1100.

[0580] In some forms, an interface structure 1100 in accordance with the present technology may be constructed from biocompatible materials.

[0581] In some forms, an interface structure 1100 in accordance with the present technology may be constructed of soft, flexible, and / or elastic materials.

[0582] In certain forms, an interface structure 1100 in accordance with the present technology may be constructed from silicone rubber and / or foam.

[0583] In some forms, the interface structure 1100 can contact sensitive areas of the user's face, which can be uncomfortable locations. The material forming the interface structure 1100 can cushion the sensitive areas and limit the user's discomfort when wearing the head-mounted display system 1000.

[0584] In some embodiments, the sensitive area may include the user's forehead. Specifically, this may include areas of the user's head near the frontal bone, such as the cranial muscles and / or the glabella. Such areas may be sensitive because there is limited natural cushioning from muscle and / or fat between the user's skin and bone. Similarly, the ridge of the user's nose may also include little or no natural cushioning.

[0585] In some forms, the interface structure 1100 can comprise a single element. In some embodiments, the interface structure 1100 can be designed for mass production. For example, the interface structure 1100 can be designed to comfortably fit a wide range of different facial shapes and sizes.

[0586] In some forms, the interface structure 1100 may include different elements that cover different areas of the user's face. Different portions of the interface structure 1100 may be constructed of different materials and provide different textures and / or cushioning to the user in different areas.

[0587] 5.2.1.3.1 Sunshade

[0588] Some versions of the head-mounted display system 1000 may include a light shield, which may be constructed of an opaque material and may block ambient light from reaching the user's eyes. The light shield may be part of the interface structure 1100 or may be a separate element. In some examples, in addition to providing a comfortable contact portion for contact between the head-mounted display 1200 and the user's face, the interface structure 1100 may also form a light shield by shielding the user's eyes from ambient light. In some examples, the light shield may be formed from multiple components that work together to block ambient light.

[0589] In some forms, the visor can block ambient light from reaching the eye area, which can be formed in the area of ​​the cranial muscles, the user's sphenoid bone, the outer cheek area between the sphenoid bone and the left or right zygomatic arch, on the zygomatic arch, the inner cheek area from the zygomatic arch toward the pterygoid ridge, and on the user's nasal ridge located below the sphenoid bone to enclose a portion of the user's face therebetween.

[0590] In one embodiment, the light shield may not contact the user's face around its entire perimeter. For example, the light shield may be spaced apart from the user's nasal spine. The width of the space may be substantially small to substantially limit the ingress of ambient light. However, the user's nasal spine may be sensitive and easily irritated. Therefore, avoiding direct contact with the user's nasal spine may improve the user's comfort when wearing the head-mounted display system 1000.

[0591] In some forms, the light shield may be part of the display unit housing 1205 and may be integrally or removably coupled to the display unit housing 1205. In one form, if the display unit housing 1205 is usable with a display screen that outputs both AR or MR and VR, the light shield may be removed from the display unit housing 1205 and coupled to the display unit housing 1205 only when VR is used.

[0592] 5.2.1.3.1.1 Sealing structure

[0593] like Figure 4D As shown, in one form of the present technology, the interface structure 1100 acts as a seal-forming structure and provides a target seal-forming area. The target seal-forming area is the area on the seal-forming structure where a seal is likely to occur. The area where a seal actually occurs—the actual sealing surface—can vary from day to day and from user to user over a given period of time, depending on a number of factors, including, but not limited to, the position of the display unit housing 1205 on the face, the tension in the positioning and stabilizing structure 1300, and / or the shape of the user's face.

[0594] In one form, the targeted seal-forming area is located on an exterior surface of the interface structure 1100 .

[0595] In some forms, the visor may form a seal-forming structure and seal against the user's face.

[0596] In some embodiments, the entire perimeter of the light shield or interface structure 1100 can be sealed against the user's skin and can block ambient light from reaching the eye region. The eye region can be formed over the area of ​​the cranial muscles, over the user's sphenoid bone, across the outer cheek region from the sphenoid bone to the left or right zygomatic arch, over the zygomatic arch, across the inner cheek region from the zygomatic arch toward the pterygoid ridge, and over the user's nasal ridge below the sphenoid bone to enclose a portion of the user's face therebetween.

[0597] When used as a seal-forming structure, the light shield or interface structure 1100 can contact sensitive areas of the user's face, such as the user's nasal spine. This contact can completely prevent the ingress of ambient light. The seal around the entire perimeter of the display unit housing 1205 can improve the performance of the head-mounted display system 1000. In addition, biocompatible materials can be selected so that direct contact with the user's nasal spine does not significantly reduce the user's comfort when wearing the head-mounted display system 1000.

[0598] In some forms of the present technology, a system is provided that includes more than one interface structure 1100, each interface structure configured to correspond to a different range of sizes and / or shapes. For example, the system may include one form of interface structure 1100 that is suitable for large heads but not for small heads, and another form of interface structure 1100 that is suitable for small heads but not for large heads. The different interface structures 1100 may be removable and interchangeable, allowing different users with different head sizes to use the same head-mounted display system 1000.

[0599] In some embodiments, the seal-forming structure may be formed on the cranial muscles, the user's sphenoid bone, the outer cheek area between the sphenoid bone and the left or right zygomatic arch, the zygomatic arch, the inner cheek area from the zygomatic arch toward the pterygoid crest, and the user's nasal ridge below the sphenoid bone, thereby enclosing a portion of the user's face therebetween. The defined area may be the eye area.

[0600] In some forms, this can seal around the user's eyes.The seal formed by the seal-forming structure or interface structure 1100 can form a light seal to limit ambient light from reaching the user's eyes.

[0601] 5.2.1.3.2 Material biocompatibility

[0602] Biocompatible materials are considered to be those that have undergone a comprehensive evaluation of biological responses relevant to their safety of use according to ISO 10993-1. This evaluation takes into account the nature and duration of the expected contact with human tissue during use. In some forms of this technology, the materials used in the positioning and stabilizing structures and the interface structures can be subjected to at least some of the following biocompatibility tests: Cytotoxicity - Elution Test (MeM Extract): ANSI / AAMI / ISO 10993-5; Skin Sensitization: ISO 10993-10; Irritation: ISO 10993-10; Genotoxicity - Bacterial Mutagenicity Test: ISO 10993-3; Implantation: ISO 10993-6.

[0603] 5.2.1.4 Optical lenses

[0604] like Figure 4BAs shown, at least one lens 1240 can be positioned between the user's eyes and the display screen 1220. The user can view images provided by the display screen 1220 through the lens 1240. The at least one lens 1240 can help space the display screen 1220 from the user's face to limit eye strain. The at least one lens 1240 can also help better observe images displayed by the display screen 1220.

[0605] In some forms, lens 1240 is a Fresnel lens.

[0606] In some forms, lens 1240 may have a generally frustoconical shape. In use, the wider end of lens 1240 may be positioned proximate display screen 1220, while the narrower end of lens 1240 may be positioned proximate the user's eyes.

[0607] In some forms, lens 1240 can have a substantially cylindrical shape and, in use, can have substantially the same width proximate display screen 1220 and proximate a user's eye.

[0608] In some forms, at least one lens 1240 may also magnify the image on display screen 1220 to assist the user in viewing the image.

[0609] In some embodiments, head-mounted display system 1000 includes two lenses 1240 (e.g., a binocular display), one for each eye of the user. In other words, each eye of the user can see through a separate lens located in front of its corresponding pupil. Each lens 1240 can be identical, although in some examples, one lens 1240 can be different from the other lens 1240 (e.g., having a different magnification).

[0610] In some embodiments, display screen 1220 can output two images simultaneously. Each eye of the user can only see one of the two images. The images can be displayed side by side on display screen 1220. Each lens 1240 allows each eye to view only the image closest to the corresponding eye. The user can view the two images together as a single image.

[0611] In some embodiments, the posterior perimeter of each lens 1240 can be approximately the size of the user's eye socket. The posterior perimeter can be slightly larger than the size of the user's eye socket to ensure that the user's entire eye can see the corresponding lens 1240. For example, the outer edge of each lens 1240 can be aligned superiorly with the user's frontal bone (e.g., near the user's eyebrows) and can be aligned inferiorly with the user's maxillary bone (e.g., near the outer cheek area).

[0612] The positioning and / or size of lenses 1240 may allow a user to have approximately 360° of peripheral vision in a virtual environment in order to closely simulate the physical environment.

[0613] In some embodiments, the head-mounted display system 1000 includes a single lens 1240 (e.g., a monocular display). The lens 1240 can be positioned in front of both eyes (e.g., so that both eyes view images from the display screen 1220 through the lens 1240), or can be positioned in front of only one eye (e.g., so that only one eye can view images from the displaced screen 1220).

[0614] 5.2.1.4.1 Lens Installation

[0615] The lens 1240 can be coupled to a spacer positioned near the display screen 1220 (eg, between the display screen 1220 and the interface structure 1100 ) so that the lens 1240 is not in direct contact with the display screen 1220 (eg, to limit the lens 1240 from scratching the display screen 1220 ).

[0616] For example, lens 1240 can be recessed relative to interface structure 1100 so that lens 1240 is disposed within the viewing opening. In use, each eye of the user is aligned with a corresponding lens 1240 while the user's face is received within the viewing opening (eg, in an operative position).

[0617] In some forms, the front perimeter of each lens 1240 may surround approximately half of the display screen 1220. There may be a substantially small gap between the two lenses 1240 along the centerline of the display screen 1220. This may allow a user viewing through both lenses 1240 to view substantially the entire display screen 1220 and all images output to the user.

[0618] In some forms, the center of the display screen 1220 (e.g., along the centerline between the two lenses 1240) may not output an image. For example, in a binocular display (e.g., where each side of the display screen 1220 outputs a substantially identical image), each image may be spaced apart on the display screen 1220. This may allow the two lenses 1240 to be positioned proximate to the display screen 1220 while allowing the user to view the entire image displayed on the display screen 1220.

[0619] In some forms, a protective layer 1242 may be formed around at least a portion of the lens 1240. In use, the protective layer 1242 may be positioned between the user's face and the display screen 1220.

[0620] In some forms, a portion of each lens 1240 may protrude in a posterior direction through the protective layer 1242. For example, in use, the narrow end of each lens 1240 may protrude further posteriorly than the protective layer 1242.

[0621] In some forms, protective layer 1242 may be opaque so that light from display screen 1220 cannot pass through. Additionally, a user may be unable to view display screen 1220 without looking through lens 1240.

[0622] In some forms, the protective layer 1242 can be non-planar and can include a contour that substantially matches the contours of the user's face. For example, a portion of the protective layer 1242 can be recessed in the front direction to accommodate the user's nose.

[0623] In some embodiments, the user may not contact the protective layer 1242 when wearing the head mounted display system 1000. This may help reduce irritation caused by additional contact with the user's face (e.g., against the sensitive nasal spine area).

[0624] 5.2.1.4.2 Corrective lenses

[0625] In some examples, an additional lens can be coupled to lens 1240 so that a user views images output by display screen 1220 through lens 1240 and the additional lens.

[0626] In some forms, in use, the additional lens is further back than lens 1240. Thus, the additional lens is positioned closer to the user's eye, and the user views the additional lens before viewing lens 1240.

[0627] In some forms, the additional lens may have a different magnification than lens 1240.

[0628] In some forms, the additional lenses may be prescription strength lenses. The additional lenses may allow a user to view display screen 1220 without glasses, which may be uncomfortable to wear when using head mounted display system 1000. The additional lenses may be removable so that a user who does not need the additional lenses can still clearly view display screen 1220.

[0629] 5.2.2 Positioning and stabilizing the structure

[0630] like Figure 4A and 4B As shown, the display screen 1220 and / or display unit housing 1205 of the head-mounted display system 1000 of the present technology can be held in place by the positioning and stabilizing structure 1300 during use.

[0631] To maintain the display screen 1220 and / or display unit housing 1205 in its correct operating position, the positioning and stabilizing structure 1300 is ideally comfortable relative to the user's head, accommodating the load caused by the weight of the display unit in a manner that minimizes facial markings and / or pain from prolonged use. A universal fit is also desirable without sacrificing comfort, usability, and manufacturing cost. Design criteria may include adjustability over a predetermined range for a low-touch, simple setup solution with a low dexterity threshold. Further considerations include catering to the dynamic environments in which the head-mounted display system 1000 may be used. As part of the immersive experience in a virtual environment, the user may communicate, i.e., speak, while using the head-mounted display system 1000. Thus, the user's jaw or mandible may move relative to the other bones of the skull. Furthermore, the entire head may move during periods of use of the head-mounted display system 1000. For example, this may involve movement of the user's upper torso, and in some cases, lower torso, and particularly movement of the head relative to both upper and lower torso.

[0632] In one form, the positioning and stabilizing structure 1300 provides a retaining force to overcome the effects of gravity on the display screen 1220 and / or the display unit housing 1205 .

[0633] In one form of the present technology, a positioning and stabilizing structure 1300 is provided that is configured in a manner consistent with a user's comfort. In one example, the positioning and stabilizing structure 1300 has a low profile or cross-sectional thickness to reduce the perceived or actual bulk of the device. In one example, the positioning and stabilizing structure 1300 includes at least one strap having a rectangular cross-section. In one example, the positioning and stabilizing structure 1300 includes at least one flat strap.

[0634] In one form of the present technology, a positioning and stabilizing structure 1300 is provided that is configured so as not to be too large and bulky to prevent a user from comfortably moving from side to side.

[0635] In one form of the present technology, the positioning and stabilizing structure 1300 comprises a strap comprised of a laminate of a fabric user-contacting layer, a foam inner layer, and a fabric outer layer. In one form, the foam is porous to allow moisture (e.g., perspiration) to pass through the strap. In one form, the skin-contacting layer of the strap is formed from a material that helps wick moisture away from the user's face. In one form, the fabric outer layer comprises a loop material that partially engages with a hook material.

[0636] In some forms of the present technology, the positioning and stabilizing structure 1300 includes an extendable strap, such as an elastically extendable strap. For example, the strap can be configured to be in tension during use and to direct a force to pull the display screen 1220 and / or display unit housing 1205 toward a portion of the user's face, particularly proximate to the user's eyes and in line with their field of vision. In one example, the strap can be configured as a tie.

[0637] In one form of the present technology, the positioning and stabilising structure 1300 comprises a first strap constructed and arranged such that, in use, at least a portion of its lower edge passes above the supra-auricular base of the user's head and covers a portion of the parietal bone without covering the occipital bone.

[0638] In one form of the present technology, the positioning and stabilising structure 1300 includes a second strap constructed and arranged such that, in use, at least a portion of its upper edge passes beneath and covers or lies beneath the occipital bone of the user's head.

[0639] In one form of the present technology, the positioning and stabilising structure 1300 includes a third strap constructed and arranged to interconnect the first strap and the second strap to reduce the tendency of the first strap and the second strap to separate from each other.

[0640] In some forms of the present technology, the positioning and stabilizing structure 1300 comprises a flexible and, for example, non-rigid strap. An advantage of this aspect is that the strap rests more comfortably on the user's head.

[0641] In some forms of the present technology, the positioning and stabilising structure 1300 comprises a strip configured to be breathable to allow moisture vapor to pass through the strip.

[0642] In certain forms of the present technology, a system is provided that includes more than one positioning and stabilizing structure 1300, each positioning and stabilizing structure configured to provide a retention force corresponding to a different range of sizes and / or shapes. For example, the system may include one form of positioning and stabilizing structure 1300 that is suitable for large heads but not small heads, and another form that is suitable for small heads but not for large and small heads.

[0643] In some forms, the positioning and stabilizing structure 1300 may include a cushioning material (e.g., a foam pad) for contacting the user's skin. The cushioning material may provide additional wear resistance to the positioning and stabilizing structure 1300, particularly if the positioning and stabilizing structure 1300 is constructed of a rigid or semi-rigid material.

[0644] 5.2.2.1 Temporary connectors

[0645] like Figure 4CAs shown, some versions of the head-mounted display system 1000 or positioning and stabilizing structure 1300 include temporal bone connectors 1250, each of which can cover a corresponding one of the user's temporal bones during use. A portion of the temporary connector 1250 contacts an area of ​​the user's head just above the backs of the ears, i.e., at the base of each ear. In some examples, the temporary connector is a strap portion of the positioning and stabilizing structure 1300. In other examples, the temporary connector is an arm of the head-mounted display unit 1200. In some examples, the temporary connector of the head-mounted display system 1000 can be formed partially by a strap portion (e.g., lateral strap portion 1330) of the positioning and stabilizing structure 1300 and partially by an arm 1210 of the head-mounted display unit 1200.

[0646] The temporary connectors 1250 may be lateral portions of the positioning and stabilizing structure 1300 in that each temporary connector 1250 is positioned on the left or right side of the user's head.

[0647] In some versions, the temporal lobe connector 1250 can extend in the anterior-posterior direction and can be substantially parallel to the sagittal plane.

[0648] In some forms, temporary connectors 1250 may be coupled to display unit housing 1205. For example, temporary connectors 1250 may be coupled to a side of display unit housing 1205. For example, each temporary connector 1250 may be coupled to a respective one of lateral left surface 1234 and lateral right surface 1236.

[0649] In some forms, the temporary connections 1250 may be pivotally connected to the display unit housing 1205 and may provide relative rotation between each temporary connection 1250 and the display unit housing 1205 .

[0650] In some forms, the temporary connection 1250 may be removably connected to the display unit housing 1205 (eg, via magnets, mechanical fasteners, hook and loop material, etc.).

[0651] In some forms, the temporary connection 1250 may be arranged, in use, to extend generally along or parallel to the Frankfort plane of the head and above the zygomatic bone (eg, above the cheekbone of the user).

[0652] In some forms, the temporary connection 1250 may be positioned against the user's head similar to the arms of eyeglasses and positioned higher than the antihelix of each respective ear.

[0653] In some forms, temporary connectors 1250 may have a generally elongated and flat configuration. In other words, each temporary connector 1250 is much longer and wider (from top to bottom in the plane of the paper) than it is thick (into the plane of the paper).

[0654] In some forms, the temporary connectors 1250 can each have a three-dimensional shape having curvature in all three axes (X, Y, and Z). While the thickness of each temporary connector 1250 can be substantially uniform, its height varies throughout its length. The shape and size of each temporary connector 1250 is intended to conform closely to the user's head so as to remain unobtrusive and maintain a low profile (e.g., not appear overly bulky).

[0655] In some embodiments, the temporary connector 1250 can be constructed from a rigid or semi-rigid material, which may include plastic, nylon (thermoplastic polyester elastomer), or another similar material. The rigid or semi-rigid material can be self-supporting and / or capable of maintaining its shape without wearing out. This can make it more intuitive or obvious for the user to understand how to use the positioning and stabilizing structure 1300, and can be contrasted with a positioning and stabilizing structure 1300 that is completely flexible and does not maintain its shape. Keeping the temporary connector 1250 in the use state before use can prevent or limit deformation while the user is wearing the positioning and stabilizing structure 1300, and allows the user to quickly fit or don the head-mounted display system 1000.

