Head-mounted display unit and interface connection structure thereof

Abstract

An interface connection structure for a head-mounted display unit is constructed and arranged in a relative relationship with a user's face. The interface connection structure includes a chassis having a wall and at least one vent hole extending through the wall. The vent hole has a first opening on an inner surface of the wall and a second opening on an outer surface of the wall. The vent is substantially linear between the first and second openings and / or is configured to allow passage of light from the second opening to the first opening. The chassis also has at least one light shielding portion configured to block light from the vent into the eyes of the user.

Description

[0001] 1 Cross-reference to related applications

[0002] This application claims the benefit of and priority to Australian Provisional Patent Application No. 2022902186 filed on August 4, 2022 and Australian Provisional Patent Application No. 2022902931 filed on October 7, 2022, the entire contents of each of which are hereby incorporated by reference. Background Art 2.1 Technical Field

[0004] The present technology generally relates to head-mounted displays, positioning and stabilization structures, user interface connection structures, and other components used in head-mounted displays, including display units and associated head-mounted display assemblies and systems of positioning and stabilization structures, interface connection structures and / or components, and methods. The present technology finds particular application in the use of immersive reality head-mounted displays and is described herein in that context. It should be understood that the present technology may have broader application and may be used in any type of head-mounted display arrangement, including but not limited to virtual reality displays, augmented reality displays, and / or mixed reality displays.

[0005] 2.2 Description of Related Technology

[0006] It should be understood that if any prior art is referred to herein, such 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.

[0007] 2.2.1 Immersive Technology

[0008] Immersive technologies refer to technologies that attempt to replicate or enhance the physical environment through the means of a digital or virtual environment by creating a sensory sensation of the surroundings, thereby creating a sense of immersion.

[0009] Specifically, the immersion technology provides visual immersion to the user and creates virtual objects and / or virtual environments. The immersion technology can also provide immersion for at least one of the other five senses.

[0010] 2.2.2 Virtual Reality

[0011] 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 an electronic screen in order to observe virtual or computer-generated images in a virtual environment. Because the created environment is completely virtual, the user may be prevented and / or obscured from interacting with their physical environment (e.g., they may not be able to hear and / or see physical objects in the physical environment they are currently in).

[0012] The electronic screen can be supported in the user's line of sight (e.g., mounted to the user's head). While observing the electronic screen, visual feedback output by the electronic screen and observed by the user can produce a virtual environment for simulating the actual environment. For example, the user may be able to look around (e.g., 360°) by pivoting their head or their entire body, and interact with virtual objects observable by the user through the electronic screen. This can provide an immersive experience to the user, 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 is at least related to the user's vision (i.e., because they are watching the electronic screen), but other senses may also be included. Electronic screens are usually mounted to the user's head so that they can be positioned very close to the user's eyes, which allows the user to easily observe the virtual environment.

[0013] 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 a speaker to provide auditory feedback. VR devices can also include tactile feedback (e.g., in the form of tactile 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 user sense.

[0014] When using a VR device, a user may wish to limit and block environmental stimuli. For example, a user may want 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 can be arranged to be close to (e.g., in contact or close contact with) the user's face, but may not seal the user's face. In either example, ambient light may not reach the user's eyes, so that the only light observable by the user comes from the electronic screen.

[0015] In other examples, the VR device can limit and / or prevent the user's ears from hearing ambient noise. In some examples, this can be accomplished by providing the user with headphones (e.g., noise-canceling headphones) that can output sound from the VR device and / or limit the user from hearing noise from their physical environment. In some examples, the VR device can output sound at a volume sufficient to limit the user from hearing ambient noise.

[0016] In any example, the user may not want to be overstimulated (e.g., by both their physical environment and the virtual environment). 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.

[0017] Different types of VR devices are described below. Often, a single VR device may include at least two different classifications. For example, a VR device may be classified based on its portability and how the display unit is connected to the rest of the interface. These classifications may be independent, such that a classification in one group (e.g., portability of the unit) does not predetermine a classification in another group. There may also be additional categories to classify VR devices that are not explicitly listed below.

[0018] 2.2.2.1 Portability

[0019] 2.2.2.1.1 Fixed unit

[0020] In some forms, the VR device may be used in conjunction with a separate device, such as a computer or video game console. This type of VR device may be stationary in that the VR device cannot be used without the computer or video game console, and thus the locations where the VR device may be used are limited (e.g., by the location of the computer or video game console).

[0021] Since the VR device can be used in conjunction with a computer or video game console, the VR device can be connected to the computer or video game console. For example, a wire can tether the two systems together. This can further "fix" the position of the VR device, because the user wearing the VR device cannot move farther from the computer or video game console than the length of the wire. In other examples, the VR device can be connected wirelessly (e.g., via Bluetooth, Wi-Fi, etc.), but can still be relatively fixed by the strength of the wireless signal.

[0022] A connection to a computer or video game console may provide control functionality to the VR device. Controls may be transmitted (i.e., through a wired connector or wirelessly) to help operate the VR device. In the example of a fixed unit VR device, these controls may be necessary to operate the display screen, and the VR device may be inoperable without a connection to the computer or video game console.

[0023] In some forms, a computer or video game console can provide power to the VR device so that the user does not need to support a battery 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 battery.

[0024] 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 may provide the user with a more immersive experience while using the computer or video game console (e.g., playing a video game). In other words, the display output of the VR device may be substantially the same as the output from a computer monitor or television. Some of the controllers and / or sensors necessary to output these images may be housed in the computer or video game console, which may further reduce the weight that the user needs to support on his or her body.

[0025] In some forms, the motion sensor may be located away from the VR device and connected to a computer or video game console. For example, at least one camera may face the user so as to track the movement of the user's head. Processing of the data recorded by the camera may be done by the computer or video game console before being sent to the VR device. While this may help reduce the weight of the VR device, it may also further limit where the VR device can be used. In other words, the VR device must be within the line of sight of the camera.

[0026] 2.2.2.1.2 Portable unit

[0027] In some forms, the VR device may be a stand-alone unit that includes a power source and sensors such that the VR device does not need to be connected to a computer or video game console. This provides the user 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 may use the VR device outdoors or in other environments that do not include a computer or television.

[0028] Since the VR device is not connected to a computer or video game console when in use, the VR device is 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 increase discomfort for the user wearing the VR device.

[0029] In some forms, the electronic components of the VR device are contained in a single housing that can be placed directly in front of the user's face when in use. This structure can be referred to as a "brick". In this structure, the center of gravity of the VR device without the positioning and stabilizing structure is directly in front of the user's face. In order to counter the moment generated by gravity, the positioning and stabilizing structure coupled to the brick configuration must provide a force directed toward the user's face, such as the force generated by the tension in the headgear straps. While the brick construction may be beneficial for manufacturing (e.g., because all electrical components are in close proximity) and may allow for the interchangeability of the positioning and stabilizing structures (e.g., because they do not include electrical connections), the force required to maintain the position of the VR device (e.g., the tension in the headgear) may be uncomfortable for the user. Specifically, the VR device may dig into the user's face, causing irritation and marking on the user's skin. When the user's head receives forces from the display housing on their face and from the headgear on the back of their head, the combination of forces can feel like "clamping". This can make the user less likely to wear the VR device.

[0030] Because VR and other mixed reality devices may 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 pressing the device more tightly against the user's head to withstand the large breaking forces may be unacceptable because this may be uncomfortable for the user or become uncomfortable after only a short time.

[0031] In some forms, the electronic components may be spaced throughout the VR device, rather than being entirely in front of the user's face. For example, some electrical components (e.g., a battery) may be disposed on the positioning and stabilizing structure, and in particular on the rear contact portion. In this way, the weight of the battery (or other electronic components) may produce a moment directed in a direction opposite to the moment produced 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 produces lower forces acting 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 may be more difficult due to the electrical connections.

[0032] In some forms, spacing the electrical components apart may include positioning some of the electrical components separate 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 may be portable along with the rest of the VR device. 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 will not provide an offsetting 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" configuration.

[0033] 2.2.2.2 Display Connection

[0034] 2.2.2.2.1 Integrated display

[0035] 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.

[0036] The display screen can be fixed in the housing and protected from damage. For example, the display screen can be completely covered by the housing, which can reduce the occurrence of scratches. In addition, integrating the display screen with the rest of the VR device eliminates the occurrence of losing the display screen.

[0037] In these forms, the display screen is used purely as an immersive technology display. The vast majority of "fixed units" will include an integrated display screen. "Portable units" may include an integrated display screen, or may include a removable display screen (described below).

[0038] 2.2.2.2.2 Movable display screen

[0039] In some forms, the display screen is a separate structure that can be removed from the VR device and used separately.

[0040] 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 a virtual environment through a downloadable application.

[0041] Portable electronic devices are generally lightweight and may not require positioning and stabilizing structures to apply high forces to the user's head.

[0042] 2.2.3 Augmented Reality

[0043] In some forms, augmented reality (AR) is a computer-generated three-dimensional image or environment presented to a user.

[0044] Although similar to VR, AR differs in that the virtual environment, created at least in part by an electronic screen, is viewed in conjunction with the user's physical environment. In other words, AR creates virtual objects so as to alter and / or augment the user's physical environment 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.

[0045] For example, an image created by an electronic screen may be overlaid onto the user's physical environment. Only a portion of the AR combined environment presented to the user is virtual. Thus, the user may wish to continue to receive environmental stimuli from their physical environment while using the AR device (e.g., in order to continue to observe physical or non-virtual components of the combined environment).

[0046] 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 a variety of physical environments while using the AR device.

[0047] This key difference between VR and AR may result in different types of wearable electronic screens. As described above, users of VR devices may want to block ambient light, so the housing of the electronic screen may be opaque in order to limit or prevent ambient light from reaching the user. However, users of AR devices may want to see a virtual environment mixed with their actual environment. The electronic screen in the AR device may be similarly supported in front of the user's eyes, but the screen in the AR device may 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 line of sight). This may allow the user to continue to receive environmental stimuli while the virtual environment is present at the same time. 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 acquiring 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 a display screen.

[0048] Additionally, a person using an AR device may move more than a person using a VR device (e.g., because an AR user can see their physical environment and / or is not tethered to a computer or video game console). Thus, a person using an AR device may wish to wear the device for extended periods of time while also moving around (e.g., walking, running, biking, etc.). Including components such as a battery 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.

[0049] 2.2.4 Mixed Reality

[0050] Mixed reality (MR) is similar to AR, but may be more immersive because MR devices may provide users with more ways to interact with virtual objects or environments than AR devices. Virtual reality in MR may also overlay and / or mix with the user's physical environment. However, unlike AR, the user may be able to interact with the virtual environment similar to what occurs in VR. In other words, while AR may only present computer-generated images in a physical environment, MR may 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" virtually generated objects). Therefore, the virtual environment can be further merged with the physical environment so that the merged environment better replicates the actual environment.

[0051] 2.2.5 Head-mounted display interface

[0052] 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 games.

[0053] 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). A head mounted display interface can also provide partial immersion consistent with using an AR device.

[0054] A VR head mounted display interface is typically provided as a system comprising a display unit arranged to be maintained in an operating position in front of a user's face. The display unit typically comprises a housing containing a display and a user interface structure, the user interface structure being constructed and arranged to be opposite to the user's face. The user interface connection structure may extend around the display and together with the housing define a viewing opening for the display. The user interface connection structure may engage with the face and include padding for user comfort and / or be light-sealed to block ambient light from the display. The head mounted display system further comprises a positioning and stabilizing structure arranged on the user's head to hold the display unit in place.

[0055] Other head mounted display interfaces can provide less than a total immersive experience. In other words, the user can experience their physical environment as well as elements of the virtual environment. Examples of less than a total immersive experience are augmented reality (AR) and mixed reality (MR).

[0056] AR and / or MR head-mounted display interfaces are also typically provided as a system including a display unit that is arranged to remain in an operating position in front of the user's face. Similarly, the display unit typically includes a housing containing a display and a user interface structure that is constructed and arranged to be opposite to the user's face. The head-mounted display system of the AR and / or MR head-mounted display is also similar to VR in that it also includes a positioning and stabilization structure that is arranged on the user's head to keep the display unit in place. However, the AR and / or MR head-mounted display does not include a pad that completely seals out ambient light from the display, because these less than fully immersive experiences require 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.

[0057] 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 is able to provide changing images as the position and / or orientation of the user's head changes so as to create an environment that resembles or replicates a fully physical environment, whether partially or fully virtual.

[0058] 2.2.5.1 Interface connection structure

[0059] A head mounted display may include a user interface connection structure. Since it is in direct contact with the user's face, the shape and configuration of the interface connection portion may directly affect the effectiveness and comfort of the display unit.

[0060] The design of user interface connection structures presents many challenges. The face has a complex three-dimensional shape. The size and shape of the nose and head vary greatly between individuals. Because the head is composed of bone, cartilage, and soft tissue, different areas of the face respond differently to mechanical forces.

[0061] One type of interfacing structure extends around the perimeter of the display unit and, when force is applied to the user interface, engages face-to-face with the user's face, thereby sealing the user's face. The interfacing structure may include a cushion made of polyurethane (PU). With this type of interfacing structure, there may be a gap between the interfacing structure and the face, and additional force may be required to force the display unit against the face in order to achieve the desired contact.

[0062] Areas that are not engaged at all by the user interface 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. In addition, previous systems can be difficult to adjust to enable application to a variety of different head sizes. In addition, the display unit and associated stabilizing structures are often relatively heavy and can be difficult to clean, which further limits the comfort and usability of the system.

[0063] Another type of interfacing structure includes a sheet seal of thin material located 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 interfacing structures, if the match between the surface and the interfacing structure is not good, additional force may be required to achieve a seal, or light may leak into the display unit in use. In addition, if the shape of the interfacing structure does not match the shape of the user, it may wrinkle or bend during use, resulting in undesirable light penetration.

[0064] The interface connection structure that prevents light leakage and makes the user comfortable to wear is usually made of a material that forms at least a partial airtight seal with the user's face. This may result in a lack of air circulation in the volume between the user's face and the display screen. The captured air can be heated by the user's skin and, in some cases, by heat exhausted from the electronic devices associated with the head-mounted display unit. This may cause the temperature of the captured air to become very warm.

[0065] Another result of the heated air may be sweating on the user's face in an attempt to lower its temperature. This may be uncomfortable for the user and may also cause the humidity of the captured air to increase. Moisture may then condense from the humid air onto the inner surface of the head mounted display unit (e.g., display screen and / or lens) and / or the user's glasses (if they wear them).

[0066] The user interface can be characterized in part according to the design intent that the interface connection structure will engage with the face in use. Some interface connection structures may be limited to engaging with areas of the user's face that protrude beyond the curved arc of the face engagement surface of the interface connection structure. These areas may typically include the user's forehead and cheekbones. This may cause user discomfort at localized pressure points. Other facial areas may not be engaged by the interface connection structure at all, or may be engaged only in a negligible manner, which may not be sufficient to increase the translation distance of the clamping pressure. These areas may typically include the sides of the user's face, or areas adjacent to and surrounding the user's nose. To the extent there is a mismatch between the shape of the user's face and the interface connection structure, it is advantageous that the interface connection structure or related components are adaptable so as to form an appropriate contact or other relationship.

[0067] 2.2.5.2 Positioning and stabilization

[0068] In order to keep the display unit in its correct operating position, the head-mounted display system also includes a positioning and stabilizing structure disposed on the user's head. These structures may be responsible for providing a force to counteract the gravity of the head-mounted display and / or the interface connection structure. In the past, these structures were formed of an expandable rigid structure that was usually applied to the head under tension to keep the display unit in its operating position. Such systems tend to apply clamping pressure on the user's face, which may cause discomfort to the user at local pressure points. Moreover, previous systems may be difficult to adjust to allow for a wide application head size. In addition, the display unit and the associated stabilizing structure are typically heavy and difficult to clean, which further limits the comfort and usability of the system.

[0069] Certain other head mounted display systems may not be functionally suitable for use in this field. For example, positioning and stabilization structures designed for decorative and visual aesthetics may not have the structural ability to maintain appropriate pressure around the face. For example, excessive clamping pressure may cause discomfort to the user, or insufficient clamping pressure on the user's face may not effectively seal the display from ambient light.

[0070] Certain other head mounted display systems may be uncomfortable or impractical for the present technology, for example if the system is used for an extended period of time.

[0071] As a result of these challenges, some head mounted displays suffer from one or more of being obtrusive, aesthetically undesirable, expensive, ill-fitting, difficult to use, and uncomfortable, particularly when worn for extended periods of time or when the user is unfamiliar with the system. Incorrectly sized positioning and stabilizing structures can reduce comfort and, in turn, usage time.

[0072] Thus, the interfacing 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.

[0073] 2.2.5.3 Materials

[0074] Materials used in head mounted display assemblies include dense foams for portions of the contact interface connection structure, rigid shells for the housing, and positioning and stabilization structures formed from 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 such materials can be uncomfortable when worn for extended periods of time, causing skin irritation in some individuals and limiting the application of the product. Summary of the invention

[0075] The present technology may be directed to providing a positioning and stabilizing structure 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.

[0076] A first aspect of the present technology relates to an apparatus for use in supporting, stabilizing, mounting, utilizing and / or securing a head mounted display.

[0077] Another aspect of the present technology relates to a method for supporting, stabilizing, mounting, utilizing and / or securing a head mounted display.

[0078] Another aspect of the present technology relates to an interface connection structure for a head-mounted display unit, the head-mounted display unit being constructed and arranged to be in relative relationship with a user's face, the interface connection structure including a base frame, the base frame including a wall and at least one vent extending through the wall, the vent having a first opening on an inner surface of the wall and a second opening on an outer surface of the wall, wherein the vent is substantially linear between the first opening and the second opening, and wherein the base frame includes a light shielding portion, the light shielding portion being configured to block light from the vent from entering the user's eyes.