[0656] In some versions, the temporary connection 1250 may be a rigid member, which may allow tension to translate more efficiently (eg, directly) through the temporary connection 1250 because the rigid member limits the amount of elongation or deformation of the arm during use.

[0657] In some embodiments, the positioning and stabilizing structure 1300 can be designed so that the positioning and stabilizing structure 1300 "pops out of the box" and generally enters its in-use configuration. Furthermore, the positioning and stabilizing structure 1300 can be arranged to retain its in-use shape once out of the box (e.g., because multiple rigid members can be formed to maintain the shape of some or part of the positioning and stabilizing structure 1300). Advantageously, the orientation of the positioning and stabilizing structure 1300 is clear to the user because the shape of the positioning and stabilizing structure 1300 is generally curved much like the back of the user's head. That is, the positioning and stabilizing structure 1300 is generally dome-shaped.

[0658] In some forms, a flexible and / or elastic material can be disposed around the rigid or semi-rigid material of the temporary connector 1250. The flexible material can fit more comfortably against the user's head, thereby improving wear resistance and providing soft contact with the user's face. In one form, the flexible material is a fabric sleeve that is permanently or removably coupled to each temporary connector 1250.

[0659] In one form, the fabric can be overmolded onto at least one side of the rigid member. In one form, the rigid member can be formed separately from the elastic component, and then a cover of user-contact material (e.g., Breath-O-Prene™) can be wrapped or slipped over the rigid member. In alternative forms, the user-contact material can be provided to the rigid member by adhesive, ultrasonic welding, sewing, hook and loop material, and / or stud fasteners.

[0660] In some forms, the user contacting material may be on both sides of the rigid member, or alternatively may be on only the user contacting side of the rigid member (eg, the user contacting side) to reduce material bulk and cost.

[0661] In some forms, temporary connection 1250 is constructed from a flexible material (eg, textile) that may be comfortable against the user's skin and may not require added layers for increased comfort.

[0662] 5.2.2.2 Rear support

[0663] like Figure 4C As shown, some forms of the positioning and stabilizing structure 1300 may include a rear support portion 1350 for assisting in supporting the display screen 1220 and / or the display unit housing 1205 (e.g., Figure 4B ). The rear support 1350 can help secure the display screen and / or display unit housing 1205 to the user's head so that the display screen is properly oriented close to the user's eyes.

[0664] In some forms, rear support 1350 may be coupled to display unit housing 1205 via temporal connection 1250 .

[0665] In some forms, the temporary connection 1250 may be coupled directly to the display unit housing 1205 and the rear support 1350 .

[0666] In some forms, the rear support portion 1350 can have a three-dimensional contour curve to fit the shape of the user's head. For example, the three-dimensional shape of the rear support portion 1350 can have a generally circular three-dimensional shape that is suitable for covering a portion of the parietal bone and occipital bone of the user's head during use.

[0667] In some versions, the posterior support portion 1350 may be a posterior portion of the positioning and stabilizing structure 1300. The posterior support portion 1350 may provide an anchoring force that is at least partially directed in an anterior direction.

[0668] In some embodiments, rear support 1350 is the lowest portion of positioning and stabilizing structure 1300. For example, rear support 1350 can contact the area of ​​the user's head between the occipital bone and the trapezius muscles. Rear support 1350 can hook onto the lower edge of the occipital bone (e.g., the occipital region). Rear support 1350 can provide upward and / or forward force to maintain contact with the back of the user's head.

[0669] In some embodiments, the rear support 1350 is the lowest portion of the entire head-mounted display system 1000. For example, the rear support 1350 can be positioned at the base of the user's neck (e.g., covering the occipital bone and trapezius muscles and lower than the user's eyes), such that the rear support 1350 is lower than the display screen 1220 and / or the display unit housing 1205.

[0670] In some embodiments, the rear support 1350 can include a cushioning material that can contact the user's head (e.g., covering the area between the occipital bone and the trapezius muscles). The cushioning material can provide additional comfort to the user and limit marks caused by the rear support 1350 pulling on the user's head.

[0671] 5.2.2.3 Forehead support

[0672] Some versions of the positioning and stabilising structure 1300 may include a forehead support or portion 1360 configured to contact the user's head above the eyes during use. Figure 5B The positioning and stabilizing structure 1300 shown includes a forehead support 1360. In some examples, Figure 4A The illustrated positioning and stabilizing structure 1300 may include a forehead support 1360. The forehead support 1360 may cover the frontal bone of the user's head. In some embodiments, the forehead support 1360 may also be higher than the sphenoid bone and / or temporal bone. This may also position the forehead support 1360 higher than the user's eyebrows.

[0673] In some forms, forehead support 1360 may be a front portion of positioning and stabilizing structure 1300 and may be positioned further forward on the user's head than any other portion of positioning and stabilizing structure 1300. Rear support 1350 may provide a force that is at least partially directed in a rearward direction.

[0674] In some forms, the forehead support 1360 may include a cushioning material (e.g., fabric, foam, silicone, etc.) that may contact the user and may help limit markings caused by the straps of the positioning and stabilizing structure 1300. The forehead support 1360 and the interface structure 1100 may work together to provide comfort to the user.

[0675] In some forms, forehead support 1360 may be separate from display unit housing 1205 and may contact the user's head at a different location than display unit housing 1205 (eg, further above).

[0676] In some forms, forehead support 1360 may be adjustable to allow positioning and stabilizing structure 1300 to adapt to the shape and / or configuration of a user's face.

[0677] In some versions, temporary connector 1250 may be coupled to forehead support 1360 (eg, on a lateral side of forehead support 1360 ). Temporal connector 1250 may extend at least partially in an inferior direction to couple to posterior support 1350 .

[0678] In some forms, the positioning and stabilizing structure 1300 may include multiple pairs of temporary connectors 1250. For example, a pair of temporary connectors 1250 may be connected to the forehead support 1360, and a pair of temporary connectors 1250 may be coupled to the display unit housing 1205.

[0679] In some embodiments, forehead support 1360 can be angled substantially parallel to the user's forehead to provide improved comfort to the user. For example, forehead support 1360 can position the user in an orientation that overlies the frontal bone and is substantially parallel to the coronal plane. Positioning the forehead support substantially parallel to the coronal plane can reduce the likelihood of pressure sores caused by uneven presentation.

[0680] In some embodiments, the forehead support 1360 can be offset from the rear support or rear support portion that contacts the back region of the user's head (e.g., the area covering the occipital bone and trapezius muscles). In other words, the axis along the rear strap will not intersect the forehead support 1360, and the forehead support 1360 can be positioned lower and more forward than the axis along the rear strap. The resulting offset between the forehead support 1360 and the rear strap can create a moment that counteracts the weight of the display screen 1220 and / or display unit housing 1205. A greater offset can create a greater moment, thereby more effectively maintaining the correct position of the display screen 1220 and / or display unit housing 1205. The offset can be increased by moving the forehead support 1360 closer to the user's eyes (e.g., further forward and downward along the user's head) and / or increasing the angle of the rear strap to make it more vertical.

[0681] 5.2.2.4 Adjustable straps

[0682] like Figure 4CAs shown, portions of the positioning and stabilizing structure 1300 may be adjustable to apply selective tension to the display screen 1220 and / or the display unit housing 1205 to secure the position of the display screen 1220 and / or the display unit housing 1205 .

[0683] In some forms, the display unit housing 1205 may include at least one ring or eyelet 1254 (e.g., Figure 4B ), and at least one of the temporary connectors 1250 can be threaded through the loop and folded back on itself. The length of the temporary connector 1250 threaded through the corresponding eyelet 1254 can be selected by the user to adjust the tension provided by the positioning and stabilizing structure 1300. For example, threading a longer length of temporary connector 1250 through the eyelet 1254 can provide greater tension.

[0684] In some forms, at least one of the temporary connectors 1250 may include an adjusting portion 1256 and a receiving portion 1258 (e.g., Figure 4C ). Adjustment portion 1256 can be threaded through eyelet 1254 on display unit housing 1205 and can be coupled to receiving portion 1258 (e.g., by folding back on itself). Adjustment portion 1256 can include hook material, and receiving portion 1258 can include loop material (or vice versa), such that adjustment portion 1256 can be removably retained in a desired position. In some examples, the hook and loop materials can be Velcro.

[0685] In some forms, adjusting the position of the adjustment portion 1256 relative to the receiving portion 1258 can apply a rearward force to the display screen 1220 and / or display unit housing 1205 and increase or decrease the sealing force of the light shield against the user's head (e.g., when the light shield is used as a seal-forming structure).

[0686] In some embodiments, the adjustment portion 1256 can be constructed of a flexible and / or elastic material that can conform to the shape of the user's head and / or can allow the adjustment portion to be threaded through the eyelet 1254. For example, the adjustment portion 1256 can be constructed of an elastic fabric that can provide elastic tension. The remainder of the temporary connector 1250 can be constructed of the rigid or semi-rigid materials described above (although it is contemplated that additional portions of the temporary connector 1250 can also be constructed of flexible materials).

[0687] 5.2.2.4.1 Top strap

[0688] In some forms, the positioning and stabilizing structure 1300 may include a top strap portion that covers the upper region of the user's head. Figure 1A The illustrated head mounted display system 1000 has a top strap.

[0689] In some forms, the top strap portion may extend between the front of the head mounted display system 1000 and a rear region of the head mounted display system 1000 .

[0690] In some forms, the top strap portion may be constructed of a flexible material and may be configured to complement the shape of a user's head.

[0691] In some forms, the top strap portion can be connected to the display unit housing 1205. For example, the top strap portion can be connected to the upper surface 1230. The top strap portion can also be connected to the display unit housing 1205 near the rear end of the display unit housing 1205.

[0692] In some embodiments, the top strap portion can be connected to the forehead support 1360. For example, the top strap portion can be connected to the forehead support 1360 near the upper edge. The top strap portion can be connected to the display unit housing 1205 through the forehead support 1360.

[0693] In some forms, the top strap portion can be connected to the rear support portion 1350. For example, the top strap portion can be connected to the rear support portion 1350 near its upper edge.

[0694] In some versions, the top strap portion may cover the frontal and parietal bones of the user's head.

[0695] In some embodiments, the top strap portion may extend along a sagittal plane as it extends between the front and back of the head mounted display system 1000.

[0696] In some forms, the top strap portion may apply a tension that is at least partially oriented in an upward direction, which tension may be opposite to the force of gravity.

[0697] In some forms, the top strap portion can apply a tensile force that is at least partially oriented in a posterior direction, which can pull the interface structure 1100 toward the user's face (and provide a portion of the sealing force when the visor acts as a seal-forming structure).

[0698] In some forms, the top strap portion may be adjustable to apply selective tension on the display screen 1220 and / or display unit housing 1205 to secure the position of the display screen 1220 and / or display unit housing 1205 .

[0699] In some embodiments, the display unit housing 1205 and / or the forehead support 1360 (as applicable) may include at least one loop or eyelet 1254, and the top strap portion may be threaded through the eyelet 1254 and folded back upon itself. The length of the top strap portion threaded through the eyelet 1254 may be user-selectable to adjust the tension provided by the positioning and stabilizing structure 1300. For example, threading a greater length of the top strap portion through the eyelet 1254 may provide greater tension.

[0700] In some embodiments, the top strap portion may include an adjustment portion and a receiving portion. The adjustment portion may be positioned through eyelet 1254 and may be coupled to the receiving portion (e.g., by folding back upon itself). The adjustment portion may include a hook material, and the receiving portion may include a loop material (or vice versa), such that the adjustment portion can be removably retained in a desired position. In some examples, the hook and loop materials may be Velcro.

[0701] 5.2.2.5 Rotation Control

[0702] In some embodiments, the display unit housing 1205 and / or the display screen 1220 can pivot relative to the user's face while the user is wearing the positioning and stabilization structure. This can allow the user to see the physical environment while still wearing the user interface 1100. This can be useful for users who want to take a break to view the virtual environment but do not want to take the positioning and stabilization structure 1300 offline.

[0703] In some forms, a pivot connection 1260 may be formed between an upper portion of the display unit housing 1205 and the positioning and stabilising structure 1300. For example, the pivot connection 1260 may be formed on the upper surface 1230 of the display unit housing 1205.

[0704] In some forms, the pivot connection 1260 can be connected to the forehead support 1360. The display unit housing 1205 can be pivotable about a lower edge of the forehead support 1360.

[0705] In one form, the temporary connection 1250 may be connected to the forehead support 1360 to allow the display unit housing 1205 to pivot.

[0706] In some forms, the pivot connection 1260 may be a ratcheting connection and may maintain the display unit housing 1205 in a raised position without additional user intervention.

[0707] 5.2.3 Controller

[0708] like Figure 6 As shown, some forms of the head-mounted display system 1000 include a controller 1270 that can be engaged by a user to provide user input to the virtual environment and / or control the operation of the head-mounted display system 1000. The controller 1270 can be connected to the head-mounted display unit 1200 and provide the user with the ability to interact with virtual objects output to the user from the head-mounted display unit 1200.

[0709] 5.2.3.1 Handheld controller

[0710] In some forms, controller 1270 may comprise a handheld device and may be easily grasped by a user with a single hand.

[0711] In some embodiments, the head mounted display system 1000 can include two handheld controllers. The handheld controllers can be substantially identical to each other, and each handheld controller can be actuated by a respective one of the user's hands.

[0712] In some forms, a user may interact with a handheld controller to control and / or interact with virtual objects in a virtual environment.

[0713] In some forms, the handheld controller includes buttons that can be actuatable by the user. For example, the user's fingers can press the buttons while grasping the handheld controller.

[0714] In some forms, the handheld controller may include a directional control (e.g., a joystick, a control pad, etc.) The user's thumb can engage the directional control while grasping the handheld controller.

[0715] In some forms, the controller 1270 can be wirelessly connected to the head mounted display unit 1200. For example, the controller 1270 and the head mounted display unit 1200 can be connected via Bluetooth, Wi-Fi, or any similar means.

[0716] In some forms, the controller 1270 and the head mounted display unit 1200 may be connected using a wired connection.

[0717] 5.2.3.2 Fixed Controller

[0718] In some forms, at least a portion of the controller 1270 may be integrally formed on the display unit housing 1205 .

[0719] In some forms, the controller 1270 may include control buttons integrally formed on the display unit housing 1205. For example, the control buttons may be formed on the upper surface 1230 and / or the lower surface 1232 so as to be engageable by the user's fingers when holding the user's palm against the lateral left or right surface 1234, 1236 of the display unit housing 1205. The control buttons may also be provided on other surfaces of the display unit housing 1205.

[0720] In some forms, a user may interact with the control button to control at least one operation of the head mounted display system 1000. For example, the control button may be an on / off button that selectively controls whether the display screen 1220 outputs an image to the user.

[0721] In some forms, the control buttons and head mounted display unit 1200 may be connected using a wired connection.

[0722] In some forms, head mounted display system 1000 may include both a handheld controller and control buttons.

[0723] 5.2.4 Speakers

[0724] Reference Figure 6 In some forms, the head-mounted display system 1000 includes a sound system or speaker 1272 that can be connected to the head-mounted display unit 1200 and can be positioned proximate to the user's ears to provide auditory output to the user.

[0725] In some forms, speakers 1272 may be positioned around the user's ears and may block or limit the user from hearing ambient noise.

[0726] In some forms, the speaker 1272 can be wirelessly connected to the head mounted display unit 1200. For example, the speaker 1272 and the head mounted display unit 1200 can be connected via Bluetooth, Wi-Fi, or any similar means.

[0727] In some forms, speaker 1272 includes a left ear transducer and a right ear transducer. In some forms, the left and right ear transducers can output different signals so that the volume and / or noise heard by the user in one ear (e.g., the left ear) can be different from the volume and / or noise heard by the user in the other ear (e.g., the right ear).

[0728] In some forms, controller 1270 may be used to control speaker 1272 (eg, the volume of speaker 1272 ).

[0729] 5.2.5 Power supply

[0730] See also Figure 6 Some forms of the head-mounted display system 1000 may include a power supply 1274 that can provide power to the head-mounted display unit 1200 and any other electrical components of the head-mounted display system 1000.

[0731] In some forms, power supply 1274 may include a wired electrical connection that can be coupled to an external power source, which can be fixed to a particular location.

[0732] In some forms, power source 1274 may comprise a portable battery that can provide power to head mounted display unit 1200. A portable battery can allow a user greater mobility than a wired electrical connection.

[0733] In some forms, head mounted display system 1000 and / or other electronic components of head mounted display system 1000 may include internal batteries and may be used without power source 1274.

[0734] In some forms, the head-mounted display system 1000 may include a power supply 1274 in a location remote from the head-mounted display unit 1200. Wires may extend from the remote location to the display unit housing 1205 to electrically connect the power supply 1274 to the head-mounted display unit 1200.

[0735] In some embodiments, the power supply 1274 can be coupled to the positioning and stabilizing structure 1300. For example, the power supply 1274 can be permanently or removably connected to a strap of the positioning and stabilizing structure 1300. The power supply 1274 can be coupled to the rear of the positioning and stabilizing structure 1300 so that it is generally opposite the display unit housing 1205 and / or the head-mounted display unit 1200. Thus, the weight of the power supply 1274, as well as the weight of the head-mounted display unit 1200 and the display unit housing 1205, can be distributed throughout the head-mounted display system 1000, rather than being concentrated at the front of the head-mounted display system 1000. Shifting the weight to the rear of the head-mounted display system 1000 can limit the moments generated on the user's face, which can improve comfort and allow the user to wear the head-mounted display system 1000 for extended periods of time.

[0736] In some embodiments, the power supply 1274 can be supported by the user away from the user's head. For example, the power supply 1274 can be connected to the head-mounted display unit 1200 and / or the display unit housing 1205 only via electrical connections (e.g., wires). The power supply 1274 can be stored in the user's pants pocket, on a belt clip, or similarly supported. This eliminates the need to support weight on the user's head and can make the head-mounted display system 1000 more comfortable for the user.

[0737] In some forms, the head mounted display unit 1200 may include a power source 1274. For example, the display unit 1220 may be a cellular phone or other similar electronic device that includes an internal power source 1274.

[0738] 5.2.6 Control System

[0739] refer to Figure 6 Some versions of the head mounted display system 1000 include a control system 1276 that helps control the output received by the user. Specifically, the control system 1276 can control the visual output from the display screen 1220 and / or the auditory output from the speaker 1272.

[0740] In some forms, control system 1276 may include sensors that monitor various parameters (eg, in a physical environment) and transmit the measured parameters to a processor. The output received by a user may be affected by the measured parameters.

[0741] In some forms, the control system 1276 is integrated into the head mounted display unit 1200. In other forms, the control system 1276 is housed in a control system support 1290 that is separate from but connected to (e.g., electrically connected to) the head mounted display unit 1200.

[0742] 5.2.6.1 Power supply

[0743] In some forms, the control system 1276 may be powered by a power source 1274, which may be at least one battery for powering components of the control system 1276. For example, sensors of the control system 1276 may be powered by the power source 1274.