[0079] Another aspect of the present technology relates to an interface connection structure for a head-mounted display unit, the head-mounted display unit being constructed and arranged to be in relative relationship with a user's face, the interface connection structure including a base frame, the base frame including a wall and at least one vent extending through the wall, the vent having a first opening on an inner surface of the wall and a second opening on an outer surface of the wall, wherein the vent is configured to allow light to pass from the second opening to the first opening, and wherein the base frame includes at least one light shielding portion, the light shielding portion being configured to block light from the vent from entering the user's eyes.

[0080] In the example:

[0081] The chassis includes a plurality of said vent holes;

[0082] The plurality of vent holes include a plurality of vent hole groups, the plurality of vent hole groups include a first vent hole group and a second vent hole group, the first vent hole group is arranged at an upper portion of the wall, and the second vent hole group is arranged at a lower portion of the wall;

[0083] the wall extends between a rear position and an anterior position, wherein the anterior position of the side portion of the wall is located in front of the frontal bone of the user in use;

[0084] the light shielding portion comprises a surface extending substantially parallel to the inner surface of the wall, wherein the surface is positioned so that any light passing through the vent impinges on the surface;

[0085] The light shielding portion is open toward the rear side of the chassis;

[0086] Each vent has a length, a width and a height, wherein the length is greater than at least one of the width and the height;

[0087] Each vent is configured as a slot;

[0088] The vent has a linear centerline between the first opening and the second opening;

[0089] The vent has a constant cross section between the first opening and the second opening;

[0090] The interface connection structure includes a facial engagement portion;

[0091] the face engaging portion being configured to provide, in use, an air path between an exterior of the chassis and an interior of the chassis, wherein the air path is provided between the face engaging portion and a surface of the user's nose;

[0092] the chassis comprising a first chassis portion configured to engage the display unit and a second chassis portion configured to support the face engaging portion;

[0093] The first chassis part has a greater stiffness than the second chassis part;

[0094] The second chassis portion is at least partially made of a resilient material;

[0095] providing at least one vent in said second chassis portion;

[0096] The at least one light shield is made of an elastic material;

[0097] providing at least one vent in said first chassis portion;

[0098] The first chassis portion comprises a base chassis portion and a vent surrounding portion, wherein at least one vent is provided in the vent surrounding portion;

[0099] The base chassis is made of a first material and the vent surrounding portion is made of a second material having a lower stiffness than the first material;

[0100] the vent surrounding portion is made of the same material as the second chassis portion; and / or

[0101] The chassis comprises a bridging portion between the vent surround portion and the second chassis portion, wherein the bridging portion is made of the same material as the vent surround portion and the second chassis portion.

[0102] Another aspect of the present technology relates to an interface connection structure for a head-mounted display unit, which is constructed and arranged to be in relative relationship with a user's face, the interface connection structure including a base frame, the base frame including a wall, the wall extending between a rear position and a front position, wherein the front position of multiple sides of the wall is located in front of the user's frontal bone during use; and at least one vent extending through the wall, the vent having a first opening on an inner surface of the wall and a second opening on an outer surface of the wall, wherein the vent is substantially linear between the first opening and the second opening, and wherein the base frame includes at least one light shielding portion, the at least one light shielding portion being configured to block light from the vent from entering the user's eyes.

[0103] Another aspect of the present technology relates to an interface connection structure for a head-mounted display unit, which is constructed and arranged to be in relative relationship with a user's face, the interface connection structure including a base frame, the base frame including a wall, the wall extending between a rear position and a front position, wherein the front position of multiple sides of the wall is located in front of the user's frontal bone during use; and at least one vent extending through the wall, the vent having a first opening on an inner surface of the wall and a second opening on an outer surface of the wall, wherein the vent is configured to allow light to pass from the second opening to the first opening, and wherein the base frame includes at least one light shielding portion, the light shielding portion being configured to block light from the vent from entering the user's eyes.

[0104] Another aspect of the present technology relates to a head mounted display system, comprising:

[0105] a head mounted display unit; and

[0106] a positioning and stabilizing structure constructed and arranged to hold the head mounted display unit in an operating position above a user's face in use,

[0107] The head mounted display unit includes:

[0108] Display unit housing;

[0109] an interfacing structure constructed and arranged to be in opposing relationship with the user's face, the interfacing structure comprising a face engaging portion configured to engage the user's face in use;

[0110] The interface connection structure includes a chassis, the chassis and the display unit housing at least partially defining an internal volume, the chassis including a wall and at least one vent extending through the wall, the vent having a first opening on an inner surface of the wall and a second opening on an outer surface of the wall, wherein the vent is configured to allow passage of light from the second opening to the first opening, and

[0111] The base frame includes at least one light shielding portion, and the at least one light shielding portion is configured to block light from entering the user's eyes through the vent hole.

[0112] Another aspect of the present technology relates to a head mounted display system, comprising:

[0113] a head mounted display unit; and

[0114] a positioning and stabilizing structure constructed and arranged to hold the head mounted display unit in an operating position above a user's face in use,

[0115] The head mounted display unit includes:

[0116] Display unit housing;

[0117] an interfacing structure constructed and arranged to be in opposing relationship with the user's face, the interfacing structure comprising a face engaging portion configured to engage the user's face in use;

[0118] The interface connection structure includes a chassis, the chassis and the display unit housing at least partially defining an internal volume, the chassis including:

[0119] a wall extending between a rear position and an anterior position, wherein the anterior position of the side of the wall is located in use in front of the frontal bone of the user; and

[0120] at least one vent extending through the wall, the vent having a first opening on an interior surface of the wall and a second opening on an exterior surface of the wall, wherein the vent is configured to allow passage of light from the second opening to the first opening, and

[0121] The base frame includes at least one light shielding portion, and the at least one light shielding portion is configured to block light from entering the user's eyes through the vent hole.

[0122] Another aspect of the present technology includes a display interface comprising:

[0123] a display screen configured to output a computer-generated image observable by a user;

[0124] a display housing at least partially supporting the display screen;

[0125] an interface structure coupled to the display screen and / or the display housing, the interface structure being configured to be positioned and / or arranged to conform to at least a portion of the user's face;

[0126] a positioning and stabilizing structure configured to maintain the position of the display screen and / or the display housing relative to the user's eyes, the positioning and stabilizing structure configured to provide a force to the user's head to counteract the moment generated by the weight of the display screen and / or the display housing; and

[0127] a control system configured to assist in controlling the computer-generated image viewable by the user, the control system comprising at least one sensor,

[0128] wherein the interface connection structure comprises at least one vent, the vent comprising at least one vent opening extending between an inner surface of the interface connection structure and an outer surface of the interface connection structure,

[0129] The interfacing structure further comprises at least one light blocking portion for the vent aperture, the light blocking portion being configured to, in use, substantially prevent all ambient light transmitted through the vent aperture from reaching the user's eyes.

[0130] Another aspect of the present technology includes a display interface comprising:

[0131] a display screen configured to output a computer-generated image observable by a user;

[0132] a display housing at least partially supporting the display screen;

[0133] an interface connection structure coupled to the display screen and / or the display housing, the interface connection structure being configured to be positioned and / or arranged to conform to at least a portion of the user's face, wherein the interface connection structure comprises a wall extending between a rear position and an anterior position, wherein the anterior position of a side portion of the wall is located in front of a frontal bone of the user in use;

[0134] a positioning and stabilizing structure configured to maintain the position of the display screen and / or the display housing relative to the user's eyes, the positioning and stabilizing structure configured to provide a force to the user's head to counteract the moment generated by the weight of the display screen and / or the display housing; and

[0135] a control system configured to assist in controlling the computer-generated image viewable by the user, the control system comprising at least one sensor,

[0136] wherein the interface connection structure comprises at least one vent, the vent comprising at least one vent opening extending between an inner surface of the interface connection structure and an outer surface of the interface connection structure,

[0137] The interfacing structure further comprises at least one light blocking portion for the vent aperture, the light blocking portion being configured to, in use, substantially prevent all ambient light transmitted through the vent aperture from reaching the user's eyes.

[0138] 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 in use.

[0139] In some forms, the rear support portion, or at least a portion thereof, is arranged rearward of a point above the ear of the user.

[0140] In some forms, the rear support portion is biased into contact with the occipital region of the user.

[0141] 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 a front support portion that connects the rear support portion to the head mounted display unit.

[0142] The present technology may also be directed to providing an interface connection structure for supporting, cushioning, stabilizing, positioning and / or sealing a head mounted display in relation to a user's face.

[0143] Another aspect relates to an apparatus for supporting, cushioning, stabilizing, positioning and / or sealing a head mounted display in relation to a user's face.

[0144] Another aspect relates to a method for supporting, cushioning, stabilizing, positioning and / or sealing a head mounted display in relation to a user's face.

[0145] Another form of the present technology includes a head mounted display system for a person, the head mounted display system comprising:

[0146] A head mounted display unit comprising a display;

[0147] A control system for controlling the operation of the head mounted display system; and

[0148] A positioning and stabilising structure is configured to hold the head mounted display unit in front of the eyes of a user so that the display is viewable by the user during use.

[0149] The head mounted display system may be helmet mounted, may be configured for virtual reality display, may be configured for augmented reality display, or may be configured for mixed reality display.

[0150] Another form of the present technology includes a head mounted display system for a person, the head mounted display system comprising:

[0151] A head mounted display unit comprising a display;

[0152] A control system for controlling the operation of the head mounted display system; and

[0153] A positioning stabilizing structure comprising a front support portion and a rear support portion, wherein:

[0154] the rear portion being configured to engage a rear region of the person's head in use;

[0155] The front support part includes:

[0156] a left side portion configured to interconnect the rear support portion and the head mounted display system; and

[0157] A right side portion is configured to interconnect the rear portion and the head mounted display system.

[0158] One aspect of one form of the present technology is a method of making a device.

[0159] One aspect of some forms of the present technology is a positioning and stabilizing structure that is easy to use, such as by people with limited dexterity, vision, or by people with limited experience in using head mounted displays.

[0160] One aspect of some forms of the present technology is an interfacing 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.

[0161] The described methods, systems, devices, and apparatus may be implemented to improve the functionality of a head mounted display such as an electronic display or a computer. In addition, the described methods, systems, devices, and apparatus may provide improvements in the technical fields of virtual reality, augmented reality, and / or mixed reality.

[0162] Of course, a part of these aspects may form a sub-aspect of the present technology. In addition, each aspect in the sub-aspect and / or aspect may be combined in various ways, and also constitute other aspects or sub-aspects of the present technology.

[0163] Other features of the present technology will become apparent from consideration of the information contained in the following detailed description, abstract, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0164] The present technology is illustrated by way of example and not limitation in the accompanying drawings in which like reference numerals represent similar elements, including:

[0165] 4.1 Head-mounted display system

[0166] Figure 1A A system is shown that includes 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.

[0167] Figure 1B A system is shown including a user 100 wearing a head mounted display system 1000 in the form of a floating virtual reality (VR) headset displaying various images to the user.

[0168] Figure 1C A system is shown including a user 100 wearing a head mounted display system 1000 in the form of a floating augmented reality (AR) headset displaying various images to the user.

[0169] 4.2 Display system and facial anatomy

[0170] Figure 2A A view of the human upper airway including the nasal cavity, nasal bones, external nasal cartilages, greater alar cartilages, nostrils, supralabial, infralabial, larynx, hard palate, soft palate, oropharynx, tongue, epiglottis, vocal cords, esophagus, and trachea is shown.

[0171] Figure 2B is a front view of the face with several surface anatomical features identified, including the upper lip, upper vermilion, lower vermilion, lower lip, mouth width, medial canthus, nasal wing, nasolabial fold, and corner of mouth. The directions of superior, inferior, radially inward, and radially outward are also indicated.

[0172] Figure 2C It is a side view of the head with several surface anatomical features labeled, including the glabella, nasal bridge point, nasal prominence point, subseptal point, supra-lip, sub-lip, supra-mental point, nasal ridge, nasal apex, supra-auricular point, and subauricular point. The superior-inferior and anterior-posterior directions are also indicated.

[0173] Figure 2D This is another lateral view of the head. The approximate location of the Frankfort horizontal plane and the nasolabial angle are indicated. The coronal plane is also indicated.

[0174] Figure 2E A bottom view of the nose is shown with several features identified, including the nasolabial folds, lower lip, upper vermillion, nostrils, inferior point of the nasal septum, columella, pronasal point, long axis of the nostrils, and midsagittal plane.

[0175] Figure 2F A side view of the nasal surface features is shown.

[0176] 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 bone, epidermis, adipose tissue, frontal process of the maxilla, and fibroadipose tissue.

[0177] Figure 2H The medial anatomy of the nose is shown approximately a few millimeters from the mid-sagittal plane, showing, among other things, the medial crus of the septal cartilage and the greater alar cartilage.

[0178] Fig.2I A frontal view of the skull is shown, including the frontal, nasal, and zygomatic bones. The nasal turbinates, as well as the maxilla and mandible are also indicated.

[0179] 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, nasal, zygomatic, maxillary, mandibular, parietal, temporal, and occipital. The mental protuberance is also indicated. The following muscles are shown: digastric, masseter, sternocleidomastoid, and trapezius.

[0180] Figure 2K An anterolateral view of the nose is shown. The following bones are shown: frontal, supraorbital foramen, nose, septal cartilage, lateral cartilage, orbit, and infraorbital foramen.

[0181] Figure 2L Another anterior view of the face is shown with several surface anatomical features identified, including the parietal muscles, sphenoid bone, nasal ridge, external and internal cheek areas, zygomatic arches, and alar roof.

[0182] Figure 2M Another lateral view of the face is shown with several surface anatomical features identified, including the parietal muscles, sphenoid bone, nasal ridge, external and internal cheek regions, zygomatic arches, and alar roof.

[0183] 4.3 Shape of the structure

[0184] Figure 3A A schematic diagram of a 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 positive sign and is Figure 3B The curvature magnitude shown is relatively large in comparison.

[0185] Figure 3B A schematic diagram of a 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 positive sign and is Figure 3A The curvature magnitude shown is relatively small in comparison.

[0186] Figure 3C A schematic diagram of a 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.

[0187] Figure 3D A schematic diagram of a 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 negative sign and is Figure 3E The curvature magnitude shown is relatively small in comparison.

[0188] Figure 3E A schematic diagram of a 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 negative sign and is Figure 3D The curvature magnitude shown is relatively large in comparison.

[0189] Figure 3F A surface having a structure with a one-dimensional hole on the surface is shown. The plane curves shown form the boundaries of the one-dimensional hole.

[0190] Figure 3G Shown through Figure 3F The surface shown is in the cross section of the structure. Figure 3F A two-dimensional hole is defined in the structure.

[0191] Figure 3H Shows Figure 3F A perspective view of the structure of includes two-dimensional holes and one-dimensional holes. Also shown is the Figure 3F The surface of the two-dimensional holes is defined in the structure.

[0192] Figures 3I-3J The seal forming structure is shown. The outer surface of the gasket is indicated. The edge of the surface is indicated. The path on the surface between points A and B is indicated. The straight line distance between A and B is indicated. The two saddle areas and the dome area are indicated.

[0193] Figure 3K The left hand rule is shown.

[0194] Figure 3L The right hand rule is shown.

[0195] Figure 3M The left ear is shown, including the left ear helix.

[0196] Figure 3NThe right ear is shown, including the right ear helix.

[0197] Fig.3O A right-hand helix is ​​shown.

[0198] 4.4 Head-mounted Virtual Reality Display

[0199] Figure 4A Shown is a front perspective view of a head mounted display interface in accordance with one form of the present technology.

[0200] Figure 4B Shows Figure 4A A rear perspective view of the head-mounted display.

[0201] Figure 4C Shown with Figure 4A A perspective view of a positioning and stabilization structure for use with a head mounted display.

[0202] Figure 4D A front view of a user's face is shown, illustrating the position of the interfacing structure in use.

[0203] 4.5 Head-mounted Augmented Reality Display

[0204] Figure 5A Shown is a front perspective view of a head mounted display interface in accordance with one form of the present technology.

[0205] Figure 5B Shows Figure 5A A side view of the head mounted display interface.

[0206] 4.6 Control

[0207] Figure 6 A schematic diagram showing a control system of one form of the present technology.

[0208] 4.7 Head-mounted display unit and its interface connection structure

[0209] Figure 7 Shown is a front perspective view of a head mounted display interface in accordance with one form of the present technology.

[0210] Figure 8 Shows Figure 7 A front perspective view of an interface connection structure of a head mounted display.

[0211] Fig. 9 Shows Figure 8 A side perspective view of an interface connection structure.

[0212] Fig.10 Shows Figure 8 A front perspective view of a first chassis portion of an interface connection structure.

[0213] Fig.11 Shows Figure 8 A front view of a first chassis portion of an interface connection structure.

[0214] Fig.12 Shows Figure 8 A rear perspective view of the first chassis portion of the interface connection structure.

[0215] Fig.13 Shows Figure 8 A rear view of the first chassis portion of the interface connection structure.

[0216] Fig.14 Shown is a cross section through a set of vents according to one form of the present technology.

[0217] Fig.15 Shown is a cross section through a set of vents according to one form of the present technology.

[0218] Fig.16 Shown is a cross section through a set of vents according to one form of the present technology.

[0219] Fig.17 A diagrammatic view of a portion of a chassis equipped with vents in accordance with one form of the present technology is shown.

[0220] Fig.18 Shown is a simulated side view of air flow around a head mounted display interface in accordance with one form of the present technology.

[0221] Fig.19 Shown is a simulated front view of air flow around and through a head mounted display interface in accordance with one form of the present technology.

[0222] Figures 20A to 20C A diagram showing an interface connection structure of a head mounted display according to one form of the present technology.

[0223] Figures 21A to 21C A view showing an interfacing structure for a head mounted display according to one form of the present technology, the interfacing structure including a plurality of vent groups.

[0224] Fig.22A Shows Figures 21A to 21C A front view of a chassis of an interface connection structure.

[0225] Fig. 22B A cross section through an upper vent group according to one form of the present technology is shown (see Fig.22A 22B-22B).