[0744] In some forms, at least one battery of the power source 1274 may be a low power system battery 1278 and a main battery 1280 .

[0745] In some forms, a low power system battery 1278 may be used to power a real-time (RT) clock 1282 of the control system 1276 .

[0746] 5.2.6.1.1 Integrated power support unit

[0747] In some forms, the battery support 1288 may support the low-power system battery 1278 and / or the main battery 1280. The battery support 1288 may be supported directly on the head mounted display system 1000.

[0748] In some forms, the battery support 1288 may be disposed within the display unit housing 1205 .

[0749] In some embodiments, the battery support 1288 can be disposed on the positioning and stabilizing structure 1300. For example, the battery support 1288 can be connected to the rear support 1350. This allows the weight of the head-mounted display system 1000 to be better balanced around the user's head. One form of the battery support 1288 is a battery pack housing, which will be described in greater detail herein.

[0750] 5.2.6.1.2 Remote power support unit

[0751] In some embodiments, the battery support 1288 can support the low-power system battery 1278 and / or the main battery 1280. The battery support 1288 can be coupled to the user independently of the positioning and stabilizing structure 1300 and / or the display unit housing 1205 (e.g., it can be coupled via a belt clip). The battery support 1288 can also be supported away from the user's body (e.g., if the head-mounted display system 1000 receives power from a computer or video game console). A tether can connect the battery support 1288 to the control system 1276 and / or other electronics. The positioning of the battery support can improve user comfort because the weight of the low-power system battery 1278 and / or the main battery 1280 is not supported by the user's head.

[0752] 5.2.6.2 Orientation Sensor

[0753] In some embodiments, control system 1276 includes an orientation sensor 1284 capable of sensing the user's body orientation. For example, orientation sensor 1284 can sense when a user rotates their body as a whole, and / or their head. In other words, orientation sensor 1284 can measure the angular position of the user's body (or any similar parameter). By sensing the rotation, sensor 1284 can communicate with display screen 1220 to output a different image.

[0754] In some examples, external orientation sensors can be located in the physical environment where the user is wearing head mounted display system 1000. External position sensors can track the user's movements, similar to the orientation sensors 1284 described above. Using external orientation sensors can reduce the weight that the user needs to support.

[0755] 5.2.6.2.1 Camera

[0756] In some forms, the control system 1276 may include at least one camera that may be positioned to observe the user's physical environment.

[0757] In some forms, orientation sensor 1284 is a camera that can be configured to observe the user's physical environment in order to determine the orientation of the user's head (eg, in which direction the user's head has been tilted).

[0758] In some forms, the orientation sensor 1284 comprises multiple cameras positioned throughout the head-mounted display system 1000 to provide a more complete view of the user's physical environment and to more accurately measure the orientation of the user's head.

[0759] In some forms, camera 1284 is coupled to the front face 1238 of the display unit housing 1205. The camera 1284 may be positioned so as to provide a "first person" view.

[0760] In some embodiments, the display screen 1220 may display the user's physical environment using the camera 1284 so that the user can feel as if they are viewing their physical environment without assistance from the head mounted display system 1000 (i.e., a first-person perspective). This may allow the user to move around their physical environment without removing the head mounted display system 1000.

[0761] In one form, virtual objects can be displayed while the display screen 1220 displays the user's physical environment. Camera 1284 can allow the head mounted display system 1000 to operate as an MR device. Control system 1276 can include a controller that switches operation between VR and MR devices.

[0762] 5.2.6.3 Eye Sensor

[0763] In some embodiments, the control system 1276 may include an eye sensor that can track the movement of the user's eyes. For example, the eye sensor can measure the position of at least one eye of the user and determine which direction the at least one eye of the user is looking.

[0764] In some forms, the control system 1276 may include two eye sensors, each corresponding to one eye of the user.

[0765] In some forms, the eye sensor may be positioned in or near lens 1240 .

[0766] In some forms, the eye sensor may measure the angular position of the user's ears in order to determine visual output from the display screen 1220 .

[0767] 5.2.6.4 Processing system

[0768] In some forms, the control system 1276 includes a processing system that can receive amplitude measurements from various sensors of the control system 1276.

[0769] In some embodiments, the processing system may receive measurements recorded by the orientation sensor 1284 and / or the eye sensor. Based on the measurements, the processor may communicate with the display screen 1220 to alter the image being output. For example, if the user's eyes and / or the user's head are pivoted in an upward direction, the display screen 1220 may (e.g., in response to the direction from the processing system) display a more upward portion of the virtual environment.

[0770] 5.3 Augmented Reality Display Interface

[0771] like Figure 5A and 5BAs shown, a display device or head-mounted display system 1000 according to one aspect of the present technology includes the following functional aspects: a display screen 1220 configured for augmented reality, a display unit housing 1205, and a positioning and stabilization structure 1300. In some forms, the functional aspects may be provided by one or more physical components. In some forms, one or more physical components may provide one or more functional aspects. In use, the display screen 1220 is positioned near and in front of a user's eyes to allow the user to view the display screen 1220.

[0772] In other aspects, the head-mounted display system 1000 may also include an interface structure 1100, a controller 1270, a speaker 1272, a power supply 1274, and / or a control system 1276. In some examples, these may be integral pieces of the head-mounted display system 1000, while in other examples, they may be modular and incorporated into the head-mounted display system 1000 as needed by the user.

[0773] 5.4 Positioning and stabilizing the structure

[0774] Figure 7A-20C A positioning and stabilizing structure 1300 and a head-mounted display system 1000 including the positioning and stabilizing structure 1300 are shown. The positioning and stabilizing structure 1300 disclosed herein can be constructed and arranged specifically for use with the head-mounted display system 1000 in VR. However, it should be understood that the positioning and stabilizing structure 1300 and the head-mounted display system 1000 described herein, or individual features thereof, can be applied in any of VR, MR, AR, or other artificial realities. The head-mounted display system 1000 can additionally have any features, configurations, aspects, functionality, etc., as described elsewhere herein.

[0775] Run through Figure 7A-20C The illustrated head-mounted display system 1000 may include a head-mounted display unit 1200 including a display unit housing 1205. The display unit housing 1205 may include a display. The display may be as described elsewhere herein or as known in the art. The head-mounted display unit 1200 may include an interface structure 1100 connected to the display unit housing 1205 and constructed and arranged to engage a user's face during use.

[0776] Figure 7A-20C The positioning and stabilizing structure 1300 shown in is constructed and arranged to maintain the head-mounted display unit 1200 in an operable position on the user's head during use (e.g., such that the display is positioned in a viewing position in front of the user's eyes and such that the interface structure 1100 engages the user's face to form an optical seal, such as in at least the forehead, sphenoid and cheek regions of the user's face).

[0777] The interface structure 1100 may be configured to engage the user's face around the perimeter of the user's eyes during use. The interface structure 1100 may be configured to engage the sides of the user's face lateral to the user's eyes and to engage the user's forehead during use. The interface structure 1100 may engage the user's cheeks, the sides of the user's face, the sides of the user's eyes, and the user's forehead. The interface structure 1100 may engage the user's face in areas covering the user's nose, maxilla, zygomatic bone, sphenoid bone, and frontal bone. For example, the interface structure 1100 may engage the user's face in areas covering the user's nose, maxilla, zygomatic bone, sphenoid bone, and frontal bone. Figure 4D The user's face is engaged in the area shown.

[0778] Reference Figure 7B For example, the interface structure 1100 may include a face engaging flange 1118 that is constructed and arranged to be positioned around the perimeter of the eye area of ​​the user's face and configured to engage the user's face during use. The face engaging flange 1118 may be flexible and elastic. The face engaging flange 1118 may be formed from an elastic material, such as silicone or TPE. In some examples, the interface structure 1100 includes a cushion (not visible in the figures). The cushion may be at least partially covered by the face engaging flange 1118. The cushion may be formed from foam, silicone, gel, or other suitable cushioning material or structure configured to function as a cushion. In some examples, the interface structure 1100 includes a cushion but lacks the face engaging flange 1118.

[0779] The interface structure 1100 can be configured to engage the user's face and resist compression when the head mounted display unit 1200 is securely fastened to the user's face while maintaining user comfort. Padding, if present, can contribute to the resilience of the interface structure 1100. The interface structure 1100 may include: a pair of cheek portions 1140 configured to engage the user's cheeks during use; a forehead portion 1175 configured to engage the user's forehead during use; and a pair of wedge portions 1170 located on respective lateral sides of the interface structure, connected between the forehead portion and the cheek portion, and configured to engage the user's head near the cuneiform bones (see, e.g., Figure 12E ).

[0780] In some examples, interface structure 1100 includes a nose portion 1180 positioned between cheek portions 1140. Nose portion 1180 can be configured to engage a user's nose during use and can be configured to at least partially block light from the user's nose region from reaching the user's eyes (e.g., block light from traveling along a path proximate to a surface of the user's nose). Nose portion 1180 can be configured, for example, to engage a front surface, an upper surface, and / or a side surface of a user's nose during use. Nose portion 1180 can be connected to cheek portions 1140.

[0781] 5.4.1 Lateral and top straps

[0782] Figure 7A shows a positioning and stabilizing structure 1300 according to an example of the present technology, Figure 7B Shown include Figure 7A The head-mounted display system 1000 is shown with a positioning and stabilizing structure 1300. The head-mounted display system 1000 includes a head-mounted display unit 1200, which includes a display unit housing 1205 and an interface structure 1100.

[0783] The positioning and stabilizing structure 1300 in the illustrated example includes a pair of arms 1210 that, during use, are connected (e.g., fixedly attached or removably connected) to respective lateral sides of the display unit housing 1205 (e.g., connected to the housing and / or a pair of lateral support arms on the housing). In the illustrated example, the arms 1210 are semi-rigid and constructed and arranged to project rearwardly from the display unit housing 1205 (e.g., parallel to the lateral support arms along at least a portion of their length) on respective lateral sides of a user's head during use. The front portion of the arms 1210 may include connectors 1208 (e.g., snap-fit ​​connectors) to facilitate removable connection to the display unit housing 1205. The connectors 1208 may be made of a plastic material adhered to the arms 1210 to form a single-piece structure. Each connector may include a flange 1209 to facilitate snap-fit ​​connection to the housing unit. The connectors 1208 are elongated in the direction of the arms 1210 and are arranged to extend rearwardly from the housing unit along the direction of the arms.

[0784] Arms 1210 can be configured to resist bending about one or more axes and, therefore, can be described as rigid or at least semi-rigid (i.e., semi-rigid or rigid). In the illustrated example, each arm 1210 includes a rear portion 1215 comprising an upper arm connection 1211 and a lower arm connection 1212. Arms 1210 can include an outer layer of fabric and can be rigidified to be substantially rigid. In some examples, arms 1210 can include a substantially rigid component covered in a fabric layer (e.g., fabric on both sides or fabric on one side). In some examples, only the user-facing side of the arm includes a fabric layer.

[0785] In some examples, each arm 1210 is at least partially covered by a fabric sleeve. In some specific examples, each arm 1210 is enclosed within a fabric sleeve. Partially or completely covering the arm 1210 can provide comfortable contact between the arm 1210 and the user's head, can be aesthetically pleasing, can provide a comfortable feel, and can hide or protect other components provided to the arm 1210, such as electronics, sensors, transducers, etc., or wiring extending along the arm 1210 to the rear battery pack or any other components.

[0786] The positioning and stabilizing structure 1300 further includes a top strap portion 1340 constructed and arranged to connect between each upper arm connection portion 1211 of the pair of arms 1210 (eg, via the rear legs 1341 of the top strap portion 1340). Figure 7A and 7B In the illustrated example, in addition to each of the upper arm connections 1211 of the pair of arms 1210, the top strap portion is also connected to the head-mounted display unit 1200 (e.g., via the front legs 1342 of the top strap portion 1340). The top strap portion 1340 is configured to apply a force to the head-mounted display unit 1200 in an at least partially upward direction, which advantageously balances at least some of the weight of the head-mounted display unit 1200. The force applied by the top strap portion 1340 may also be applied in a partially rearward direction, which may advantageously help maintain the head-mounted display unit 1200 on the user's face. In the illustrated example, the top strap portion 1340 may be generally Y-shaped. In other examples, the top strap portion 1340 may be connected only between the upper arm connections 1211 and not connected to the head-mounted display unit 1200. In such examples, the top strap portion 1340 may cover the parietal and / or frontal bones of the user's head during use and may be an upper lateral strap portion having any one or more of the features of the upper lateral strap portion described elsewhere herein.

[0787] Top strap portion 1340 can include a textile material. In some examples, top strap portion 1340 can include a fabric outer layer and a foam inner layer. Top strap portion 1340 can include, for example, a fabric-foam laminate.

[0788] like Figure 7B As shown, the positioning and stabilizing structure 1300 also includes an occipital strap 1320, which is constructed and arranged to connect between the lower arm connections 1212 of the arms 1210 during use and engage a portion of the user's head above or below the occipital region of the user's head. The occipital strap 1320 can be tensioned during use and can apply a force to each arm 1210 in at least a partially rearward direction. This force can be transmitted through each arm 1210 to pull the head-mounted display unit 1200 in a partially rearward direction toward the user's face, which can advantageously provide a stable connection between the interface structure 1100 and the user's face. The occipital strap 1320 can include a fabric material. In some examples, the occipital strap 1320 can include an outer fabric layer (on one or both sides) and an inner foam layer. The occipital strap 1320 can include, for example, a fabric-foam laminate.

[0789] The arm 1210 can be pivotally attached to the display unit housing 1205, which can advantageously allow the angle of the head mounted display unit 1200 to be adjusted to suit the user's specific anatomy. Figure 7BAs shown, arm 1210 is pivotable relative to display unit housing 1205 about axis 1203, allowing the display unit housing to rotate relative to arm 1210 in the direction of arrow 1206. Alternatively, as described above, arm 1210 can be attached to a lateral support arm of the display unit housing, and the lateral support arm can be pivotally connected to the rest of the housing (e.g., about the same axis 1203). Thus, when arm 1210 is connected to the lateral support arm of display unit housing 1205, arm 1210 will move as the lateral support arm pivots.

[0790] The top strap portion 1340 can be connected to the head-mounted display unit 1200 at a single location. For example, the single location can be a middle location on the display unit housing 1200. The single location can be aligned with the sagittal plane of the user's head during use. The top strap portion 1340 can be substantially Y-shaped, connecting to two points near the back of the user's head (the upper arm connection portion 1211 of the arm 1210) and one point in front of the user's head (on the head-mounted display unit 1200) during use.

[0791] The top strap portion 1340 can be permanently connected to the upper connection portion 1211 of the arm 1210. For example, the top strap portion 1340 can be sewn, welded (e.g., ultrasonically welded), or glued to the arm 1210 at the upper connection portion 1211, or can be permanently connected by another means (e.g., a permanent snap-fit ​​feature). In other examples, the top strap portion 1340 can be removably connected to the arm 1210, for example, by a magnetic connector or other suitable connector.

[0792] The top strap portion 1340, or a portion thereof, may be selectively adjustable in length (e.g., having a length that can be adjusted by the user as needed, e.g., to achieve a better fit). When attached to the head-mounted display unit 1200, the top strap portion 1340 may be threaded through an eyelet on the head-mounted display unit 1200 and looped back and secured to itself, e.g., via a hook-and-loop connection. The user may then pull more or less of the top strap portion 1340 through the eyelet to adjust the effective length of the top strap portion 1340. Alternatively, the top strap portion 1340 may be looped back after being threaded through the eyelet and secured to itself via another suitable connection (e.g., a slidable buckle) or by attaching to a selected dome or magnetic connection point. The dome may be a protrusion configured to mate with a corresponding structure provided on the portion of the top strap portion 1340 that is looped back to itself.

[0793] like Figure 7A and 7BAs shown, the occipital strap portion 1320 includes an occipital strap connector 1322 at one end of the occipital strap portion 1320 that is constructed and arranged to be releasably connected to a corresponding one of the lower connectors 1212 of the arm 1210. In other examples, the occipital strap portion 1320 can be permanently connected to the arm 1210.

[0794] However, in this particular example, the occipital strap connector 1322 is constructed and arranged to magnetically connect to a corresponding one of the lower connectors 1212. A magnetic connector can be particularly user-friendly. The occipital strap portion 1320 can also be selectively adjustable in length (e.g., having a length that can be adjusted by the user as needed, e.g., to achieve a good fit). The occipital strap portion 1320 can be passed through eyelets on the occipital strap connector 1322 and can be looped back and secured to itself, e.g., via a hook-and-loop connection. The user can then pull the occipital strap portion 1320 more or less through the eyelets to adjust the effective length of the occipital strap portion 1320. Alternatively, the occipital strap portion 1320 can be looped back after passing through the eyelets and secured to itself via another suitable connection, such as a slidable buckle or a connection to one of a series of domes.

[0795] The top strap portion 1340, arms 1210, and occipital strap portion 1320 can together form a loop portion that engages and stably fits against the back surface of the user's head. The ability to adjust the length of the occipital strap portion 1320, for example, in the manner described above, can advantageously allow the user to adjust the effective length / circumference of the loop portion and achieve a good (e.g., stable and comfortable) fit of the loop portion against the back surface of their head.

[0796] The combination of the magnetic connection between the occipital strap connector 1322 and the lower connection portion 1212 of the arm 1210 and the selectively adjustable length of the occipital strap 1320 advantageously provides a set-and-forget adjustment and quick-connect arrangement. A user can adjust the length of the occipital strap 1320 once, then use the magnetic connector to quickly connect and disconnect the occipital strap 1320 during donning and doffing of the head-mounted display system 1000 without having to readjust its length each time. This can be identified as a set-and-forget adjustable releasable connection, whereby the user only needs to make a single adjustment but can quickly release and reconnect the occipital strap 1320 from the arm 1210 during donning and doffing. The quick-connect / quick-disconnect arrangement can also advantageously allow users with long hair (e.g., those with a fringe) to easily don and doff the head-mounted display system 1000 by connecting the occipital strap 1320 underneath their hair, rather than having to place their hair on top of the strap.

[0797] Additionally or alternatively to enabling adjustment of the occipital strap portion 1320, in some examples, one or both of the arms 1210 may be formed as two parts that releasably connect to one another. The two parts of such an arm 1210 may be connected to one another (e.g., magnetically) to provide for quick and easy disconnection and reconnection during donning and doffing of the head-mounted display system 1000. Alternatively or additionally, one or both of the arms may be releasably connected to the head-mounted display system 1000 to provide for quick connection and disconnection during donning and doffing, or to enable the positioning and stabilizing structure 1300 to be separated from the head-mounted display unit 1200 for cleaning, replacement, transport, etc. In another example, the two parts of each arm 1210 may be removably connected to one another. This may provide for size adjustment of the positioning and stabilizing structure 1300. For example, a user with a larger head may be able to adjust the length of the arm 1210 to increase the spacing between the rear portion of the positioning and stabilizing structure 1300 and the head-mounted display unit 1200.