[0226] Fig. 22C A cross section through a lower set of vent holes according to one form of the present technology is shown (see Fig.22A 22C-22C).

[0227] Fig.22D A perspective view of the chassis is shown.

[0228] Fig.22E A top perspective view of the chassis is shown.

[0229] Fig.22F A top view of the chassis is shown.

[0230] Figure 22G A side view of the chassis is shown.

[0231] Fig.23 Shown is a cross section of a chassis of an interfacing structure according to one form of the present technology.

[0232] Fig.24A A perspective view of an interfacing structure according to one form of the present technology is shown having a chassis including a vent array.

[0233] Fig. 24B A cross section through one of the vent sets in the chassis is shown.

[0234] Fig.25A A perspective view of an interfacing structure according to one form of the present technology is shown having a chassis including a vent array.

[0235] Fig.25B A cross section through the set of vent holes in the chassis is shown. DETAILED DESCRIPTION

[0236] Before describing the present technology in further detail, it should be understood that the present technology is not limited to the specific examples described herein, which may be varied. It should also be understood that the terminology used in the present disclosure is only for the purpose of describing the specific examples described herein and is not intended to be limiting.

[0237] The following description is provided in relation to 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, in any of the examples, any single feature or combination of features may constitute another example.

[0238] 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 accompanying 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 disclosure as generally described herein and shown in the accompanying drawings may be arranged, substituted, combined, separated, and designed into a variety of different configurations, all of which are contemplated in the present disclosure.

[0239] 5.1 Immersive Technology

[0240] Immersive technology can present a user with a combination of a virtual environment and the user's physical environment or the real world. The user can interact with the resulting immersive or combined reality.

[0241] The device immerses the user by augmenting or replacing the stimulus associated with one of the user's five senses with a virtual stimulus. Typically, this is a virtual stimulus, although there may be additional stimuli that augment or replace the stimulus associated with one of the additional four senses.

[0242] In some forms, a particular immersive technology may present a combination of a virtual environment and a user environment to the user. At least a portion of the resulting environment may include the virtual environment. In some examples, the entire resulting environment may be a virtual environment (e.g., meaning that the user environment may be blocked from view or otherwise obscured). In other forms, at least a portion of the user's physical environment may still be visually observable.

[0243] 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 a different way to interact with the environment.

[0244] 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., the combination of the virtual environment and the user environment). In some forms, the display screen can be an electronic screen.

[0245] In at least some types of immersive technologies (e.g., VR, AR, MR, etc.), positioning and stabilizing electronic screens may be useful in operating the corresponding devices. For example, users may want the electronic screen to be positioned close enough to their eyes to allow easy viewing, but far enough away so as not to cause discomfort. In addition, the electronic screen may need to be spaced far enough apart so that the user can simultaneously wear corrective lenses, such as glasses. In addition, the user can try to maintain the orientation of the electronic screen relative to their eyes. In other words, users who walk or otherwise move while using these devices may not want the device to bounce on their heads or otherwise move (e.g., particularly relative to their eyes) because this may cause dizziness and / or discomfort to the user. Therefore, these devices can be supported snugly on the user's head to limit the relative movement between the user's eyes and the device.

[0246] In one form, the technology includes a method of using a VR device, the method comprising supporting the device on a user's head, near at least one eye of the user, and within the user's line of sight.

[0247] 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.

[0248] Any features disclosed below in the context of a device configured for VR should be understood to be applicable to a device configured for AR, unless the context clearly requires otherwise. The same features disclosed below in the context of a device configured for AR will be understood to be applicable to a device configured for VR, unless the context clearly requires otherwise. For the avoidance of doubt, features disclosed in the context of a device without a transparent display (through which a user can view the real world) should be understood to be applicable to a device with such a transparent display, 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) should be understood to be applicable to such a device in which the display is electronic and the real world cannot be directly viewed through the transparent material.

[0249] 5.2 Virtual Reality Display System

[0250] 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 connection structure 1100, a head-mounted display unit 1200 and a positioning and stabilization structure 1300. In some forms, the functional aspects may provide 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 the user's eyes to allow the user to view the display.

[0251] 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 an integral piece 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 desired by the user.

[0252] 5.2.1 Head-mounted display unit

[0253] 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 (eg, manually, by a positioning and stabilizing structure, etc.).

[0254] In some examples, the head mounted display unit 1200 may include a display screen 1220, a display unit housing 1205, an interface connection structure 1100, and / or an optical lens 1240. These components may be permanently assembled in a single head mounted display unit 1200, or they may be separable and selectively connected by a user to form the head mounted display unit 1200. In addition, the display screen 1220, the display unit housing 1205, the interface connection structure 1100, and / or the optical lens 1240 may be included in the head mounted display system 1000, but may not be part of the head mounted display unit 1200.

[0255] 5.2.1.1 Display

[0256] Some forms of head mounted display unit 1200 include a display, such as a display screen (on 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.

[0257] 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 a virtual object.

[0258] The display screen may be located near the user's eyes to allow the user to view the display screen. For example, the display screen may be located in front of the user's eyes. The display screen may output computer-generated images and / or virtual environments.

[0259] In some forms, the display screen is an electronic display. The display screen may be a liquid crystal display (LCD) or a light emitting diode (LED) screen.

[0260] In some forms, the display screen may include a backlight that can help illuminate the display screen. This may be particularly beneficial when viewing the display screen in a dark environment.

[0261] 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.

[0262] In some forms, the display screen can display at least one image observable by the user. For example, the display screen can display an image that changes based on predetermined conditions (e.g., the passage of time, the movement of the user, input from the user, etc.).

[0263] In some forms, portions 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., right eye) and blocked from view from the other eye (e.g., left eye).

[0264] In one example, the 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 either side).

[0265] Each side of the display screen can display a similar image. In some examples, the images can be the same, while in other examples, the images can be slightly different.

[0266] 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., non-identical) images can allow the user to view virtual objects in their periphery and expand their field of view in the virtual environment.

[0267] In some forms, 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.

[0268] 5.2.1.2 Display housing

[0269] In such Figure 4A and 4B In some forms of the technology shown, the display unit housing 1205 provides a support structure for the display screen so as 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 providing protection to 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.

[0270] The display unit housing 1205 according to some forms of the present technology may be constructed from a hard, rigid or semi-rigid material (eg, plastic).

[0271] 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 a portion of the display unit housing 1205 that a user engages (e.g., grasps with their hand) includes a soft and / or flexible material.

[0272] Other forms of display unit housing 1205 according to the present technology may be formed of a soft, flexible, elastic material (eg, silicone rubber).

[0273] In some forms, the display unit housing 1205 may have a substantially rectangular or substantially elliptical profile.The display unit housing 1205 may have a three-dimensional shape having a substantially rectangular or substantially elliptical profile.

[0274] 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 held within the face during use.

[0275] In certain forms, upper surface 1230 and lower surface 1232 may have substantially the same shape.

[0276] In one form, the upper surface 1230 and the lower surface 1232 may be substantially planar and extend along parallel planes (eg, substantially parallel to the Frankfurt level in use).

[0277] In some forms, lateral left surface 1234 and lateral right surface 1236 may have substantially the same shape.

[0278] 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 putting on and / or taking off the head mounted display system 1000.

[0279] In some forms, front surface 1238 may extend between upper surface 1230 and lower surface 1232. Front surface 1238 may form a front-most portion of head mounted display system 1000.

[0280] In one form, the front surface 1238 can be a substantially flat surface and can be substantially parallel to the frontal plane while the head mounted display system 1000 is worn by a user.

[0281] In one form, the front surface 1238 may not have a corresponding opposing surface (eg, rear surface) having substantially the same shape as the front surface 1238. The rear of the display unit housing 1205 may be at least partially open (eg, concave in the front direction) to receive the user's face.

[0282] 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.

[0283] In some forms, the display unit housing 1205 may surround a 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.

[0284] In some forms, 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 the user's ability to view images output by the display screen. Because the display screen cannot be removed from the display unit housing 1205, the user may not need to break the seal and access the display screen.

[0285] In some forms, the display screen is removably integrated into the head mounted display system 1000. The display screen may be a device that is usable 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.

[0286] In some forms, the display unit housing 1205 may include a compartment. A portion of a 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 external to the head mounted display unit 1200 (e.g., is a portable electronic device such as a cell phone). Additionally, removing the display screen from the display unit housing 1205 may help a user clean and / or replace the display screen.

[0287] Some forms of display housings 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 frictional engagement.

[0288] In some forms, the cover may selectively cover the compartment and provide additional protection and / or security for display screen 1220 when display screen 1220 is located within the compartment.

[0289] In some forms, the compartment may be open on the upper surface.When the display interface 1000 is worn by a user, the display screen may be inserted into the compartment in a substantially vertical orientation.

[0290] 5.2.1.3 Optical lenses

[0291] like Figure 4B As shown, at least one lens 1240 can be disposed 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 fatigue. The at least one lens 1240 can also help better observe the image displayed by the display screen 1220.

[0292] In some forms, lens 1240 is a Fresnel lens.

[0293] In some forms, lens 1240 may have a substantially frustoconical shape. In use, the wider end of lens 1240 may be positioned proximate to display screen 1220, while the narrower end of lens 1240 may be positioned proximate to the user's eyes.

[0294] In some forms, lens 1240 may have a substantially cylindrical shape and, in use, may have substantially the same width proximate display screen 1220 and proximate a user's eye.

[0295] In some forms, the at least one lens 1240 may also magnify an image on the display screen 1220 to assist a user in viewing the image.

[0296] In some forms, the head mounted display system 1000 includes two lenses 1240 (e.g., a binocular display), one lens for each eye of the user. In other words, each eye of the user can see through a separate lens located in front of the 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).

[0297] In some forms, the display screen 1220 can output two images simultaneously. Each eye of the user may only see one of the two images. The images can be displayed side by side on the display screen 1220. Each lens 1240 allows each eye to observe only the image closest to the corresponding eye. The user can observe the two images together as a single image.

[0298] In some forms, the rear perimeter of each lens 1240 can approximate the size of the user's eye socket. The rear 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 with the user's frontal bone in the superior direction (e.g., near the user's eyebrows), and can be aligned with the user's maxilla in the inferior direction (e.g., near the outer cheek area).

[0299] The positioning and / or size of lenses 1240 may allow a user to have approximately 360° peripheral vision in a virtual environment in order to closely simulate the physical environment.

[0300] In some forms, the head mounted display system 1000 includes a single lens 1240 (e.g., a monocular display). The lens 1240 may 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 may be positioned in front of only one eye (e.g., when images from the displacement screen 1220 are viewable by only one eye).

[0301] 5.2.1.3.1 Lens installation

[0302] The lens 1240 can be coupled to a spacer positioned near the display screen 1220 (eg, between the display screen 1220 and the interfacing structure 1100 ) such 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 ).

[0303] For example, lens 1240 can be recessed relative to interfacing structure 1100 such 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, an operating position).

[0304] In some forms, the front perimeter of each lens 1240 may surround approximately half of the display screen 1220. Along the centerline of the display screen 1220, there may be a relatively small gap between the two lenses 1240. This may allow a user viewing through both lenses 1240 to be able to view substantially the entire display screen 1220, with all images being output to the user.

[0305] 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 substantially the same image is output on each side of the display screen 1220), each image may be spaced apart on the display screen 1220. This may allow the two lenses 1240 to be positioned near the display screen 1220 while allowing the user to view the entire image displayed on the display screen 1220.

[0306] 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.

[0307] 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.

[0308] In some forms, protective layer 1242 may be opaque so that light from display screen 1220 cannot pass through. In addition, a user may not be able to view display screen 1220 without viewing through lens 1240.

[0309] In some forms, the protective layer 1242 can be non-planar and can include a contour that substantially matches the contour of the user's face. For example, in order to accommodate the user's nose, a portion of the protective layer 1242 can be recessed in the front direction.

[0310] In some embodiments, the user may not contact the protective layer 1242 when wearing the head mounted display system 1000. This can help reduce irritation caused by additional contact with the user's face (e.g., against the sensitive nasal ridge area).

[0311] 5.2.1.3.2 Corrective lenses

[0312] In some examples, an additional lens may be coupled to lens 1240 so that a user views an image output by display screen 1220 through lens 1240 and the additional lens.

[0313] 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.

[0314] In some forms, the additional lens may have a different magnification than lens 1240.

[0315] 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.

[0316] 5.2.2 Interface connection structure

[0317] like Figure 4A and 4B As shown, some forms of the present technology include an interface connection structure 1100 that is positioned and / or arranged to conform to the shape of a user's face and can provide increased comfort to the user when wearing and / or using the head-mounted display system 1000.

[0318] In some forms, the interfacing structure 1100 is coupled to a surface of the display unit housing 1205 .

[0319] In some forms, the interface connection 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 receive the user's face. Specifically, the user's eyes can be received in the viewing opening formed by the interface connection structure 1100.

[0320] In some forms, an interfacing structure 1100 in accordance with the present technology may include one or more portions constructed from a biocompatible material.

[0321] In some forms, an interfacing structure 1100 in accordance with the present technology may include one or more portions comprised of a soft, flexible and / or resilient material.

[0322] In some forms, an interfacing structure 1100 in accordance with the present technology may include one or more portions comprised of silicone rubber and / or foam.

[0323] In some forms, the interfacing structure 1100 may contact sensitive areas of the user's face, which may be uncomfortable locations. The material forming the interfacing structure 1100 may cushion these sensitive areas and limit discomfort to the user when wearing the head mounted display system 1000.

[0324] In some forms, these sensitive areas may include the user's forehead. Specifically, this may include areas of the user's head near the frontal bone, such as the parietal muscles and / or the glabella. This area may be sensitive because there is limited natural cushioning from muscle and / or fat between the user's skin and bone. Similarly, the ridges of the user's nose may also include little or no natural cushioning.

[0325] In some forms, the interfacing structure 1100 may comprise a single element. In some embodiments, the interfacing structure 1100 may be designed for mass manufacturing. For example, the interfacing structure 1100 may be designed to comfortably fit a wide range of different facial shapes and sizes.

[0326] In some forms, the interfacing structure 1100 may include different elements covering different areas of the user's face. Different portions of the interfacing structure 1100 may be constructed of different materials and provide different textures and / or cushioning to the user in different areas.

[0327] The user interface can be characterized in part based on the design intent that the interface connection structure will engage with the face in use. Some interface connection structures may be limited to engaging with areas of the user's face that protrude beyond the curved arc of the face engagement surface 1140 of the interface connection structure. These areas may typically include the user's forehead and cheekbones. This may cause user discomfort at localized pressure points. Other facial areas may not be engaged by the interface connection structure at all, or may be engaged only in a negligible manner, which may not be sufficient to increase the translation distance of the clamping pressure. These areas may typically include the sides of the user's face, or areas adjacent to and surrounding the user's nose. To the extent that there is a mismatch between the shape of the user's face and the interface connection structure, one or both may be adaptable to form an appropriate contact or other relationship.

[0328] In some embodiments of the present technology, the interfacing structure may include a seal forming or cushioning element 1130 (referred to herein as a "cushion") that, in use, covers one or more of the nasal ridge region, the frontal bone region, and a portion of each of the left and right infraorbital rim regions of the face. In some embodiments, the interfacing structure may be designed for mass manufacturing. For example, the interfacing structure may be designed to comfortably fit a wide range of different facial shapes and sizes.

[0329] Reference Figures 7 to 9 and FIG. 20A to FIG. 21CIn one form of the present technology, the head mounted display system 1000 further comprises an interface connection structure 1100 that provides a facial interface that is arranged to engage and be in a relative relationship with a user's face during use. In some forms, the interface connection structure 1100 may provide a cushioning function to improve the overall comfort of the user. In some forms, the facial interface may be arranged to at least partially block light from entering the display unit housing 1025 during use.

[0330] The positioning and stabilizing structure may be attached to the display unit housing 1025 whereby the interfacing structure 1100 of the present technology is held in an operable position on the face of a user. In some alternative forms (not shown), the positioning and stabilizing structure may be connected to a portion of the interfacing structure 1100 whereby the interfacing structure 1100 of the present technology is held in an operable position on the face of a user.

[0331] In some forms of the present technology (not shown), a system is provided in which the interface connection structure 1100 is integrally formed with the display unit housing 1025. In some forms of the present technology, for example Figures 7 to 16 and FIG. 20A to FIG. 23 In the illustrated embodiment, a system is provided in which the interface connection structure 1100 is formed as a separate removable component that is configured to be connected to and retained by the display unit housing 1025 so as to engage with and be in relative relationship with the user's face during use.

[0332] With particular reference Figures 8 to 13 and FIG. 20A to FIG. 23 , when the interface connection structure 1100 is formed as a removable component, multiple interface connection structure embodiments can be formed, each of which is configured to correspond to a different size and / or shape range. For example, the head-mounted display system 1000 may include a form of the interface connection structure 1100 suitable for a large head. This may not be suitable for users with smaller head sizes, and may therefore result in reduced comfort and performance. An interface connection structure 1100 suitable for a small head may not be suitable for a large head, and may also result in reduced comfort and performance for the user. Therefore, a removable interface connection structure 1100 can be advantageous because it enables a user to customize the head-mounted display system 1000 and select an interface connection structure 1100 that best suits their personal facial anthropometric features. In some further embodiments, the user can measure their facial features in order to custom design and form a suitable interface connection structure 1100. The removable interface connection structure 1100 also allows for applications such as medical uses, where the structure can be disposable or can allow for separate cleaning to comply with surgical procedures.

[0333] When the interface connection structure 1100 is formed as a removable component, it can be formed as a chassis 1110 including a rigid or semi-rigid material, which is configured to facilitate engagement with the display unit housing 1025. For example, in some embodiments, the chassis 1110 can be formed of a plastic material. The chassis 1110 can include one or more engagement elements 1120 around its periphery, which are configured to removably cooperate with corresponding elements configured on the display unit housing 1025. Suitable engagement elements 1120 can include one or more of clips, fasteners, magnets, or Velcro, as long as the number and position of engagement elements 1120 used in any given embodiment can ensure that the chassis 1110 and the display unit housing 1025 are fixed relative to each other without allowing significant sliding between them. For example, as in Figure 8 and 10 As best seen in FIG. 1 , the engagement element 1120 may include protruding gripping portions configured to engage complementary receiving portions on the display unit housing 1025. In an alternative example, as Fig. 20B and 21B As shown, the engagement element 1120 can receive a magnetic connector that is configured to engage a complementary magnetic connector on the display unit housing 1025 .