[0798] In some examples, one or both of the lower connectors 1212 can be movable relative to the corresponding arm 1210 to which it is connected. That is, one or both of the lower connectors 1212 can move relative to the rest of the corresponding arm 1210. In some examples, one or both of the lower connectors 1212 can slide relative to the rest of the corresponding arm 1210. The lower connectors 1212 can be selectively adjustable in position relative to other components of the head-mounted display system 1000 (e.g., the head-mounted display unit 1200, the front portion of the arm 1210, or the upper connector 1211). The optimal position of each lower connector 1212 can be close to the ear without contacting it, which can help the occipital strap 1320 engage the head in a low and stable position, which can help prevent the occipital strap from riding up during use. The movable lower connector 1212 can enable each user to position the lower connector 1212 at or near the optimal position for their specific head shape and size.

[0799] The upper connecting portion 1211 and the lower connecting portion 1212 of each arm 1210 can be spaced apart from each other in the vertical direction, such that the lower connecting portion 1212 is closer to the Frankfurt plane of the user's head than the upper connecting portion 1211. The upper connecting portion 1211 can be positioned near the top of the user's head, and the lower connecting portion 1211 can be positioned vertically near eye level of the user's head. In some examples, the lower connecting portion 1211 is configured to be positioned above the supra-auricular base point of the user's head.

[0800] In some examples, the lower connection portion 1212 can be spaced rearwardly from the upper connection portion 1211 in a horizontal direction. In some examples, the upper connection portion 1211 and the lower connection portion 1212 can both be positioned behind the supra-auricular base point of the user's head.

[0801] Each arm 1210 may project rearward and curve upward, away from the display unit housing. In the illustrated example, the lower connecting portion 1212 is approximately level with the connection of the arm 1210 to the display unit housing 1205 along the vertical axis. In one example, each arm 1210 may be narrower at a front position near its connection with the display unit housing 1205 and wider (along the vertical axis) near the upper connecting portion 1211 and the lower connecting portion 1212, so that, during use, the upper connecting portion 1211 is positioned near the top of the user's head (e.g., near the junction between the parietal and frontal bones) and the lower connecting portion 1212 is positioned near the bottom and back of the user's head (e.g., near the occipital bone). In some examples, such as the illustrated example, each arm 1210 widens (e.g., gradually) in a posterior direction (e.g., starting from a position aligned with the coronal plane that intersects each vertex above the user's head).

[0802] Each arm 1210 can also be bent toward the middle to follow the shape of the user's head.Each arm 1210 can protrude rearward away from the display unit housing 1205 and bend toward the middle near the back of the user's head.

[0803] In some examples, each arm 1210 can be configured to resist bending in both the superior and inferior directions, and in some specific examples can be configured to allow bending in the medial direction to engage the rear-facing surface of the user's head. Advantageously, this can allow the arms 1210 to bend inwardly to wrap around or "hug" the user's head during use for a secure and stable fit. The cross-section of each arm 1210 can have a height that is substantially aligned with the superior-inferior direction, the height being greater than the width that is substantially aligned with the medial-lateral direction. The relatively greater height of the arms 1210 in cross-section can provide greater resistance to bending in the superior and inferior directions compared to the resistance to bending in the medial direction provided by the relatively smaller width of the arms 1210.

[0804] In some examples, the height of the cross-section of each arm 1210 can be in the range of 15-30 mm, while the width of the cross-section can be in the range of 2-8 mm. In some specific examples, the height can be 3-10 times the width. The actual dimensions can vary depending on the rigidity of the material used to form the arms 1210 and the specific cross-sectional shape of each arm 1210. More generally, each arm can include greater resistance to bending in the up and down directions than bending in the middle direction. Advantageously, the high rigidity for bending in the up and down directions can allow the arms 1210 to support some of the weight of the head mounted display unit 1200, while the low rigidity for bending in the middle allows the arms 1210 to conform to the curvature of the user's head.

[0805] In some examples, each arm 1210 includes one or more hinges to facilitate bending the corresponding arm to conform to the shape of the user's head. Such hinges can be formed by thinning portions of the arm 1210 and can function in addition to bending of the non-hinge portion of the arm 1210.

[0806] In some examples, when the top strap portion 1340 is in a tensioned state, for example due to the weight of the head mounted display unit 1200 and / or the user shortening the top strap portion 1340, the upper connection portion 1211 is pushed toward the surface of the user's head. The top strap portion 1340 can partially pull the upper connection portion 1211 toward the surface of the user's head and, in some examples, engage with the user's head. Alternatively, if the upper connection portion 1211 is already in contact with the user's head, the top strap portion 1340 can increase the force pulling the upper connection portion 1211 toward the user's head to provide a secure and stable fit.

[0807] Similarly, in some examples, when the occipital strap 1320 is in tension, for example, when the occipital strap 1320 is tightened, the lower connection portion 1212 can be pushed toward the surface of the user's head. The occipital strap 1320 can partially pull the lower connection portion 1212 toward the surface of the user's head and, in some examples, engage the user's head, or, if the lower connection portion 1212 is already in contact with the user's head, the occipital strap 1320 can increase the force pulling the lower connection portion 1211 against the user's head to provide a secure and stable fit.

[0808] In some examples, the occipital girdle 1320 may be larger than Figure 7A and 7B (The width is the length of a line or curve in the sagittal plane of the user's head created by the occipital strap 1320 intersecting the sagittal plane when the user is wearing the head mounted display system 1000.) A wider occipital strap 1320 can provide less pressure on the user's head than a narrower occipital strap 1320 due to the larger surface area of ​​the user's head being engaged. In some examples, the occipital strap 1320 can be in the range of 25-50 mm wide, such as in the range of 30-40 mm wide, for example, 35 mm wide.

[0809] In other examples of the present technology, some or all portions of the positioning and stabilizing structure 1300 can include materials other than or in addition to fabric or fabric and foam. In some examples, some or all of the strap portions can include silicone, rigid plastic, foam, leather, or other suitable materials.

[0810] 5.4.2 Annular belt

[0811] Figure 8A-9 Other examples of head-mounted display systems are shown. Figure 8A and8B A head mounted display system 1000 is shown, which includes a head mounted display unit 1200, which may be as described in reference Figures 7A-7B The head mounted display unit 1200 may include a display unit housing 1205 including a display, and an interface structure 1100 connected to the display unit housing 1205 and constructed and arranged to engage a user's face in use.

[0812] like Figures 8A-8B As shown, the positioning and stabilizing structure 1300 includes a cuff portion 1360. In the depicted example, the cuff portion 1360 is constructed and arranged to be positioned along a path around a superior and posterior region of a user's head, which may be referred to as the crown of the user's head. The cuff portion 1360 may be positioned along a path around an upper region of the user's head (e.g., covering the parietal bones proximal to the frontal bones), a side and posterior region of the user's head (e.g., covering the parietal bones proximal to the temporal bones), and a posterior region of the user's head (e.g., covering the occipital bone or covering the parietal bones proximal to the occipital bone).

[0813] The loop portion 1360 may surround the upper back area of ​​the user's head, for example Figure 8B As shown. The loop portion 1360 can be located, for example, on a continuously / steadily curved path without discrete / abrupt changes in direction. In some examples, the loop portion 1360 can be semi-rigid and / or can be configured to substantially maintain the in-use shape when the head-mounted display system 1000 is not being worn by a user. The loop portion 1360 can be configured to maintain at least a partially circular shape when not being worn by a user, rather than being completely loose / floppy. The loop portion 1360, and in some examples, substantially all of the positioning and stabilizing structure 1300 (e.g., the loop portion 1360 and the lateral strap portions 1330) can be at least sufficiently rigid (e.g., at least semi-rigid) to maintain the in-use shape when not in use, and optionally can be sufficiently flexible to deform from the in-use shape under intentional finger pressure alone.

[0814] The cuff portion 1360 can be semi-rigid and formed from a textile and foam laminate (e.g., textile-covered foam), wherein the foam has increased rigidity compared to the textile and thus imparts rigidity to the cuff portion 1360. Alternatively, the cuff portion 1360 can have rigidity imparted by rigidifiers disposed within the cuff portion 1360 or on the surface of the cuff portion 1360. Such rigidifiers can have increased rigidity compared to the other materials of the cuff portion, thereby imparting rigidity to the cuff portion. As described elsewhere in this application, other cuff portions can be provided with rigidifiers. In some examples, the rigidifiers can be formed from a plastic material (e.g., a thermoplastic material) or other suitable material. In some instances, the rigidifiers are formed from nylon.

[0815] The loop-belt portion 1360 can be configured to be anchored in place against the upper rear region of the user's head so that the loop-belt portion 1360 remains in place during use and is substantially in the shape of use during use. Because the upper rear region is convex and the loop-belt portion 1360 engages the user's head around the convex surface portion, when the other bands of the loop-belt portion 1360 positioning and stabilizing structure 1300 are pulled against the upper rear portion, the loop-belt portion 1360 can become substantially immobile, thereby providing the stable engagement of the loop-belt portion 1360 to the user's head. In some examples, the loop-belt portion 1360 can include a small amount of elastic ductility. A small amount of stretching can advantageously help the loop-belt portion 1360 to fit snugly and securely to the user's head, although excessive stretching can cause excessive force applied to the user's head and / or can cause instability or movement of the positioning and stabilizing structure 1300 in use.

[0816] In other examples, the annular strap portion 1360 can be substantially inextensible. In some examples, the lateral strap portions 1330 can be substantially inextensible. In other examples, the lateral strap portions 1330 can include at least a semi-rigid and / or substantially inextensible portion and other portions that are elastic (e.g., relatively more elastic than the semi-rigid / inextensible portion).

[0817] exist Figure 8A and 8B In the example shown, the loop portion 1360 forms an upper transverse strap portion 1370 that is constructed and arranged to engage an upper region of the user's head at or near a coronal plane aligned with the supra-auricular base of the user's head. The loop portion 1360 also includes an occipital strap portion 1320 that is constructed and arranged to engage an area of ​​the user's head that covers the occipital bone or the parietal bone adjacent to the occipital bone.

[0818] The positioning and stabilizing structure 1300 in the illustrated example also includes a pair of lateral strap portions 1330 connected to the loop strap portion 1360, which are constructed and arranged to be connected to corresponding lateral sides of the head mounted display unit 1200. The lateral strap portions 1330 can be placed in a tensioned state during use, which pulls the head mounted display unit 1200 toward the user's face and pulls the loop strap portion 1360 toward the upper rear region of the user's head, which causes the loop strap portion 1360 to be substantially fixed in place due to the convex shape of the surface of the user's head at the upper rear region.

[0819] The positioning and stabilizing structure 1300 can be configured to partially resist angular changes between the upper transverse strap portion 1370 and the occipital strap portion 1320 when the lateral strap portion 1330 is in a tensioned state. For example, the junction between the upper transverse strap portion 1370 and the occipital strap portion 1320 can be formed to have sufficient rigidity to resist angular changes between the path of the upper transverse strap portion 1370 and the path of the occipital strap portion 1320 approaching the junction. This rigidity can be provided by material thickness or by the addition of rigidifying components (e.g., rigidizers), as examples. The connection between the upper transverse strap portion 1370 and the occipital strap portion 1320 can be seamless. For example, the upper transverse strap portion 1370 and the occipital strap portion 1320 can be integrally formed, at least at the junction (although they can be formed as segments elsewhere around the annular strap portion 1360). This can help distribute the tension in the lateral strap portions 1330 as a whole around the annular strap portion 1360, and can advantageously allow the annular strap portion 1360 to resist deformation and / or stretching due to the transfer of tension from the lateral strap portions 1330, and support some of the weight of the head mounted display unit 1200 while maintaining comfort.

[0820] Other examples where the upper rear strap is free to move relative to the lower rear strap while being height adjustable may rely on higher forces exerted on the user's head directly below the strap to counteract tension in the lateral side straps. Figure 8A and 8B The cuff portion 1360 in the example shown may distribute forces around the cuff portion 1360 in a "hoop stress" manner, which may be found more comfortable to the user.

[0821] exist Figure 8A and 8B In the example shown, the lateral straps 1330 support at least some of the weight of the head-mounted display unit 1200 and can transfer some of the weight as a whole to the upper transverse strap 1370 and / or the annular strap 1360. In particular, the annular strap 1360 can support at least a majority of the weight of the head-mounted display unit 1200 via the lateral straps 1330. In some examples, the lateral straps 1330 and the upper transverse strap 1370 can support at least a majority of the weight of the head-mounted display unit 1200.

[0822] The lateral strap portions 1330 and the upper transverse strap portion 1370 can support the weight of the head-mounted display unit 1200 by pulling the head-mounted display unit 1200 snugly against the user's face, such that the upward component of the static friction force and the normal force exerted by the user's face on the head-mounted display unit 1200 offsets the weight of the head-mounted display unit 1200. Additionally or alternatively, the lateral strap portions 1330, as part of the annular strap portion 1360 and anchored by their connection to the upper transverse strap portion 1370, can apply a partially upwardly directed force to the head-mounted display unit 1200 to offset at least some of the weight of the head-mounted display unit 1200. Each of the lateral strap portions 1330 can extend at least partially upward away from its corresponding connection portion with the head-mounted display unit 1200. For example, the rear end of the lateral strap portion 1330 (e.g., at the connection location 1333 with the annular strap portion 1360) can be positioned above the front end of the lateral strap portion (e.g., at the connection point with the head mounted display unit or arm 1210). This can result in tension in the lateral strap portion 1330 having a vertically upward (e.g., upward) component to offset some of the weight.

[0823] In some examples, lateral strap portions 1330 are connected to annulus portion 1360 between (eg, substantially in the middle of) an uppermost portion of annulus portion 1360 and a lowermost portion of annulus portion 1360. Figure 8G In the example shown in FIG, the lateral strap portions 1330 are connected near but above the lateral midpoint of the loop portion 1360. The lateral strap portions 1330 can be positioned so as not to contact the user's ears, but can be connected to the loop portion 1360 near the user's ears. In some specific examples, the lateral strap portions 1330 can include rigid members provided to the lateral strap portions 1330 that extend rearwardly past the user's ears, optionally extending into the occipital strap portion, during use. Figures 8F-8I An example is discussed in which the annular girdle portion 1360 includes an upper segment 1360a, a pair of lateral segments 1360b, and a lower segment 1360c.

[0824] In some examples, the positioning and stabilizing structure 1300 includes semi-rigid portions (e.g., including rigid members) in the lateral strap portions 1330 and in portions of the lateral segments 1360b that, in use, are below the lateral strap portions 1330. The positioning and stabilizing structure 1300 can include a pair of rigid members, each extending within a respective lateral strap portion 1330 and into a respective one of the portions of the lateral segments 1360b below the lateral strap portions 1330. In some examples, the lateral strap portions 1330 are semi-rigid.

[0825] In reference Figure 8F-1In an example, lateral strap portion 1330 may include a layered arrangement comprising an inner (user contacting) layer 1353 (e.g., a fabric material), a cushioning layer 1358 (e.g., foam, gel), a rigidizer layer 1359 (e.g., a plastic, thermoplastic rigidizer layer), and an outer layer 1352 (e.g., a fabric material). In an example, the inner and outer fabric layers may be fabric sleeves (e.g., a tubular knit fabric). In other examples, the cushioning layer may be omitted. It should be understood that the layered structure described herein may be used with any other strap portion described elsewhere in this application as being rigidized or having a rigidized structure.

[0826] The length of each of the lateral straps 1330 is selectively adjustable (e.g., having a length that can be adjusted by the user as needed, e.g., to achieve a good fit). Each of the lateral straps 1330 can be threaded through a corresponding eyelet on the head-mounted display unit 1200 and can be looped back and secured to itself, for example, via a hook-and-loop connection. In other examples, the arm including the eyelet can be part of the positioning and stabilizing structure 1300 and configured to attach to the display unit housing 1205. The user can then pull the lateral strap 1330 through the eyelet more or less to adjust the effective length of the lateral strap 1330. Alternatively, each of the lateral straps 1330 can be looped back after being threaded through the eyelet and can be secured to itself via another suitable connection, such as a slidable buckle or a connection to one of a series of domes.

[0827] exist Figure 8B In the illustrated example, the head-mounted display unit 1200 includes a pair of arms 1210 extending rearwardly from respective lateral sides of the display unit housing 1205. In other examples, the arms 1210 may be part of the positioning and stabilizing structure 1300 and configured to be attached to the display unit housing 1205. It will be appreciated that the arms 1210 in any of the other illustrated examples herein may be formed as part of the head-mounted display housing, or alternatively, may be formed as part of a positioning and stabilizing structure configured to be attached to the display unit housing. Lateral straps 1330 are each connected to a respective one of the arms 1210. In this particular example, each lateral strap 1330 is threaded through a respective guide 1213 located near the rear end of the respective arm 1210, then through an eyelet near the front end of the arm 1210, and then looped back and secured to itself.

[0828] The arm 1210 can be pivotally attached to the display unit housing 1205, which can advantageously allow the angle of the head mounted display unit 1200 to be adjusted to fit the user's specific anatomy. The arm 1210 can be substantially rigid. For example, the arm 1210 can be formed from a rigid plastic material.

[0829] As described above, in some examples, the lateral straps 1330 exert a force having an upward component on the head mounted display unit 1200. Figure 8B As shown, when the user wears the head-mounted display system 1000, the side strap portions 1330 can be connected to the ring strap portion 1360 at respective connection locations 1333, which are spaced upward from the arms 1210 (e.g., at the connection points of the arms to the head-mounted display unit). The connection locations 1333 can also be spaced upward relative to the user's eyes during use. With this arrangement, when tightened during use, the side strap portions 1330 can pull the head-mounted display unit 1200 backward to engage the user's face, and partially pull upward to absorb some of the weight of the head-mounted display unit 1200, which can provide a comfortable fit.

[0830] In the particular embodiment, the positioning and stabilizing structure 1300 further includes a top strap portion 1340. The top strap portion 1340 is connected to the upper lateral strap portion 1370 and is constructed and arranged to be connected to the head mounted display unit, for example, at a single location. The top strap portion 1340 can be aligned with the sagittal plane of the user's head during use and can apply a partial rearward and partial upward force to the head mounted display unit 1200 to pull the head mounted display unit into engagement with the user's face during use and support some of the weight of the head mounted display unit 1200, thereby providing a stable and comfortable fit. The top strap portion 1340 can refer to Figures 7A-7B Or as described elsewhere herein (e.g., by looping through an eyelet and securing to itself with a hook and loop or other suitable connection) to selectively adjust the length.

[0831] In some examples, top strap portion 1340 is substantially non-rigid, such as soft, floppy, etc. In some examples, top strap portion 1340 is semi-rigid. In some examples, top strap portion 1340 can be flexible, and in some examples, can include a less rigidity than upper transverse strap portion 1370, lateral strap portion 1330, and / or occipital strap portion 1320. It should be understood that top strap portion 1340 is optional.