[0334] In some further embodiments, in addition to the clips formed on the upper portion of the chassis 1110 in use, a series of notches (not shown) can be formed on the lower portion of the chassis 1110 in use. As will be appreciated by those skilled in the art, other combinations of engagement elements 1120 are also considered to be within the functional scope of the present technology. In some further embodiments (not shown), the display unit housing 1025 may include a groove that is captively engaged with the outer periphery of the chassis 1110 to provide additional vertical support for the engagement element 1120 and further reduce the relative movement between the display unit housing 1025 and the interface connection structure 1100.

[0335] The chassis 1110 may be generally curved laterally across the user's face. In some embodiments, the curvature may generally correspond to the curvature of a single user's face. In some embodiments, the curvature of the chassis 1110 may be relatively small, wherein the cushion 1130 is formed to extend therefrom to bridge the distance to the user's face, and thus has a varying depth laterally across the user's face. In other words, the cushion 1130 may extend to a greater depth in an area adjacent to the side of the user's face. In some embodiments, the chassis 1110 may advantageously remain the same size and shape, while the remainder of the interface connection structure 1100 may vary, so as to provide multiple modular embodiments, or custom designed modular embodiments that are suitable for the user's individual facial anthropomorphic features.

[0336] Some or all of the face engaging surface 1140 of the cushion 1130 may have a (relatively) reduced friction area. In the case of silicone, this may be achieved by providing a so-called frosted surface. With the reduced friction area, the sealing surface may adhere to the user's face more than without the friction reduced area. For example, the reduced friction area may be provided to allow the sides of the user's nose to slide freely along the face engaging surface 1140. Likewise, a textile or foam material having a (relatively) reduced friction outer surface finish may be used to form part or all of the face engaging surface 1140.

[0337] The chassis 1110 may be formed in multiple parts, such as a first chassis portion 1112 that engages the display unit and a second chassis portion 1114 that engages a seal forming or cushioning element, such as Figure 8 , 9 , 14 to 16 and 20A to 21C. The first and second parts 1112, 1114 can be connected together by any suitable means, such as clamping, gluing or overmolding. In addition, the display unit joint portion 1112 and the cushion joint portion 1114 can be formed as a single piece. In another example, as Fig.23 As shown, the intermediate chassis portion 1115 can be joined to the first and second portions 1112 , 1114 .

[0338] 5.2.2.1 Sealing structure

[0339] like Figure 4D As shown, in one form of the present technology, the interfacing 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 sealing is likely to occur. The area where sealing actually occurs (the actual sealing surface) can vary over a given period of time, from day to day, and from user to user, depending on a number of factors, including but not limited to the location where the display unit housing 1205 is placed on the face, the tension in the positioning and stabilizing structure 1300, and / or the shape of the user's face.

[0340] In one form, the targeted seal-forming area is located on an exterior surface of the interfacing structure 1100 , such as the face engaging surface 1140 .

[0341] In some forms, the entire perimeter of the interface connection structure 1100 can be sealed against the user's skin and can block ambient light from reaching the eye area. The eye area can be formed on the area of ​​the parietal muscles, on the user's sphenoid bone, through the sphenoid bone to the outer cheek area between the left or right zygomatic arch, on the zygomatic arch, through the inner cheek area from the zygomatic arch toward the top of the nose, and on the user's nasal ridge, below the bridge of the nose point, to enclose a portion of the user's face therebetween.

[0342] When used as a seal-forming structure, the interface connection structure 1100 can contact sensitive areas of the user's face, such as the user's nasal ridge. This contact can completely prevent the entry 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 ridge does not significantly reduce the user's comfort when wearing the head-mounted display system 1000.

[0343] In some forms, the seal-forming structure may be formed on the area of ​​the parietal muscles, on the user's sphenoid bone, across the sphenoid bone to the outer cheek area between the left or right zygomatic arch, on the zygomatic arch, across the inner cheek area from the zygomatic arch toward the nose apex, and on the user's nasal ridge, below the bridge of the nose point, to enclose a portion of the user's face therebetween. The defined area may be the eye area.

[0344] In some forms, this may seal around the user's eyes.The seal formed by the seal-forming structure or interfacing structure 1100 may form a light seal so as to limit ambient light from reaching the user's eyes.

[0345] In one form, the seal-forming structure may include a gasket 1130 .

[0346] 5.2.2.1.1 Material biocompatibility

[0347] Biocompatible materials are considered to be materials that have been fully evaluated for their biological responses (related to their safety in use) in accordance with the ISO 10993-1 standard. This evaluation takes into account the nature and duration of contact with human tissues expected during use. In some forms of the present technology, materials used in the positioning and stabilizing structures and portions of the interfacing structure 1100 may undergo at least some of the following biocompatibility tests: Cytotoxicity-Elution Test (MeM Extraction): ANSI / AAMI / ISO10993-5; Skin Sensitization: ISO 10993-10; Irritation: ISO 10993-10; Genotoxicity-Bacterial Mutagenicity Test: ISO10993-3; Implantation: ISO 10993-6.

[0348] 5.2.2.2 Ventilated chassis

[0349] Next, refer to Figures 7 to 13 In one form of the technology, an interface connection structure 1100 includes a chassis 1110. In the example shown, the chassis 1110 includes a first chassis portion 1112 that engages the display unit 1200 and a second chassis portion 1114 that engages the pad 1130.

[0350] The first chassis portion 1112 includes a wall 1116. In an example, the wall 1116 defines a simple closed curve (or a substantially closed curve) around the perimeter of the viewing opening, such as Fig.11 and 13 shown.

[0351] The first chassis portion 1112 is provided with at least one vent hole 1400, each vent hole 1400 extending from a first opening 1410 in the inner side 1117 of the wall 1116 to a second opening 1420 in the outer side 1118 of the wall 1116 (see Fig.14 and 17 ).

[0352] like Figure 14-16 As best shown in Figures 1 and 17, in one form of the technology, the vent 1400 is substantially linear between the first and second openings 1410, 1420. In this manner, the vent 1400 is configured to allow light to pass through the vent 1400. This is in contrast to the convoluted or "zigzag" vents of the prior art, which are non-linear and / or otherwise configured to prevent light from passing through.

[0353] The chassis 1110 also includes at least one light shield 1430. The light shield 1430 is disposed on the inner side of the first chassis portion 1112 and is configured so that any light passing through the vents 1400 is blocked from entering the user's eyes. In an example, a group of two or more vents 1400 may be closely spaced together, and a single light shield 1430 may be provided to block light from any vent 1400 in the group from entering the user's eyes, such as in Fig.14 , 15 and 16 are best seen.

[0354] Each light shield 1430 may include a first light shield wall 1440 including a surface 1442 extending over a first opening 1410 of a single vent 1400 or a plurality of vents 1400. The surface 1442 may be spaced apart from the inner side 1117 of the chassis wall 1116 to allow air to freely communicate between the vent 1400 and the volume surrounded by the chassis 1110 (e.g., between the user's face and the head mounted display unit 1000 (e.g., viewing opening)). In one example (e.g., as Fig.16 ), the first light shielding wall 1440 can be directly connected to the chassis wall 1116 and can extend away from the chassis wall 1116 at a relatively shallow angle (e.g., about 15-25 degrees). Fig.15 ), the first shielding wall 1440 may be connected to the chassis wall 1116 via the connector wall 1450. In yet another example (e.g., as Fig.14 As shown), the first light shielding wall 1440 may have a first portion 1440a connected to the chassis wall 1116 (e.g., which extends substantially perpendicularly from the wall 1440) and a second portion 1440b spaced apart from the chassis wall 1116 and substantially parallel to the wall 1116.

[0355] In an example, the first light shielding wall 1440 may be curved to substantially match the local curvature of the chassis wall 1116, such as Fig.13 Best shown.

[0356] The following special reference Fig.13 In an example, the light shield 1430 further includes one or more side walls 1460 extending between the first light shield wall 1440 and the chassis wall 1116. Each light shield 1430 can be open to the interior volume at least in a direction facing the user's face (e.g., in a rear direction). However, the opening 1470 can be positioned, sized, and / or otherwise configured so that no light from the vent 1400 can enter the user's eyes.

[0357] In an example, the light shield 1430 can be integrally formed with the first chassis portion 1112 (eg, integrally formed with the first chassis portion 1112 ).

[0358] See next Fig.17 In one example, each vent 1400 has a width W and a height H, and the vent 1400 has a length L. The sizes of the first and second openings 1410, 1420 can be substantially the same, or they can be different. In an example, the cross-section of the vent 1400 remains substantially constant between the first and second openings 1410, 1420. For example, the vent 1400 can include a first pair of substantially parallel inner walls 1480 and a second pair of parallel walls 1490. In other examples, the vent can include at least one pair of converging or diverging opposing walls.