[0832] Figure 8E Shows something like Figure 8A and 8BAnother example of a head-mounted display system 1000 is shown. In this particular example, the top strap portion 1340 is connected to the occipital strap portion 1320 rather than to the upper lateral strap portion 1370. This can more evenly distribute the weight of the head-mounted display unit 1200 along the length of the top strap portion 1340, and therefore more evenly distribute the weight of the head-mounted display unit 1200 over a larger area of ​​the user's head, which can enhance comfort. Additionally, the connection of the top strap portion 1340 to the occipital strap portion 1320 provides a connection location at a lower point on the user's head, which can provide a more stable anchor for the top strap portion because, when force from the top strap portion 1340 is applied to the occipital strap portion 1320, the curved shape at the occipital portion can help the occipital strap portion stably engage and support the user's head, rather than tending to slide up or ride on the user's head.

[0833] Another difference is that in the particular example, the upper transverse strap portion 1370 is positioned proximate to a coronal plane aligned with each of the supra-auricular base points of the user's head, but spaced a short distance posteriorly from the coronal plane. However, the upper transverse strap portion 1370 can still be aligned with the user's ears in the front-to-back direction. In the example, the upper transverse strap portion 1370, the occipital strap portion 1320, and the lateral strap portion 1330 can be integrally formed. The upper transverse strap portion 1370 and the occipital strap portion 1320 form an annular strap portion 1360. The annular strap portion 1360 can be semi-rigid. The annular strap portion 1360 can be configured to substantially maintain the shape it is in when the head-mounted display system 1000 is not being worn by the user.

[0834] The cuff portion 1360 can be semi-rigid and formed from a textile and foam laminate (e.g., textile-covered foam), wherein the foam has increased rigidity compared to the textile and thus imparts rigidity to the cuff portion 1360. Alternatively, the cuff portion 1360 can be imparted with rigidity by a rigidifier disposed within or on a surface of the cuff portion 1360. Such a rigidifier can have increased rigidity compared to the other materials of the cuff portion, thereby imparting rigidity to the cuff portion. In some examples, the rigidifier can be formed from a plastic material (e.g., a thermoplastic material). In some instances, the rigidifier is formed from nylon.

[0835] In some examples, the positioning and stabilizing structure 1300 does not include the top strap portion 1340 .

[0836] Figures 8F-8H Shown with Figure 8A and 8B Another example of a positioning and stabilizing structure 1300 having similar components to the positioning and stabilizing structure 1300 shown in FIG. For example, the positioning and stabilizing structure 1300 includes a lateral strap portion 1330, an annular strap portion 1360 including an upper transverse strap portion 1370 and an occipital strap portion 1320, and a top strap portion 1340. The components may be as described with reference to FIG. Figures 8A-8B is as described and can function in the same manner.

[0837] exist Figures 8F-8H , a positioning and stabilizing structure 1300 is shown in which the arms 1210 of the head mounted display unit 1200 are attached to the lateral straps 1330. In other examples, the arms 1210 can be part of the positioning and stabilizing structure 1300 and configured to be attached to the display unit housing 1205. Figure 8M Each arm 1210 may include one or more guides 1213a, 1213b configured to guide or at least help retain the corresponding lateral strap portion 1330 in place. Figure 8M Each arm 1210 may include a rear guide 1213a and a front guide 1213b. Each lateral strap portion 1330 may be threaded through the rear guide 1213a, then through the front guide 1213b, and then looped and secured to itself, for example, via a hook-and-loop connection. The ends of each lateral strap portion 1330 may include a break-loop material configured to form a hook-and-loop connection with the non-user-facing side of the lateral strap portion 1330. The break-loop material may be adhered or welded to the ends of each lateral strap portion 1330. To adjust the effective length of the lateral strap portion 1330 (e.g., by moving the arm 1210 closer to or further away from the loop strap portion 1360), a greater or lesser portion of each lateral strap portion 1330 may be pulled through the guides 1213 before looping and securing itself.

[0838] In an example, each arm may be formed from a plastic material such as polycarbonate or ABS, or any other suitable material.

[0839] exist Figures 8F-8H In the example shown, the arm 1210 can be of sufficient length to facilitate stability of the head mounted display system and to effectively transfer some of the weight of the head mounted display unit 1200 to the ring band portion 1360. The arm 1210 extends rearward from its connection point on the head mounted display unit 1200 to a position near and / or behind the rearmost portion of the head mounted display unit 1200 and the interface structure 1100 (see FIG. Figure 8C and 8E Arm 1210 in a similar arrangement).

[0840] Additionally, in this particular example, each arm 1210 includes the aforementioned rear guide 1213a, which is positioned near the distal end of the arm 1210. This feature keeps the length of the lateral strap portion 1330 (e.g., the pivot arm length) short between the loop portion 1360 and the end of the arm 1210, allowing the weight of the head-mounted display unit to be transferred to the loop portion 1360. The rigid arms 1210 help transfer the weight of the head-mounted display unit 1200 to the loop portion 1360. This can advantageously provide a stable fit, particularly during vigorous use of the head-mounted display system 1000.

[0841] Different belt portions may have different widths. Figures 8F-8H In the examples shown in FIG8I , the width of the occipital strap portion 1320, measured transversely to its length, is greater than the width of the upper transverse strap portion 1370, measured transversely to its length. The greater width of the occipital strap portion 1320 results in forces acting on the user's head being applied over a larger surface area, thereby resulting in less pressure on the user's head. In examples where the occipital strap portion 1320 has a greater width than the upper transverse strap portion 1370, the occipital strap portion 1320 can have a lower pressure-to-force ratio than the upper transverse strap portion 1370. In some examples, the width of the occipital strap portion 1320 can be in the range of 30 mm to 50 mm, e.g., 35 mm to 45 mm, e.g., 37 mm to 42 mm, or 38 mm. In some examples, the width of the upper transverse strap portion 1370 can be in the range of 20 mm to 40 mm, e.g., 25 mm to 35 mm, e.g., 28 mm to 33 mm, or 31 mm.

[0842] Different belt parts can have different thicknesses. Figures 8F-8H In the example shown, the thickness of the annular band portion 1360 is greater than the thickness of the lateral band portions 1330. In this particular example, the thickness of the annular band portion 1360 is greater than the thickness of the top band portion 1340. In some examples, the thickness of the annular band portion 1360 may be in the range of 6-10 mm, for example, 7-9 mm, such as 8 mm. The thickness of either or each of the lateral band portions 1330 and the top band portion 1340 may be in the range of 2-6 mm, for example, 3-5 mm, such as 4 mm. In other examples, the top band portion 1340 may have a thickness in the range of 2-4 mm, for example, 2.5-3 mm, such as 2.7 mm.

[0843] therefore, Figures 8G-8HThe positioning and stabilizing structure 1300 in the example shown includes a strap portion having a large thickness and width, which can advantageously provide a high degree of comfort and / or can provide space for components within the strap portion, such as electronic devices, sensors, transducers, cables, batteries, rigid members, counterweights, etc. The strap portion can be formed from multiple layers, for example forming a laminate structure. The large thickness also helps the annular strap portion 1360 to maintain its shape. Although the length of the annular strap portion 1360 and the lateral strap portions 1330 may not be particularly extensible, and although the annular strap portion 1360 may be sufficiently rigid so that it maintains its shape when not in use, the positioning and stabilizing structure 1300 can be sufficiently flexible so that in some specific examples, it can be worn by a user without disconnecting any strap portion from the other strap portions or the head-mounted display unit 1200. For example, having Figures 8A-8B or Figures 8F-8H The head mounted display system 1000 of the illustrated positioning and stabilizing structure 1300 can be worn by a user by pulling and / or stretching it over their head, for example in the same way they would put on a baseball cap.

[0844] Figure 8K and 8L Shown are cross sections of two example loop strap portions 1360. The cross sections may alternatively be applied to other strap portions, such as lateral strap portions 1330 or top strap portion 1340, or any other strap portion of the examples of positioning and stabilizing structure 1300 disclosed herein.

[0845] exist Figure 8K In one example, the looped strap portion 1360 includes an inner layer 1360 (2) which may provide most or substantially all of the thickness of the strap and which may be formed of foam, spacer fabric, or the like. The inner layer may be covered by a user-facing layer 1360 (1) configured to engage the user's head and a non-user-facing layer 1360 (3) configured to face away from the user's head. For example, the layers may be formed of a textile material. The user-facing layer and the non-user-facing layer may be welded (e.g., RF or ultrasonic) at their edges to encapsulate the inner layer. In one example, the strap has a total thickness of 8 mm.

[0846] exist Figure 8L In the example of FIG. 1 , the annular band portion 1360 comprises two laminates joined at the edges. Each laminate may be of Figure 8K, but having half the width of the entire strap (e.g. each laminate may have a thickness of 4 mm to produce a looped strap portion 1360 having a thickness of 8 mm. In some examples, each of the two laminates forming the strap portion may include an inner layer 1360 (2) formed of foam, spacer fabric, or the like, and may include a single outer layer facing outwardly relative to the strap. For example, one laminate may include a single user-facing layer 1360 (1) and an inner layer 1360 (2). The other laminate may include a single non-user-facing layer 1360 (3) and an inner layer 1360 (2). For example, the user-facing layer and the non-user-facing layer may be formed of a textile material. The two laminates may be joined at the edges (e.g. by welding), but may not be joined in the middle, leaving a space 1360 (4) for cables, electronics, rigidizers, or any other suitable and desired components to be provided. In some examples, a flat cable, such as a ribbon cable or a cable having a flat cross-section, may be provided between the two layers forming the strap portion of the positioning and stabilizing structure 1300.

[0847] In some examples, the entire positioning and stabilizing structure 1300 is formed from machine-washable components, such that the positioning and stabilizing structure 1300 can be separated from the head-mounted display unit 1200 and washed in a washing machine, or at least easily hand-washed without risk of damaging electronic components or components that cannot withstand water. This can provide a hygienic positioning and stabilizing structure 1300. Figures 8A-8H Another advantage of the loop portion 1360 shown in the various examples shown is that the loop portion 1360 provides a large opening for the user's hair (e.g., a bun, ponytail, or long hair). The positioning and stabilizing structure 1300 can be flexible enough to bend and / or stretch comfortably over a bun or ponytail during donning / setup, and can then engage the user's head without interfering with the bun, ponytail, long hair, or other hair features.

[0848] In some examples of the present technology, the cuff portion 1360 includes multiple segments that are formed separately and connected together to form the cuff portion 1360. The segments may or may not directly correspond to the upper transverse girdle portion 1370 and the occipital girdle portion 1320. In some examples, the cuff portion 1360 may include two segments. In other examples, the cuff portion 1360 may include three, four, five, six, seven, or more segments.

[0849] like Figures 8F-8H As shown in Figures 8I, in this particular example, the annular band portion includes an upper segment 1360a, a pair of lateral segments 1360b, and a lower segment 1360c. The top band portion 1340 can extend from the upper segment 1360a, and the lateral band portions 1330 can extend from the corresponding lateral segments 1360b. Figure 8IThe positioning and stabilizing structure 1300 is shown in a flattened form, with the occipital girdle portion 1320 divided into two sections, with the sections and joint locations shown (but without showing the actual joint, e.g., sutures). In some examples, the lower section 1360c comprises greater elasticity (e.g., less rigidity in extension) than the lateral sections 1360b and / or the upper section 1360a. In other examples, the upper section 1360a comprises greater elasticity than the lower section 1360c and / or the lateral sections 1360b. In yet another example, the lateral section 1360b comprises greater elasticity than the upper section 1360a and / or the lower section 1360c.

[0850] In some examples, the cuff portion 1360 includes a counterweight attached thereto. In certain examples where the cuff portion 1360 includes a lower segment 1360c, the lower segment 1360c may include or form a counterweight, for example, by adding additional material for weight or by mounting additional components thereto, such as a battery pack. Providing a counterweight to the lower segment 1360c advantageously enables the counterweight to be positioned near the user's neck. Providing a counterweight near the vertical axis of rotation of the user's head, for example, at the neck rather than at the rearmost position of the rounded posterior surface of the user's head, can limit the increase in the moment of inertia of the head-mounted display system 1000 caused by the counterweight being positioned near the axis of rotation. A low moment of inertia may be advantageous during periods of vigorous head movement during use. In some examples, the head-mounted display system 1000 may include two counterweights. These two counterweights may be provided to the occipital strap portion 1320 but may be symmetrically spaced across the sagittal plane. In some examples, the two weights can be provided to the corresponding lower ends of the lateral segments 1360b, for example, near the lower segment 1360c. In this arrangement, the occipital girdle 1320 can include elasticity proximate to the sagittal plane.

[0851] Advantageously, forming the cuff portion 1360 into segments can provide the cuff portion 1360 with a certain amount of flexibility to conform to the shape of the user's head, as the joints between the segments can act as hinges. The cuff portion 1360 can otherwise be formed to be somewhat rigid, substantially supporting itself in its in-use shape when not being worn by the user. The joints between the segments can also advantageously provide a cooling effect. The joints between the segments, and optionally the joints between the segments and other strap portions (e.g., the top strap portion 1340 and / or the side strap portions 1330), can be stitched, welded, glued, or the like. Figures 8F-8H In the example shown, the segments and the strap portions are sewn together.

[0852] Furthermore, in this particular example, hinges 1361 may be formed around the joint between top strap portion 1340 and hoop strap portion 1360 , as well as around each of the joints between lateral strap portions 1330 and hoop strap portions 1360 . Figure 8JA detailed view of hinges 1361 near the side straps 1330 is shown. In the illustrated example, hinges 1361 are created by a welding operation that heats and shrinks the strap near the joint. Each hinge 1361 can provide additional flexibility to the loop strap 1360 near its connection to the corresponding one of the side straps 1330 and top strap 1340. Hinges 1361 are particularly advantageous near the side straps 1330, as the side straps 1330 may need to accommodate relatively complex geometric changes to connect between the arms 1210 and the loop strap 1340. Furthermore, the hinges connecting the side straps 1360 can aid in positioning and stabilizing the structure when fitting different head sizes by allowing the side straps to pivot relative to the loop strap to adjust to the user's head size. Hinges 1361 can also help the top strap 1340 accommodate geometric changes, although in other examples, hinges may be absent near the top strap 1340.

[0853] exist Figure 8K In the examples of FIG8L or 8L, or in any other examples where the cuff portion 1360 includes a fabric outer layer, the fabric can be formed by knitting. The cuff portion 1360 can include a fabric outer layer having stitching that substantially does not allow elastic extension (e.g., stretch) adjacent to the lateral strap portions 1330, but allows at least some elastic extension at other locations around the cuff portion 1360 (e.g., at upper and / or lower locations). The fabric material can be nylon, polyester, or any other suitable material.

[0854] In some examples, the lateral segments 1360b of the cuff portion 1360 may include one or more fabric layers having stitching that substantially does not allow for stretching. However, the upper segment 1360a and / or the lower segment 1360c may include one or more fabric layers that allow for at least some elastic extension. In some examples, the entire cuff portion 1360 may include one or more fabric layers formed with stitching that allows for stretching in one direction but not in a perpendicular direction. In such examples, the stitching may be aligned so that the stretchable direction is substantially perpendicular to the length of the cuff portion 1360 adjacent to the lateral strap portions 1330, but substantially parallel to the length of the cuff portion 1360 at the upper and / or lower positions around the cuff portion 1360, to allow for stretching in the cuff portion 1360, but not adjacent to the lateral strap portions 1330, which may advantageously promote a stable fit.

[0855] In other examples, the entire annulus portion 1360 may be formed as a single segment, such as a single-piece, unitary construction.

[0856] Figure 8C and 8D Shows something like Figure 8A and 8BAnother example of a head-mounted display system 1000 is shown. In this example, the positioning and stabilizing structure 1300 does not include a top strap portion 1340. The absence of the top strap portion 1340 may provide advantages such as the positioning and stabilizing structure 1300 being easier and / or more comfortable for use by users with extensive hair and / or being less disruptive to the user's hair. Another difference is that in this example, the loop portion 1360 is wider in the upper lateral strap portion 1370 at a location that intersects the sagittal plane of the user's head (e.g., above and in the middle) than at other locations around the loop portion 1360 (e.g., lateral or posterior and in the middle).

[0857] For example, the upper transverse band 1370 comprises a greater width at the location where it intersects the sagittal plane than at the lateral portions of the upper transverse band 1370, and a greater width than at the occipital band 1320. The extent to which the upper transverse band 1370 is wider than the rest of the annular band 1360 can vary. Figure 8C An example is shown in which the upper transverse band 1370 is particularly wide near the radial plane, while Figure 8D An example is shown in which the upper transverse band portion 1370 is smaller in width but still wider than the rest of the annular band portion 1360. Figure 8C and 8D As shown, the annular band portion 1360 may have a width that gradually increases toward the upper transverse band portion 1370 (eg, the width may gradually increase from the occipital band portion 1320 to the upper transverse band portion 1370 ).

[0858] exist Figure 8C and 8D In both examples shown, the head mounted display unit 1200 includes an arm 1210 that projects rearwardly from the display unit housing 1205, and the positioning and stabilizing structure 1300 includes a lateral strap 1330 connected to the arm 1210. In other examples, the arm 1210 can be part of the positioning and stabilizing structure 1300 and configured to be attached to the display unit housing 1205. Figure 8C In the example shown, the lateral strap portions 1330 decrease in width along their length from the annular strap portion 1360 toward the arms 1210. This creates a relatively wider and therefore more stable connection area with the annular strap portion. Figure 8D In the example shown, the lateral strips 1330 have a substantially constant width. Figure 8D In the example shown, the lateral strap portion 1330 bends upwardly away from the arm 1210 so as to connect to the annular strap portion 1360 at a position higher than the arm 1210 during use. Figures 8A-8B Or selectively adjust the length as described elsewhere herein.

[0859] In other examples, Figure 8C and 8DThe positioning and stabilizing structure 1300 shown in FIG may include a top strap portion 1340, such as substantially as described in reference Figures 8A-8B or as described elsewhere herein.

[0860] Figure 8C and 8D The loop portion 1360 in the embodiment may be semi-rigid and / or configured to substantially maintain its in-use shape when not being worn by a user, and may be, for example, Figures 8A-8B Or as described in 8E.

[0861] Figure 9 Shows something like Figure 8C and 8D Another example of a positioning and stabilizing structure 1300 is shown. In this example, the annular strap portion 1360 includes a greater width in the upper transverse strap portion 1370 near the sagittal plane of the user's head (e.g., at a medial position) than at lateral positions, such as near the occipital strap portion 1320. The upper transverse strap portion 1370 includes a front edge and a rear edge. In this particular example, the front edge is more curved than the rear edge, resulting in a greater width at a medial position along the upper transverse strap portion 1370. The front edge curves forward in a lateral to medial direction. More specifically, the front edge first curves forward in a lateral to medial direction and then curves backward in a medial direction near the sagittal plane of the user's head to form a rounded front edge. Thus, the front edge curves forward from a relatively more lateral portion toward the medial portion of the upper transverse strap portion 1370. In this way, the medial portion of the upper transverse strap portion, which is configured to engage at least near the sagittal plane of the user's head, can form the anteriormost portion of the upper transverse strap portion. In another example, upper transverse strap portion 1370 may again bend forward adjacent to lateral strap portion 1330 to form a wider strap at the connection area with the lateral strap portion. The rear edge may not be substantially curved forward or backward. The difference in curvature between the front and rear edges may form a wider middle portion of upper transverse strap portion 1370.

[0862] In some cases, such as Figure 8A-9 In the example shown, upper transverse strap portion 1370 and occipital strap portion 1320 are integrally formed. For example, in some examples, annular strap portion 1360 may include a seamless strap that forms upper transverse strap portion 1370 and occipital strap portion 1320. Lateral strap portion 1330 and / or top strap portion 1340 may then be attached to the annular strap portion by sewing, welding (e.g., ultrasonic welding), gluing, or by other suitable attachment means.

[0863] Figure 9 The loop portion 1360 in the embodiment may be semi-rigid and / or configured to substantially maintain its in-use shape when not being worn by a user, and may be, for example, Figures 8A-8B Or as described in 8E.

[0864] Figure 8A-9 The various strap portions of the illustrated positioning and stabilizing structure 1300, such as the lateral strap portions 1330, the top strap portion 1340, the annular strap portions 1360 (e.g., the upper transverse strap portion 1370, and the occipital strap portion), can each comprise a fabric material. In some examples, any or all of the strap portions can comprise a fabric outer layer (on one or both sides) and a foam inner layer. Any or all of the strap portions can comprise, for example, a fabric-foam laminate.

[0865] In other examples of the present technology, some or all portions of the positioning and stabilizing structure 1300 can include materials other than or in addition to fabric or fabric and foam. In some examples, some or all of the strap portions can include silicone, rigid plastic, foam, leather, or other suitable materials.

[0866] In other examples, rigidifiers may be added to the lateral strap portion 1330 and / or the annular strap portion 1360 to provide additional stability.

[0867] 5.4.3 Strap

[0868] Figure 10A and 10B 1 and 2. Each head-mounted display system 1000 includes a head-mounted display unit 1200, which may be a head-mounted display unit as described in reference Figures 7A-7B The head mounted display unit 1200 may include a display unit housing 1205 including a display, and an interface structure 1100 connected to the display unit housing 1205 and constructed and arranged to engage a user's face in use.

[0869] like Figures 10A-10B As shown, the positioning and stabilizing structure 1300 in each of the described examples includes a strap portion 1380. In each of the described examples, the strap portion 1380 is constructed and arranged to encircle the user's head during use and engage an area of ​​the user's head that covers the frontal bone and an area of ​​the user's head that covers or is located below the occipital bone. The strap portion 1380 engages the user's head and provides an anchor to which the other strap portions are connected.

[0870] exist Figures 10A-10BIn the example shown, the positioning and stabilizing structure 1300 includes a pair of lateral strap portions 1330 that, during use, connect to a strap portion 1380 at respective lateral sides of a user's head and are constructed and arranged to connect to respective lateral sides of the head-mounted display unit 1200. The lateral strap portions 1330 can be placed in a tensioned state during use to pull the head-mounted display unit 1200 into engagement with the user's face. The relatively immovable strap portion 1380 provides an anchor from which the lateral strap portions 1330 can pull the head-mounted display unit 1200 toward the user's face.

[0871] The positioning and stabilizing structure 1300 may also include an adjustment mechanism constructed and arranged to allow a user to selectively adjust the length of the strap portion 1380. The strap portion may have a pair of ends connected to respective sides of the adjustment mechanism. The strap portion can be considered to have two opposing sections, each extending on opposite sides of the user's head and intersecting the sagittal plane at two locations (one at the back of the user's head and one at the front of the user's head). The adjustment mechanism can be configured to simultaneously and equally adjust the effective length of both sections of the strap portion, such that the head-mounted display unit remains properly aligned for viewing as the length of the strap portion is adjusted.

[0872] For example, Figures 10A-10B As shown in each of the figures, the adjustment mechanism includes a dial adjustment mechanism 1390, which includes a dial 1392 that adjusts the length of the strap portion 1380 when rotated. Dial 1392 may be, for example, a ratchet dial. As shown, dial 1392 is positioned on strap portion 1380 in an area of ​​the user's head that covers or is located below the occipital bone. More specifically, dial 1392 is aligned with the sagittal plane of the user's head during use (e.g., centered relative to the user's head during use). In other examples, dial 1392 may be positioned elsewhere, such as on the side of the user's head.

[0873] In one example, if Figure 10B-1 As shown, dial adjustment mechanism 1390 may include a rack and pinion assembly 1601. Dial 1392 may include a pinion 1602 that meshes with a rack or pair of racks connected to (e.g., within) strap portion 1380 such that rotation of dial 1392 causes the racks to be pulled together or pushed apart to adjust the effective length of strap portion 1380.

[0874] exist Figure 10B-1In the example shown, the strap portion 180 may include a first end portion 1380 (1) and a second end portion 1380 (2) having racks 1604 extending therefrom. For example, as will be understood by one skilled in the art, one rack 1604 may extend from an upper portion of the first end portion 1380 (1) and another rack 1604 may extend from a lower portion of the second end portion 1380 (2). A pinion 1602 may be arranged to engage with the racks 1604 at both the first and second ends such that rotation of the pinion (via the dial 1392) will cause the ends of the strap portion to be pulled toward each other (e.g., in an overlapping manner) or pushed apart to adjust the effective length of the strap portion 1380. As the dial is rotated, the length adjustment may be equal for both ends 1380 (1), 1380 (2) of the strap portion so that the head mounted display unit remains properly aligned for viewing by the user.

[0875] In other examples, dial 1392 is connected to one or more wires, cables, or the like that are connected to points on strap portion 1380. The wires or cables can be wound onto a spool connected to dial 1392, such that rotation of dial 1392 causes more or less wire or cable to be wound onto the spool, thereby adjusting the effective length of strap portion 1380. The dial adjustment mechanisms discussed herein can be applied to the dial adjustment mechanisms of any other examples of the present application.

[0876] In other examples, the adjustment mechanism does not include a dial, but rather includes another suitable mechanism, such as a hook and loop connection, a magnetic connection, a connection between multiple domes, and / or an adjustable buckle, etc.

[0877] The strap portion 1380 can be at least partially rigidized (e.g., at least semi-rigidized) at an area of ​​the user's head located above or below the occipital bone. This can provide a stable fit around the back of the user's head. The strap portion 1380 can include an internal rigidizer within the outer layer of the strap portion 1380, or can include an external rigidizer, such as provided to the non-user-facing side of the strap. In other examples, the entire strap portion 1380 is rigidized in this manner.

[0878] exist Figures 10A-10B In the example shown, the positioning and stabilizing structure 1300 includes a forehead pad 1395 connected to a strap portion 1380 that is constructed and arranged to engage the user's forehead. The forehead pad 1395 may include padding formed from, for example, foam, silicone, gel, etc., and may provide a comfortable engagement of the strap portion 1380 with the user's forehead.

[0879] The positioning and stabilizing structure 1300 in the illustrated example includes a top strap portion 1340 that is connected to the strap portion 1380 proximate the user's forehead and is constructed and arranged to be connected to the head mounted display unit 1200. The top strap portion 1340 can be constructed and arranged to be connected to the head mounted display unit 1200, for example, at a single location. The top strap portion 1340 can be aligned with the sagittal plane of the user's head during use and can apply a partial rearward and partial upward force to the head mounted display unit 1200 to pull it into engagement with the user's face during use and support some of the weight of the head mounted display unit 1200, thereby providing a stable and comfortable fit. The top strap portion 1340 can refer to Figures 7A-7B Or as described elsewhere herein (e.g., by looping through an eyelet and securing to itself with a hook and loop or other suitable connection) to selectively adjust the length.

[0880] In some examples, the positioning and stabilizing structure 1300 does not include the top strap portion 1340 .

[0881] exist Figures 10A-10B The head mounted display unit 1200 in the example shown includes a pair of arms 1210 disposed on respective lateral sides of the head mounted display unit 1200, and the lateral straps 1330 are attached to the arms 1210. In other examples, the arms 1210 may be part of the positioning and stabilizing structure 1300 and configured to be attached to the display unit housing 1205. The arms 1210, their connection to the head mounted display unit 1200, and the attachment of the lateral straps 1330 to the arms 1210 may be as described with reference to FIG. Figures 8A-8B described.

[0882] Figure 10B The positioning and stabilizing structure 1300 in the illustrated example also includes a parietal strap portion 1310, which is constructed and arranged to engage the area of ​​the user's head covering the parietal bones. The parietal strap portion connects to the strap portion proximal to the lateral strap portions 1330 and extends around the back of the user's head, spaced apart from the occipital portion of the strap portion 1380. The parietal strap portion 1310 and the occipital portion of the strap portion work together to conform to the shape of the back of the head at relatively high and low intervals, thereby providing a stable engagement with the user's head. The parietal strap portion 1310 and the occipital portion of the strap portion each help stabilize the other, so that when both strap portions are present, neither is likely to slide up or down during use. The parietal strap portion 1310 may be elastically stretchable to provide a stable and comfortable fit for a range of users. In some examples, the parietal strap portion 1310 is selectively adjustable by the user.

[0883] In some embodiments, for example Figure 10AIn the illustrated embodiment, the front portion (e.g., forehead portion 1387) and the back portion (e.g., occipital portion 1320) of the strap portion 1380 are integrally formed. For example, except for any joints at the adjustment mechanism, the strap portion 1380 may include a seamless strap that encircles the user's head and includes the forehead portion and the occipital strap portion. The lateral strap portions 1330 and / or the top strap portion 1340 may then be attached to the strap portion by sewing, welding (e.g., ultrasonic welding), gluing, or by another suitable connection method. Figure 10A In the example of , the lateral belt portion 1330 is also formed integrally with the strap portion 1380. Figure 10B In the example of , the lateral strap portion 1330, the parietal strap portion 1310, and the rear / occipital portion of the strap portion 1380 are integrally formed, and the front / forehead portion of the strap portion 1380 is attached by stitching, welding, gluing, or other suitable connection means.

[0884] Figure 10A and 10B The various strap portions of the illustrated positioning and stabilizing structure 1300, such as the strap portion 1380, the lateral strap portion 1330, the top strap portion 1340, and the parietal strap portion 1310, can each comprise a fabric material. In some examples, any or all of the strap portions can comprise a fabric outer layer (on one or both sides) and a foam inner layer. Any or all of the strap portions can comprise, for example, a fabric-foam laminate.

[0885] In other examples of the present technology, some or all portions of the positioning and stabilizing structure 1300 can include materials other than or in addition to fabric or fabric and foam. In some examples, some or all of the strap portions can include silicone, rigid plastic, foam, leather, or other suitable materials.

[0886] In other examples, rigidifiers may be added to the front of the lateral strap portion 1330, the parietal strap portion 1310, and / or the strap portion 1380 to provide additional stability.

[0887] 5.4.4 Pivotable connection to the head-mounted display unit

[0888] Figures 11A-11B Another example of a head mounted display system 1000 is shown. The positioning and stabilization structure 1300 of the embodiment is similar to that of the reference Figure 10A and 10B Those described. For example Figures 11A-11BThe positioning and stabilizing structure 1300 in each of the examples shown includes a strap portion 1380 that is constructed and arranged to encircle the user's head and engage an area of ​​the user's head that covers the frontal bone and an area of ​​the user's head that covers or is located below the occipital bone during use. The strap portion 1380 may form an occipital strap portion 1320 that is configured to engage an area above or below the occipital bone. The strap portion 1380 may fit tightly around the user's head during use. The positioning and stabilizing structure 1300 also includes a strap portion similar to Figure 10B The parietal girdle 1310 of the example shown will not be repeated with Figure 10A and 10B The examples shown in share many features, and the following disclosure will focus on the differences.

[0889] The strap portion 1380 may include a fabric outer layer, such as in the form of a fabric sleeve, which may be knitted. The strap portion 1380 may also include or function as a rigidizer. For example, the strap portion 1380 may include a rigidizer layer, or a rigidizer member configured to resist deformation of the strap portion 1380. In some instances, the rigidizer layer or member may be formed from a thermoplastic elastomer, such as nylon. The rigidizer may be internal to the fabric sleeve. In one example, the strap portion 1380 includes a nylon rigidizer with a fabric sleeve. The strap portion 1380 may be partially flexible to conform to the shape of the user's head.

[0890] exist Figure 11A and 11B In the example shown, the head-mounted display unit 1200 is pivotally attached to the strap portion 1380 at a pair of pivot connections 1381, allowing the head-mounted display unit 1200 to pivot about an axis aligned perpendicularly with the sagittal plane of the user's head during use. In some examples, the head-mounted display unit 1200 can be configured to pivot to adjust its angle relative to the positioning and stabilizing structure 1300 to provide a good fit with a particular user's head size and shape. In some examples, the head-mounted display unit 1200 can additionally or alternatively be configured to pivot between a viewing position, in which the head-mounted display unit 1200 is positioned above the user's eyes, and a non-viewing position, in which the head-mounted display unit 1200 is positioned above the user's frontal bone. Advantageously, this can allow the user to "flip up" the head-mounted display unit 1200 away from their eyes to view their real-world environment, take a break, etc., without completely removing the head-mounted display system 1000.

[0891] like Figures 11A-11B As shown, the pivot connection 1381 can be located near the mid-coronal plane of the user's head during use. Figure 11AIn the example shown, the strap portion 1380 includes a pair of slots 1383 (e.g., linear slots), and the pivot connection 1381 is located within the slots 1383. The slots 1383 can allow the pivot connection 1381 to move relative to the strap portion 1380. The movement of the pivot connection 1381 can be in a front-to-back direction (e.g., front-up-back-down direction). This can advantageously provide further adjustability of the position and / or angle of the head-mounted display unit 1200 relative to the positioning and stabilizing structure 1300.

[0892] In certain examples, the pivot connection 1381 can enable the head mounted display unit 1200 to move at least partially forward during pivoting. Figure 11A-1 , this can facilitate movement of the head mounted display unit 1200 from the viewing position to the non-viewing position because the head mounted display unit may require an amount of forward movement of the head mounted display unit 1200 to clear the user's forehead and / or forehead portion 1387 of the strap portion when moving to the non-viewing position. The head mounted display unit 1200 is able to move "up and away from" the user's eye area. The pivot connection 1381 can slide together so that the axis about which the head mounted display unit 1200 pivots remains perpendicular to the sagittal plane of the user's head. When the head mounted display unit 1200 is moved from the viewing position ( Figure 11A ) pivots to the non-viewing position ( Figure 11A-1 ), pivot connection 1381 can move at least partially forward within slot 1383. Pivot connection 1381 can slide, for example, in a direction along the length of strap portion 1380, which can be partially forward and partially upward.

[0893] In the non-viewing position, the head mounted display unit 1200 may be positioned above the forehead portion 1387 of the strap portion, as shown in FIG. Figure 11A-1 As shown, or alternatively, the head-mounted display can be further rotated upward so that at least a majority of the head-mounted display is above forehead portion 1387. In other examples, slot 1383 can be curved (e.g., curved upward in a forward direction) to facilitate movement to a non-viewing position. The upwardly curved slot can allow the head-mounted display unit to be moved to the non-viewing position with less rotation (or no rotation) at pivot connection 1381.

[0894] Pivot connection 1381 can be locked by the user. In some examples, pivot connection 1381 allows HMD 1200 to rotate about pivot connection 1381 through a continuous range. Alternatively, pivot connection 1381 can provide indexed rotation of HMD 1200, whereby a user can rotate HMD 1200 between two or more positions in which pivot connection 1381 supports HMD 1200 and prevents HMD 1200 from rotating unless the user forces HMD 1200 to rotate. A lockable pivot connection 1381, or a pivot connection 1381 that resists rotation of HMD 1200 during use, can advantageously support some of the weight of HMD 1200 by resisting the moment generated at pivot connection 1381 by the weight of HMD 1200, thereby transferring the moment to positioning and stabilizing structure 1300 as a whole. This can advantageously reduce the perceived weight of the head mounted display unit 1200, or at least make the head mounted display system 1000 feel more balanced than if the pivot connection 1381 were not locked or at least partially resisted rotation.

[0895] exist Figure 11A and 11B In the example shown, the head mounted display unit 1200 includes a pair of arms 1210 that connect the head mounted display unit 1200 to a strap portion 1280. The head mounted display unit 1200 may include a display unit housing 1205 containing a display. The arms 1210 may connect the display unit housing 1205 to the strap portion 1280. The arms 1210 may be rigidly connected to the display unit housing 1205. Figures 11A-11B In the example shown, the arm 1210 forms part of the display unit housing 1205. However, in other examples, the arm 1210 may form part of the positioning and stabilising structure 1300 and be configured to be removably attached to the display unit housing.

[0896] exist Figure 11A and 11B In the example shown, arms 1210 are pivotally connected to strap portion 1380 at pivot connections 1381. Pivot connections 1381 allow arms 1210 to rotate about axes aligned with both pivot connections 1381 (which may be aligned perpendicular to the sagittal plane of the user's head during use). In the example depicted, arms 1210 are wide in the superior-inferior direction and form side shields configured to reduce the effects of any light leakage at the lateral periphery of interface structure 1100. This can advantageously help protect the user's eyes from unwanted ambient light in their peripheral vision, thereby allowing for greater immersion in the content provided by the display.

[0897] Positioning and stabilizing structure 1300 may include a forehead pad 1395 connected to strap portion 1380 and configured to engage the user's forehead. Forehead pad 1395 may include an outer layer formed of a fabric material that contacts the user's head. In some examples, forehead pad 1395 may include foam, gel, an elastomer (e.g., silicone or TPE), and / or a fabric pad. Forehead pad 1395, or at least one of its face-contacting layers, may be breathable and low-profile.

[0898] like Figure 11A and 11B As shown, the positioning and stabilizing structure 1300 may include a parietal strap portion 1310 configured to engage the user's head in an area covering the parietal bones of the user's head during use. The parietal strap portion 1310 may extend between the side portions of the strap portion 1380, for example, between locations covering the temporal bones of the user's head. The parietal strap portion 1310 may be substantially inextensible or may have low extensibility to allow for a sliding fit while providing support. The parietal strap portion 1310 may be formed from a textile material, such as a tubular knitted textile material. In some examples, the parietal strap portion 1310 includes a pair of elastically extendable lateral portions proximal to the strap portion 1380 and a rear portion that extends less than the elastically extendable lateral portions. The spaced relationship between the parietal strap portion 1310 and the occipital strap portion 1320 may help stabilize the positioning and stabilizing structure, as previously described.

[0899] The parietal strap portion 1310 may be connected to the strap portion 1380 at a location spaced forwardly from the pivot connection 1381, as shown. Figure 11A This arrangement can enable the tension in the parietal strap portion 1310 to generate a moment about the pivot connection 1381 in a direction opposite to the moment generated by the weight of the head mounted display unit 1200, which can help support the head mounted display unit 1200 and which can advantageously provide comfort in use. Alternatively, in Figure 11B In the example shown, the parietal strap portion 1310 is connected to the strap portion 1380 substantially at the location of the pivot connection 1381.

[0900] The head mounted display system 1000 also includes one or more battery packs 1500 for powering the head mounted display system 1000. Figure 11A As shown, the head mounted display system 1000 includes a battery pack 1500 connected to the occipital strap 1320. Figure 11BAs shown, the head-mounted display system 1000 includes a pair of battery packs 1500 connected to the occipital strap 1320, one battery pack located on each side of the dial 1392. Positioning the battery packs 1500 at the back of the user's head on the occipital strap 1320 can help balance the weight of the head-mounted display system 1200. The occipital strap 1320 and / or the battery packs 1500 can engage the occipital landmark on the user's head. A power cable from the battery packs 1500 can be integrated into the strap 1380 or can extend along the strap 1380 and connect to the head-mounted display unit 1200.

[0901] Strap portion 1380 can be adjustable in length and can include a dial adjustment mechanism 1390 including a rotatable dial 1392. Dial adjustment mechanism 1390 can be configured to cause the length of strap portion 1380 to change when dial 1392 is rotated. Dial adjustment mechanism 1390 can be as described elsewhere herein and can be disposed, for example, in occipital strap portion 1320 of strap portion 1380. In use, dial 1392 can be positioned near (e.g., intersecting) the sagittal plane of the user's head.

[0902] The head mounted display unit 1200 includes Figure 11A and 11B 1 and 1 . In the example depicted, the head mounted display unit 1200 and the interface structure 1100 are configured to be compact and low profile. The interface structure 1100 can engage the user's face, such as around the periphery of the user's eye area and on the ridge of the user's nose, partially supporting the head mounted display unit 1200 and blocking ambient light from reaching the user's eyes during use (e.g., providing a light seal). In the example depicted, the interface structure 1100 includes a foam laminate. The foam laminate can be thermoformed. The interface structure 1100 can also include a nasal ridge support configured to engage the user's nasal ridge during use. The interface structure 1100 can also include a breathable fabric surface.

[0903] In some examples, the interface structure 1100 can include a facial attachment portion formed from a 3D fabric, which some users may find particularly comfortable. Alternatively, the interface structure 1100 can be formed from a combination of silicone and foam, such as a silicone flange encapsulating a foam cushion, which can provide for large variations in the user's anatomy due to the compressibility and conformability of the foam. In other examples, the interface structure 1100 can be formed solely from silicone, such as a curled silicone flange. Silicone surfaces can be particularly easy to clean. In each case, the interface structure 1100 can include varying properties provided by variations in material thickness and / or geometry at different locations around the perimeter of the user's eye area.

[0904] In some cases, such as Figure 11A and 11B In the illustrated example, the front portion (e.g., forehead portion 1387) and the back portion (e.g., occipital portion 1320) of the strap portion 1380 are integrally formed. For example, the strap portion 1380 may comprise a seamless strap that encircles the user's head and, except for any joints at the adjustment mechanism, includes the forehead portion 1387 and the occipital strap portion 1320. The parietal strap portion 1310 may then be attached to the strap portion 1380 by sewing, welding (e.g., ultrasonic welding), gluing, or by another suitable connection method.

[0905] Figure 11A The various strap portions of positioning and stabilizing structure 1300 shown in FIG11B , such as strap portion 1380 and parietal strap portion 1310 , can each comprise a textile material. In some examples, any or all of the strap portions can include a fabric outer layer (on one or both sides) and a foam inner layer. Any or all of the strap portions can comprise, for example, a fabric-foam laminate. Strap portion 1380 can also include a rigidizer configured to render strap portion 1380 semi-rigid or to maintain a substantially in-use shape when not on the user's head.

[0906] In other examples of the present technology, some or all portions of the positioning and stabilizing structure 1300 can include materials other than or in addition to fabric or fabric and foam. In some examples, some or all of the strap portions can include silicone, rigid plastic, foam, leather, or other suitable materials.

[0907] In other examples, rigidifiers may be added to the front and / or back of the side strap portions 1330, the parietal strap portion 1310, and / or the strap portion 1380 to provide additional stability.

[0908] 5.4.5 Strap and occipital girdle

[0909] Figures 12A-12K Other examples of head-mounted display systems are shown. Figure 12A Another example of a head-mounted display system 1000 including a strap portion 1380 is shown. In this example, the positioning and stabilizing structure 1300 includes a pair of lateral strap portions 1330 that are constructed and arranged to connect to respective lateral sides of the head-mounted display unit 1200 and to connect to each other at the back of the user's head to form a strap portion 1380 that partially surrounds the user's head. In this example, the strap portion 1380 is in a tensioned state to pull the head-mounted display unit 1200 into engagement with the user's face.

[0910] The strap portion 1380 can engage the area of ​​the user's head covering the parietal bones during use, and in some specific examples can be semi-rigid at the area of ​​the user's head covering the parietal bones. This can provide a comfortable and stable fit of the positioning and stabilizing structure 1300. In some examples, the entire strap portion 1380 can be semi-rigid.

[0911] In other examples, the entire strap portion 1380 and / or the occipital strap portion 1320 can be at least semi-rigid (e.g., having some semi-rigid portions and some rigid portions). When at least the strap portion is rigidified, the lateral strap portions 1330 do not elastically pull the head-mounted display unit 1200 into engagement with the user's face. Instead, the head-mounted display system behaves more like an adjustable helmet, with the weight of the display unit more evenly distributed across the head-mounted display system 1000. The dial adjustment mechanism 1390 and the top strap portion 1340 can be adjusted to fit the device to a specific user's head size. The strap portion 1380 and the occipital strap portion can be provided with a cushioning layer (e.g., foam or gel padding) to achieve a snug and stable yet comfortable fit. In other examples, the top strap portion can also be provided with a cushioning layer. This arrangement can provide a different feel for the user, as it relies less on tension in the straps to provide a snug fit. Instead, the dial adjustment mechanism and the top strap portion are adjusted to set the positioning and stabilizing structure to a substantially fixed size, while the engagement of the user's head with the padding in the interface structure 1100 and along the strap portion 1380 and occipital strap portion 1320 (and in some examples, the top strap portion 1340) provides a comfortable, stable, and snug fit. Once donned, fine adjustments can be made via the dial adjustment mechanism (and the top strap portion) to pull the head mounted display unit 1200 into the desired engagement with the user's face.

[0912] In other examples, the strap portion 1380 and / or the occipital strap portion 1320 can be formed from a semi-rigid and / or rigid plastic material. In other examples, the strap portion and the occipital strap portion can be a strap comprising a fabric (e.g., a fabric sleeve or an inner and / or outer fabric layer) and / or a padding (e.g., foam) layer with rigidizers provided therein to impart rigidity.

[0913] like Figure 12AAs shown, each of the lateral strap portions 1330 is located in a path that extends rearwardly and partially upwardly from the head mounted display unit 1200 toward a rear region of the user's head. This allows the lateral strap portions 1330 to be connected to the head mounted display unit 1200 at approximately eye level while engaging a portion of the upward facing surface of the user's head at the parietal bone. The strap portion 1380 can then provide at least some upward force to the head mounted display unit 1200 during use, thereby absorbing at least some of the weight of the head mounted display unit 1200. As described elsewhere herein, the lateral strap portions 1330 can be connected to the arms 1210 of the head mounted display unit 1200. In other examples, the arms 1210 can be part of the positioning and stabilizing structure 1300 and configured to be attached to the display unit housing 1205. The lateral strap portions 1330, or at least the front portions thereof, the arms 1210, and the connections between the lateral strap portions 1330, the arms 1210, and the head mounted display unit 1200 can be substantially as described above with reference to Figures 8A-8B or as described elsewhere herein.

[0914] Positioning and stabilizing structure 1300 also includes an adjustment mechanism constructed and arranged to allow a user to selectively adjust the length of strap portion 1380. The adjustment mechanism can be positioned between lateral strap portions 1330 so as to connect the lateral strap portions at a location behind the user's head to form the strap portion. Thus, the adjustment mechanism can be configured to simultaneously and equally adjust the length of both lateral strap portions, thereby adjusting the length of the strap portion. Figure 12A The adjustment mechanism in the example shown is a dial adjustment mechanism 1390 including a dial 1392, substantially as described in reference Figure 10B As described above, and in other examples, there may be another suitable adjustment mechanism, such as the one described above with respect to Figure 10B One of the alternatives described.

[0915] In this particular example, the positioning and stabilizing structure 1300 includes an occipital strap portion 1320 connected to a strap portion 1380, and the occipital strap portion 1320 is constructed and arranged to engage the area of ​​the user's head that covers the occipital bone. The strap portion 1380 and the rear portion of the occipital strap portion 1320 can together form a stabilizing rear portion of the positioning and stabilizing structure 1300, from which other strap portions can extend and, in use, be connected under tension toward the head-mounted display unit 1200 to pull the head-mounted display unit 1200 into engagement with the user's face. The occipital strap portion 1320 can be semi-rigid to provide a stable fit against the occipital region of the user's head during use.

[0916] For example, Figure 12A As shown, the occipital strap portion 1320 may provide a curved shape such that the occipital strap portion 1320 extends downward from a corresponding side of the strap portion 1380 and then extends backward and inward to form a loop with the strap portion 1380 .

[0917] In reference Figure 12A-1 In an example, occipital strap portion 1320 may include a layered arrangement comprising an inner (user contacting) layer 1425 (e.g., a fabric material), a cushioning layer 1426 (e.g., foam, gel), a rigidizer layer 1427 (e.g., a plastic, thermoplastic rigidizer layer), and an outer layer 1424 (e.g., a fabric material). In an example, the inner and outer fabric layers may be fabric sleeves (e.g., a tubular knit fabric). In other examples, the cushioning layer may be omitted. It should be understood that the layered structure described herein may be used with any other strap portion described elsewhere in this application as being rigidized or having a rigidized design.

[0918] Figure 12A The positioning and stabilizing structure 1300 in the illustrated example also includes a top strap portion 1340 that can be connected between the strap portion 1380 and the head mounted display unit 1200. The top strap portion 1340 can be aligned with the sagittal plane of the user's head during use, for example. The top strap portion 1340 can be the same as that described above with reference to FIG. Figures 7A-7B , 8A-8B or Figure 10A Other forms described.

[0919] In some examples, such as Figure 12A In the example shown, the side strap portions 1330 and the rear portion (e.g., wall) of the strap portion 1380 are integrally formed. For example, the strap portion 1380 may comprise a seamless strap that encircles the user's head and includes the side strap portions 1330 and the top strap portion, excluding any joints at the adjustment mechanism. The occipital strap portion 1320 and / or the top strap portion 1340 may then be connected to the strap portion 1380 by sewing, welding (e.g., ultrasonic welding), gluing, or other suitable connection means.

[0920] Figure 12A The various strap portions of the illustrated positioning and stabilizing structure 1300, such as strap portion 1380, top strap portion 1340, and occipital strap portion 1320, can each comprise a fabric material. In some examples, any or all of the strap portions can comprise a fabric outer layer (on one or both sides) and a foam inner layer. Any or all of the strap portions can comprise, for example, a fabric-foam laminate.

[0921] In other examples of the present technology, some or all portions of the positioning and stabilizing structure 1300 can include materials other than or in addition to fabric or fabric and foam. In some examples, some or all of the strap portions can include silicone, rigid plastic, foam, leather, or other suitable materials.

[0922] In other examples, rigidifiers may be added to the rear of the lateral strap portion 1330 , the top strap portion 1340 , the occipital strap portion 1320 , and / or the strap portion 1380 to provide additional stability.

[0923] Figures 12B-12C The example shown in is similar to Figure 12A The examples shown in , and above about Figure 12A The disclosures should be understood to apply to Figure 12B and 12C , unless the context clearly requires otherwise. In addition, Figure 12B and 12C In the description of , only specific differences will be described. Figure 12B and 12C In the example shown, the positioning and stabilising structure 1300 does not include a top strap portion 1340 .

[0924] exist Figure 12B and 12C In the example shown, the positioning and stabilizing structure 1300 includes a pair of lateral strap portions 1330 that are constructed and arranged to be connected to respective lateral sides of the head mounted display unit 1200 and to each other at the back of the user's head to form a strap portion 1380 that partially surrounds the user's head. Figure 12A In the example shown, the strap portion 1380 is connected to the arm 1210, but Figures 12B-12C In the example shown, the lateral straps 1330 are connected to the interface structure 1100 of the head mounted display system 1000 . Figure 12C The diagram schematically illustrates how the strap portion 1380 and the interface structure 1100 fit together around and around the user's head and can be described as "hugging" the user's head to provide a secure fit. In the illustrated example, the positioning and stabilizing structure 1300 is attached to the head-mounted display unit 1200 at a location on the head-mounted display unit 1200 that faces or is adjacent to the user's face, rather than being attached to the head-mounted display unit 1200 at a location that faces away from the user, thereby allowing the headband to hug most of the circumference of the user's head. Furthermore, attaching the positioning and stabilizing structure 1300 to the interface structure can provide a compact or low-profile head-mounted display system 1000 because no additional external components (e.g., arms) are provided.

[0925] exist Figure 12B and 12CIn t...

Claims

1. A head-mounted display system, comprising: A head mounted display unit, comprising: a display unit housing including a display; and an interface structure connected to the display unit housing and constructed and arranged to engage a user's face in use; and a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head in use, the positioning and stabilizing structure comprising: a pair of arms connected in use to respective sides of the display unit housing, the arms being constructed and arranged to project rearwardly from the display unit housing on respective sides of the user's head in use, the rear portion of each arm comprising an upper arm connection portion and a lower arm connection portion; a top strap portion constructed and arranged to connect between each of the upper arm connecting portions of the pair of arms, the top strap portion being configured to engage the user's head at a head region above the location of the pair of arms during use; and an occipital strap portion constructed and arranged to be connected between the lower arm links and to engage a portion of the user's head above or below the occipital region of the user's head in use, Wherein, when the head-mounted display system is worn, a portion of each arm located at the rear of the head-mounted display unit has increased rigidity compared to the top strap portion.

2. The head mounted display system according to claim 1, wherein: The arm is pivotably attached to the display unit housing.

3. The head mounted display system according to claim 1 or 2, wherein: Each arm is at least partially covered by a fabric sleeve.

4. The head mounted display system according to any one of claims 1 to 3, wherein: The top strap portion is connected to the head mounted display unit except for each of the upper arm connecting portions of the pair of arms.

5. The head mounted display system according to claim 4, wherein: The top strap portion is connected to the head mounted display unit at a single location.

6. The head mounted display system according to any one of claims 4 or 5, wherein: The top strap portion is substantially Y-shaped, having front legs connected to the head mounted display unit and a pair of rear legs connected to the upper arm connecting portions of the pair of arms.

7. The head mounted display system according to any one of claims 4 to 6, wherein: The length of at least a portion of the top strap portion is selectively adjustable.

8. The head mounted display system according to any one of claims 4 to 7, wherein: The top strap portion is configured to pass through the eyelets on the head mounted display unit and loop back to secure to itself.

9. The head mounted display system according to claim 8, wherein: The top strap portion is configured to be secured to itself with a hook and loop connection.

10. The head mounted display system according to any one of claims 1 to 9, wherein: The occipital strap portion includes an occipital strap connector at one end of the occipital strap portion, the occipital strap connector being constructed and arranged to be releasably connected to a respective one of the lower arm connectors of the arm.

11. The head mounted display system according to claim 10, wherein: The occipital strap connection is constructed and arranged to magnetically attach to the corresponding one of the lower arm connections.

12. The head mounted display system according to claim 10 or claim 11, wherein: The length of the occipital band portion can be selectively adjusted.

13. The head mounted display system according to any one of claims 10 to 12, wherein: The occipital strap portion is configured to pass through the eyelets on the occipital strap connector, loop and secure to itself.

14. The head mounted display system according to claim 13, wherein: The occipital strap is configured to be secured to itself with a hook and loop connection.

15. The head mounted display system according to any one of claims 1 to 14, wherein: One or both of the arms are formed in two parts which are releasably connectable to each other.

16. The head mounted display system according to claim 15, wherein: The two parts of each arm are movably connected to each other to provide size adjustment of the positioning and stabilizing structure.

17. A head mounted display system according to any one of claims 1 to 16, wherein: One or both of the arms may be releasably connectable to the head mounted display unit.

18. The head mounted display system according to any one of claims 1 to 17, wherein: One or both of the lower arm connections may be movable relative to the remainder of the respective arm.

19. The head mounted display system according to any one of claims 1 to 18, wherein: The upper arm connection portion and the lower arm connection portion of each arm are positioned rearwardly of a supra-ear base point of the user's head in use.

20. The head mounted display system according to any one of claims 1 to 19, wherein: In use, each arm is configured to resist bending in both upward and downward directions.

21. The head mounted display system according to any one of claims 1 to 20, wherein: In use, each arm is configured to permit bending towards a medial direction to engage a portion of a rearwardly facing surface of the user's head.

22. The head mounted display system according to any one of claims 1 to 21, wherein: In use, when the top strap portion is in a tensioned state, the upper arm connection portion is urged toward the surface of the user's head.

23. The head mounted display system according to any one of claims 1 to 22, wherein: When the head mounted display system is worn, the occipital strap is configured to push the lower arm connection portion toward a surface of the user's head when the occipital strap is tightened.

24. The head mounted display system according to any one of claims 1 to 23, wherein: Each arm includes one or more hinges to facilitate bending the corresponding arm to conform to the shape of the user's head when wearing the head-mounted display system.

25. The head mounted display system according to any one of claims 1 to 24, wherein: The lower arm connection portion is configured to be positioned rearward of a supra-ear base point on the user's head in use.

26. The head mounted display system according to any one of claims 1 to 25, wherein: When the head mounted display system is worn, each arm projects rearwardly and bends medially at the back of the user's head.

27. A head mounted display system according to any one of claims 1 to 26, wherein: When the head mounted display system is worn, each arm protrudes rearward and bends upward away from the display unit housing.

28. A positioning and stabilizing structure for maintaining a head mounted display unit in an operating position on a user's head, the positioning and stabilizing structure comprising: a ring-shaped girdle portion, the ring-shaped girdle portion including an occipital girdle portion, the occipital girdle portion being constructed and arranged to engage an area of ​​the user's head covering the occipital bone or covering the parietal bone near the occipital bone; and A pair of lateral strap portions configured to extend along respective sides of the user's head in use, each of the lateral strap portions having: 1) a rear end portion connected to a respective side of the loop strap portion at a connection location; and 2) a front end portion adapted to be connected to a respective side of a head mounted display unit; Wherein, when the positioning and stabilising structure is worn in use, each connection location is positioned higher than the front end of the corresponding lateral belt portion.

29. A positioning and stabilising structure according to claim 28, wherein: Each of the lateral strip portions extends at least partially upwardly in a direction from the front end portion to the rear end portion.

30. A positioning and stabilising structure according to claim 28 or 29, wherein: The cuff portion is configured to substantially retain its in-use shape when the positioning and stabilising structure is not being worn by the user.

31. A positioning and stabilising structure according to any one of claims 28 to 30, wherein: The positioning and stabilising structure is configured to resist changes in angle between the upper transverse strap portion and the occipital strap portion when the lateral strap portions are tensioned in use.

32. A positioning and stabilising structure according to any one of claims 28 to 31, wherein: The width of the occipital girdle portion measured transversely to the length of the occipital girdle portion is greater than the width of the upper transverse girdle portion measured transversely to the length of the upper transverse girdle portion.

33. A positioning and stabilising structure according to any one of claims 28 to 32, wherein: The thickness of the annular belt portion is greater than the thickness of the lateral belt portion.

34. A positioning and stabilising structure according to claim 33, wherein: The thickness of the annular belt portion is greater than the thickness of the top belt portion.

35. A positioning and stabilising structure according to any one of claims 28 to 34, wherein: The annular belt portion includes a plurality of segments that are separately formed and connected together to form the annular belt portion.

36. A positioning and stabilising structure according to claim 35, wherein: The segments include an upper segment, a pair of lateral segments, and a lower segment.

37. A positioning and stabilising structure according to any one of claims 28 to 36, wherein: The annular belt portion includes at least a pair of hinges, each hinge being located near one of the connection locations between the annular belt portion and a corresponding one of the lateral belt portions.

38. A positioning and stabilising structure according to any one of claims 28 to 37, wherein: The length of each of the lateral strap portions is selectively adjustable.

39. A positioning and stabilising structure according to claim 38, wherein: Each of the lateral strap portions is configured to be secured to itself to form a loop suitable for connection to the head mounted display unit.

40. A positioning and stabilising structure according to claim 39, wherein: Each of the lateral strap portions is configured to be secured to itself by a hook and loop connection.

41. A positioning and stabilising structure according to any one of claims 28 to 40, wherein: The occipital strap is constructed and arranged to be positioned at or near the Frankfort plane of the user's head when in use.

42. A positioning and stabilising structure according to any one of claims 28 to 41, wherein: The positioning and stabilizing structure also includes a top strap portion, which is connected to the upper lateral strap portion or the occipital strap portion and is configured to extend forward from the upper lateral strap portion or the occipital strap portion over a portion of the user's head covering the user's frontal bone during use, and the top strap portion is suitable for being connected to the head-mounted display unit.

43. A positioning and stabilising structure according to claim 42, wherein: The annular band portion has a stiffness at locations along its length that is different from the stiffness at locations along the length of each lateral band portion.

44. A positioning and stabilising structure according to claim 42 or 43, wherein: The length of the top strap portion can be selectively adjusted.

45. A positioning and stabilising structure according to claim 44, wherein: The top strap portion is configured to secure to itself to form a loop suitable for connecting to the head mounted display unit.

46. ​​A positioning and stabilising structure according to claim 45, wherein: The top strap portion is configured to be secured to itself by a hook and loop connection.

47. A positioning and stabilising structure according to any one of claims 28 to 46, wherein: In use, the annular band portion is wider in the upper transverse band portion at a location that intersects a sagittal plane of the user's head than at other locations around the annular band portion.

48. A positioning and stabilising structure according to claim 47, wherein: The upper transverse strap has a greater width at the location where it intersects the sagittal plane than at lateral portions of the upper transverse strap.

49. A positioning and stabilising structure according to claim 48, wherein: The upper transverse band portion includes a front edge and a rear edge, the front edge being more curved than the rear edge to form a greater width.

50. A positioning and stabilising structure according to claim 49, wherein: The front edge curves forwardly in a lateral-to-medial direction and the rear edge does not curve substantially forwardly or rearwardly.

51. A positioning and stabilising structure according to any one of claims 28 to 50, wherein: The annular band portion has increased rigidity in a region directly adjacent to the connection location compared to rigidity in at least one other region of the annular band portion.

52. A positioning and stabilising structure according to any one of claims 28 to 51, wherein The annular strap portion also includes an upper lateral strap portion constructed and arranged to engage an upper region of the user's head at or near a coronal plane.

53. A head mounted display system, comprising: A head mounted display unit, comprising: a display unit housing including a display; and an interface structure connected to the display unit housing and constructed and arranged to engage the user's face in use; and A positioning and stabilising structure according to any one of claims 28 to 52.

54. The head mounted display system of claim 53, wherein: The head mounted display unit includes a pair of arms extending rearwardly from respective lateral sides of the display unit housing, and the lateral strap portions are each configured to be attached to a respective one of the arms.

55. The head mounted display system of claim 54, wherein: The arm is pivotably attached to the display unit housing.

56. A head mounted display system comprising: a display unit housing including a display; as well as an interface structure connected to the display unit housing and constructed and arranged to engage the user's face in use; and a positioning and stabilizing structure constructed and arranged to maintain the head mounted display unit in an operable position on the user's head in use, the positioning and stabilizing structure comprising: a strap portion constructed and arranged to, in use, encircle the user's head, engage an area of ​​the user's head covering the frontal bone, and form an occipital strap portion constructed and arranged to engage an area of ​​the user's head covering or beneath the occipital bone; The head-mounted display unit is pivotably attached to the strap portion at a pair of pivot connections, and the pair of pivot connections are arranged to be positioned on corresponding sides of the user's head during use so that the head-mounted display unit can pivot relative to the strap portion around an axis aligned perpendicular to the sagittal plane of the user's head, thereby allowing the display to move in upward and downward directions during use.

57. The head mounted display system of claim 56, wherein: The pivot connection is located adjacent the mid-coronal plane of the user's head in use.

58. A head mounted display system according to claim 56 or 57, wherein: The strap portion includes a pair of slots within which the pivot connection is located and which allow the pivot connection to move relative to the strap portion along the length of the slots.

59. A head mounted display system according to any one of claims 56-58, wherein: The pivot connection enables the head mounted display unit to move at least partially forward during pivoting.

60. The head mounted display system of claims 56-59, wherein: The head-mounted display unit is configured to pivot between a viewing position and a non-viewing position, wherein the head-mounted display unit is positioned above the user's eyes in the viewing position and the non-viewing position wherein the head-mounted display unit is positioned above the user's frontal bone.

61. The head mounted display system of claim 60, wherein: The slot is configured to cause the pivot connection to at least partially move forward when the head mounted display is pivoted from the viewing position to the non-viewing position.

62. A head mounted display system according to any one of claims 56-59, wherein: The positioning and stabilising structure comprises a parietal strap portion which is configured, in use, to engage the user's head at a region covering the parietal bone of the user's head.

63. The head mounted display system of claim 62, wherein: The parietal strap portion is connected to the strap portion.

64. A head mounted display system according to any one of claims 62 and 63, wherein: When the head mounted display system is worn, the parietal strap portion is connected to the strap portion at a location spaced forwardly from the pivot connection.

65. A head mounted display system according to any one of claims 62-64, wherein: The parietal strap portion includes a pair of elastically extendable side portions proximal to the strap portion and a rear portion extending less than the elastically extendable side portions.

66. A head mounted display system according to any one of claims 56-65, wherein: The head mounted display system also includes a battery pack for powering the head mounted display system.

67. The head mounted display system of claim 66, wherein: The battery pack is attached to the occipital strap.

68. A head mounted display system according to any one of claims 56-67, wherein: The length of the strap portion is adjustable.

69. A head mounted display system according to any one of claims 56-68, wherein: The strap portion includes a dial adjustment mechanism including a rotatable dial, the dial adjustment mechanism being configured to cause a change in the length of the strap portion when the dial is rotated.

70. The head mounted display system of claim 69, wherein: The dial adjustment mechanism is provided in the occipital strap portion of the strap portion.

71. A head mounted display system according to claim 69 or 70, wherein: The dial is positioned in use in a sagittal plane of the user's head.

72. A head mounted display system according to any one of claims 69-71, wherein: The head mounted display system includes a pair of battery packs mounted to the occipital strap, each of the battery packs being located on a respective side of the dial.

73. A head mounted display system according to any one of claims 56-72, wherein: The strap portion includes an outer layer formed of a fabric material.

74. A head mounted display system according to any one of claims 56-73, wherein: The strap portion includes a rigid member.

75. The head mounted display system of claim 74, wherein: The strap portion includes a fabric sleeve, and the rigidizer is within the fabric sleeve.

76. A head mounted display system according to any one of claims 56-75, wherein: The positioning and stabilizing structure includes a forehead pad attached to the strap portion and configured to engage a forehead of the user.

77. The head mounted display system of claim 76, wherein: The forehead pad includes a fabric material.

78. A positioning and stabilizing structure for maintaining a head mounted display unit in an operating position on a user's head, the positioning and stabilizing structure comprising: a pair of lateral strap portions adapted to be connected to respective lateral sides of a head mounted display unit, the lateral strap portions being connected to each other behind the user's head to form a strap portion that partially surrounds the user's head when the positioning and stabilizing structure is worn; an adjustment mechanism disposed between the lateral strap portions so as to connect the lateral strap portions at a rear region of the user's head, the adjustment mechanism being configured to simultaneously and equally adjust the length of the two lateral strap portions, thereby adjusting the length of the strap portion; as well as An occipital strap portion is constructed and arranged to engage an area of ​​the user's head covering the occipital bone.

79. A positioning and stabilising structure according to claim 78, wherein: The occipital belt portion is connected to the strap portion.

80. A positioning and stabilising structure according to any one of claims 78 and 79, wherein The adjustment mechanism is constructed and arranged to allow a user to selectively adjust the length of the strap portion when the positioning and stabilising structure is worn by the user.

81. A positioning and stabilising structure according to any one of claims 78 to 80, wherein: The adjustment mechanism includes a dial adjustment mechanism including a dial that adjusts the length of the strap portion when rotated.

82. A positioning and stabilising structure according to claim 81, wherein: The dial is positioned in use within the sagittal plane of the user's head.

83. A positioning and stabilising structure according to any one of claims 78 to 82, wherein: The strap portion is configured to engage a region of the user's head covering the parietal bone in use.

84. A positioning and stabilising structure according to any one of claims 78 to 83, wherein: The strap portion includes a rigidifier that imparts rigidity to the strap portion at least in the region of the user's head that covers the parietal bone.

85. A positioning and stabilising structure according to any one of claims 78 to 83, wherein: The entire strap portion includes a rigid member, and the rigid member imparts rigidity to the strap portion.

86. A positioning and stabilising structure according to any one of claims 78 to 85, wherein When the positioning and stabilising structure is worn, the lateral strap portions are configured to each lie, in use, on a path that partially extends rearwardly from the head mounted display unit rearwardly towards a rear region of the user's head.

87. A positioning and stabilising structure according to any one of claims 78 to 86, wherein: The occipital girdle is semi-rigid.

88. A positioning and stabilising structure according to any one of claims 78 to 87, wherein: The occipital strap includes a fabric sleeve and at least one rigidifier within the fabric sleeve.

89. A positioning and stabilising structure according to claim 88, wherein: The length of the fabric sleeve is elastically extendable to allow for size adjustment of the occipital strap portion.

90. A positioning and stabilising structure according to claim 88 or 89, wherein: The fabric sleeve is a knitted tube.

91. A positioning and stabilising structure according to any one of claims 88 to 90, wherein: The occipital strap portion includes a pair of rigidizers, each rigidizer including a rear end, the rear ends of the rigidizers being laterally spaced from each other adjacent a rear surface of the user's head when the positioning and stabilizing structure is worn.

92. A positioning and stabilising structure according to claim 91, wherein: When the positioning and stabilising structure is worn, the rigidisers extend rearwardly and curve inwardly to follow the curvature of the rear surface of the user's head.

93. A positioning and stabilising structure according to claim 92, wherein: When the positioning and stabilising structure is worn, each rigidiser extends rearwardly and curves downwardly and inwardly to follow the curvature of the rear surface of the user's head.

94. A positioning and stabilising structure according to any one of claims 91 to 93, wherein: The fabric sleeve is constrained by the rigid members to lie on a curved path defined by the curvature in each rigid member, and the fabric sleeve is configured to elastically extend over and along a length extending over the rigid members.

95. A positioning and stabilising structure according to any one of claims 78 to 94, wherein: The positioning and stabilizing structure also includes a top strap portion connected to the strap portion and adapted to be attached to the head mounted display unit.

96. A positioning and stabilising structure according to claim 95, wherein: The top strap portion is aligned with the sagittal plane of the user's head.

97. A positioning and stabilising structure according to claim 95 or 96, wherein: The top strap portion is configured to secure to itself to form a loop suitable for connection to the head mounted display unit.

98. A positioning and stabilising structure according to claim 97, wherein: The top strap portion is constructed and arranged to be secured to itself by a hook and loop connection.

99. A head mounted display system, comprising: A head mounted display unit, comprising: a display unit housing including a display; and an interface structure connected to the display unit housing and constructed and arranged to engage the user's face in use; and A positioning and stabilising structure according to any one of claims 78 to 98.

100. The head mounted display system of claim 99, wherein: The head mounted display unit includes a pair of arms extending rearwardly from respective lateral sides of the display unit housing, and the lateral strap portions are each configured to be attached to a respective one of the arms.

101. The head mounted display system of claim 100, wherein: The arm is constructed and arranged to be pivotally attached to the head mounted display unit.

102. The head mounted display system of claim 99, wherein: The lateral straps are constructed and arranged to attach to the interface structure of the head mounted display unit.

103. The head mounted display system of claim 99, wherein: The lateral straps are constructed and arranged to be attached to the display unit housing of the head mounted display unit.

104. A head mounted display system according to any one of claims 99-103, wherein: The head mounted display unit includes a pair of side shields extending rearwardly from respective lateral sides of the head mounted display unit through side portions of the interface structure.

105. The head mounted display system of claim 104, wherein: In use, each of the side shields extends rearwardly to a position proximate a respective supra-auricular base point of the user's head.

106. A head mounted display system according to any one of claims 104 and 105, wherein: The occipital strap is constructed and arranged to be attached to the side shields.

107. A head mounted display system according to any one of claims 99-106, wherein: The occipital strap portion is attached to the strap portion near the head mounted display unit.

108. The head mounted display system of claim 99, wherein: The occipital strap is connected to the head mounted display unit.

109. A positioning and stabilizing structure for maintaining a head mounted display unit in an operating position on a user's head, the positioning and stabilizing structure comprising: an upper lateral strap portion constructed and arranged to engage an upper portion of the user's head in use and to extend from one lateral side to the other lateral side of the user's head; an occipital strap portion constructed and arranged to engage a region of the user's head covering the occipital bone in use; a pair of joints at which the upper lateral strap portion and the occipital strap portion are joined, the joints being configured to respectively engage the lateral sides of the user's head in use; as well as a pair of lateral strap portions configured to extend respectively along the lateral sides of the user's head in use, each of the lateral strap portions having a front portion adapted to connect to the head mounted display unit and a rear portion connected to respective attachment portions of the upper lateral strap portion and the occipital strap portion; Each of the lateral strap portions includes a rigidifier that imparts rigidity to the lateral strap portion.

110. A positioning and stabilising structure according to claim 109, wherein: The upper transverse strap portion is substantially aligned with a coronal plane of the user's head in use, the coronal plane being aligned with each supra-auricular base point of the user's head.

111. A positioning and stabilising structure according to claim 109 or 110, wherein: In use, the upper transverse strap portion is wider in the sagittal plane of the user's head than proximate the junction with the occipital strap portion.

112. A positioning and stabilising structure according to any one of claims 109 to 111, wherein: The lateral belt portions and the upper transverse belt portion are integrally formed.

113. A positioning and stabilising structure according to any one of claims 109 to 112, wherein: The portion of the upper transverse belt portion proximate to the corresponding lateral belt portion includes a rigidifier that imparts rigidity to the upper transverse belt portion.

114. A positioning and stabilising structure according to claim 113, wherein: The upper transverse belt portion includes a rigidifier that imparts rigidity to the upper transverse belt portion along its entire length.

115. A positioning and stabilising structure according to claim 114, wherein: The positioning and stabilizing structure comprises a single rigid member extending from one lateral strap portion, through the upper transverse strap portion and into the other lateral strap portion.

116. A positioning and stabilising structure according to claim 115, wherein: A portion of the occipital strap portion proximate to the corresponding lateral strap portion includes a rigidifier that imparts rigidity to the occipital strap portion.

117. A positioning and stabilising structure according to claim 116, wherein: The single rigidizer includes rearwardly projecting portions that extend into respective ends of the occipital girdle.

118. A positioning and stabilising structure according to any one of claims 109 to 117, wherein: The occipital strap portion includes an occipital strap connector at one end of the occipital strap portion, the occipital strap connector being constructed and arranged to be releasably connected to the occipital strap connector at or near one of the junctions of the occipital strap portion and the upper lateral strap portion.

119. A positioning and stabilising structure according to claim 118, wherein: The occipital strap connector is constructed and arranged to magnetically attach to the occipital strap connection.

120. A positioning and stabilising structure according to claim 118 or 119, wherein: The length of the occipital band portion can be selectively adjusted.

121. A positioning and stabilising structure according to any one of claims 118 to 120, wherein: The occipital strap portion is configured to pass through the eyelets on the occipital strap connector, loop and secure to itself.

122. A positioning and stabilising structure according to claim 121, wherein: The occipital strap is configured to be secured to itself with a hook and loop connection.

123. A positioning and stabilising structure according to any one of claims 109 to 122, wherein: Each of the lateral strap portions includes an upper lateral strap connection portion connected to the upper lateral strap portion and an occipital strap connection portion connected to the occipital strap portion.

124. A positioning and stabilising structure according to claim 123, wherein: The length of each of the upper lateral strap portion and the occipital strap portion can be selectively adjusted simultaneously.

125. A positioning and stabilising structure according to any one of claims 109 to 124, wherein: The length of each of the lateral strap portions is selectively adjustable.

126. A positioning and stabilising structure according to any one of claims 125, wherein: Each of the lateral strap portions is configured to be secured to itself to form a loop suitable for connection to the head mounted display unit.

127. A positioning and stabilising structure according to claim 126, wherein: Each of the lateral strap portions is configured to be secured to itself by a hook and loop connection.

128. A positioning and stabilising structure according to any one of claims 109 to 127, wherein: The positioning and stabilizing structure also includes a top strap portion connected to the upper lateral strap portion and adapted to be connected to the head mounted display unit.

129. A positioning and stabilising structure according to claim 128, wherein: The length of the top strap portion can be selectively adjusted.

130. A positioning and stabilising structure according to claim 128 or 129, wherein: The top strap portion is adapted to connect to the head mounted display unit at a single location.

131. A positioning and stabilising structure according to any one of claims 128 to 130, wherein: The top strap portion is constructed and arranged to be secured to itself to form a loop suitable for connection to the head mounted display unit.

132. A positioning and stabilising structure according to claim 131, wherein: The top strap portion is constructed and arranged to be secured to itself by a hook and loop connection.

133. A head mounted display system, comprising: A head mounted display unit, comprising: a display unit housing including a display; and an interface structure connected to the display unit housing and constructed and arranged to engage the user's face in use; and A positioning and stabilising structure according to any one of claims 109 to 132.

134. The head mounted display system of claim 133, wherein: The head mounted display unit includes a pair of arms extending rearwardly from respective lateral sides of the display unit housing, and the lateral strap portions are each configured to be attached to a respective one of the arms.

135. The head mounted display system of claim 134, wherein: The arm is constructed and arranged to be pivotally attached to the head mounted display unit housing.

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