[0359] In examples, the length L of the vent 1400 is greater than at least one of the width W and the height H. In some examples, the vent 1400 extends substantially vertically through the wall 1116 (e.g., as shown in FIG. Fig.14 and 15 ), and the length of the vent 1400 is equal to the local thickness T of the wall 1116. In other examples, for example, Fig.16 As shown, the vents 1400 are disposed at a non-perpendicular angle relative to the outer surface 1118 of the wall 1116. In this case, the length L of each vent 1400 is greater than the local thickness of the wall 1116. In some examples, the first chassis portion may include one or more vertical vents 1400 and one or more non-perpendicular vents 1400.

[0360] In some forms of the technology, one or more vents 1400 are configured as substantially rectangular slots.

[0361] In an example, one or more vents 1400 are provided to an upper portion of the first chassis portion 1112, and one or more vents 1400 are provided to a lower portion of the first chassis portion 1112. In this way, airflow through the volume surrounded by the chassis 1110 is driven by convection, whereby air that has been heated to a temperature above ambient by the user's face (and possibly also by heat exhausted from the head mounted display unit) moves to the surrounding environment through the vents 1400 in the upper portion of the chassis 1110, and ambient temperature air is drawn into the volume through the vents 1400 in the lower portion of the chassis 1110. By providing substantially straight or linear vents 1400, resistance to flow through the vents 1400 is minimized. This may be important when the flow relies on convection, as the temperature difference between the interior of the volume and the environment may only be around 10-15°C. Such a low temperature difference may result in only relatively weak buoyancy to drive convective flow.

[0362] In one example, the first chassis portion 1112 includes six groups of vents 1400. Each of the left-hand and right-hand sides of the chassis portion includes a first group of vents 1500 disposed in an upper portion of the first chassis portion, e.g., substantially in line with the inner edges of the user's eyes, a second group of vents 1510 in a lateral upper portion of the chassis 1110, and a third group of vents 1520 in a lower portion of the chassis 1110, e.g., lateral lower portion (see, e.g., Figure 8-10 ).

[0363] In one form of the technology, each of the first set of vents 1500 has a cross-sectional area of ​​approximately 29 mm2 (across all vents in a set). The second set of vents 1510 has a cross-sectional area of ​​approximately 34 mm2, and the third set of vents 1520 has a cross-sectional area of ​​approximately 44 mm2.

[0364] In some forms of the technology, the cushion 1130 may also be configured to allow air to flow into the volume, for example, in the area between the cushion 1130 and the sides of the user's nose.

[0365] As described above, in examples, the first and second components 1112, 1114 of the chassis 1110 may be integrally formed. In other examples, in addition to providing these vents to the first chassis portion 1112, or as an alternative, the second chassis portion 1114 may be provided with one or more vents 1400.

[0366] Fig.18A simulated side view of airflow around a head mounted display system 1000 provided with vents 1400 in accordance with one form of the present technology is shown.

[0367] Fig.19 A simulated front view of airflow around a head mounted display system provided with vents 1500, 1510, 1520 according to one form of the present technology is shown. The figure shows that airflow through the area surrounded by the interface connection structure is promoted. Note that even if the airflow is not sufficient to cause a large drop in the temperature of the air in the area, removing air from the space and replacing it with ambient air helps control the humidity of the air in contact with the user's face, thereby improving the user's comfort.

[0368] Reference Figures 21A to 22G In the example of, wall 1116 extends between a posterior position and an anterior position, wherein the anterior position of the side of wall 1116 is located in front of the user's frontal bone during use.

[0369] See also Figures 21A to 21C , the first chassis portion 1112 is provided with at least one vent hole 1400. Fig. 22B and 22C , each vent 1400 extends from a first opening 1410 in the interior 1117 of the wall 1116 to a second opening 1420 in the exterior 1118 of the wall 1116. In these examples, the first chassis member 1112 includes four groups of vents 1400. Each of the left-hand and right-hand sides of the chassis portion includes an upper vent group 1500, such as between the upper portion and the side of the wall 1116, and a lower vent group 1502, such as between the lower portion and the side of the wall 1116.

[0370] Reference Figures 24A to 25B According to aspects of the present technology, the chassis 1110 includes a first chassis portion 1112 configured to engage the display unit and a second chassis portion 1114 configured to support the face engaging portion 1130. In an example, the first chassis portion 1112 has a greater rigidity than the second chassis portion 1114, for example, the second chassis portion 1114 may be at least partially made of an elastic material, while the first chassis portion 1112 may be made of a harder plastic material.

[0371] See also Fig.24A and 24B , at least one set of vent holes 1400 may be provided in the second chassis portion 1114, i.e. such that the vent holes 1400 are formed in the elastic material. Fig. 24B , the at least one light shield 1430 may also be made of an elastic material.

[0372] Reference Fig.25A and 25BIn an example, the first chassis portion 1112 includes a vent surrounding portion 1530, wherein the vent 1400 is disposed in the vent surrounding portion 1540. The vent surrounding portion 1530 is made of an elastic material having a lower stiffness than the surrounding material of the first chassis portion 1112. The vent surrounding portion also includes at least one light shield 1430. In an example, the vent surrounding portion 1530 and the second chassis portion 1114 may be joined by a bridging portion 1540 made of the same material.

[0373] 5.2.3 Positioning and stabilizing the structure

[0374] like Figure 4A and 4B As shown, the display screen 1220 and / or the 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.

[0375] In order to keep the display screen 1220 and / or the display unit housing 1205 in its correct operating position, the positioning and stabilizing structure 1300 is ideally comfortable relative to the user's head so as to accommodate the load caused by the weight of the display unit in a manner that minimizes facial marks and / or pain from long-term use. It is also necessary to achieve universal fit without compromising comfort, usability, and manufacturing costs. Design criteria may include adjustability over a predetermined range of low-touch simple setup solutions with low dexterity thresholds. Further considerations include catering to dynamic environments in which the head-mounted display system 1000 can be used. As part of the immersive experience of the virtual environment, the user can communicate, i.e., speak, while using the head-mounted display system 1000. In this way, the user's jaw or mandible can move relative to other bones of the skull. In addition, during the use of the head-mounted display system 1000, the entire head can move. For example, the movement of the user's upper body, in some cases the movement of the lower body, and in particular the movement of the head relative to the upper and lower body.

[0376] 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 .

[0377] In one form of the present technology, a positioning and stabilizing structure 1300 is provided that is configured in a manner consistent with being comfortably worn by a user. 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 band having a rectangular cross-section. In one example, the positioning and stabilizing structure 1300 includes at least one flat band.

[0378] 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 their head from side to side.

[0379] In one form of the present technology, the positioning and stabilizing structure 1300 comprises a belt comprised of a laminate of a textile user contacting layer, a foam inner layer, and a textile outer layer. In one form, the foam is porous to allow moisture (e.g., sweat) to pass through the belt. In one form, the skin contacting layer of the belt is formed of a material that helps wick moisture away from the user's face. In one form, the textile outer layer comprises a loop material for engaging with a hook material portion.

[0380] In some forms of the present technology, the positioning and stabilizing structure 1300 includes a strap that is extendable, such as elastically extendable. For example, the strap can be configured to be in tension during use and direct a force to pull the display screen 1220 and / or display unit housing 1205 toward a portion of the user's face, particularly near the user's eyes and in line with their field of vision. In one example, the strap can be configured as a tie strap.

[0381] 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 a lower edge of the first strap passes over a supra-auricular point of the user's head and covers a portion of the parietal bone without covering the occipital bone.

[0382] 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 below the sub-auricular point of the user's head and covers or is located below the occipital bone of the user's head.

[0383] 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.

[0384] In some forms of the present technology, the positioning and stabilizing structure 1300 comprises a strap that is flexible and, for example, non-rigid. An advantage of this aspect is that the strap rests more comfortably on the user's head.

[0385] In some forms of the present technology, the positioning and stabilising structure 1300 comprises a belt that is configured to be breathable to allow moisture vapor to be transmitted through the belt.

[0386] In some 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 retention forces to correspond 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 sized heads but not small sized heads, and another form that is suitable for small sized heads but not large sized heads.

[0387] In some forms, the positioning and stabilizing structure 1300 may include a cushioning material (eg, 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.

[0388] 5.2.3.1 Temporal connector

[0389] like Figure 4C As shown, some forms of the head mounted display system 1000 or positioning and stabilizing structure 1300 include temporal connectors 1250, each of which can cover a corresponding one of the user's temples in use. A portion of the temporal connector 1250 contacts an area of ​​the user's head near the supraauricular point (i.e., above each of the user's ears) in use. In some examples, the temporal connector is a band portion of the positioning and stabilizing structure 1300. In other examples, the temporal connector is an arm of the head mounted display unit 1200. In some examples, the temporal connector of the head mounted display system 1000 can be formed in part by a band portion (e.g., lateral band portion 1330) of the positioning and stabilizing structure 1300 and in part by an arm 1210 of the head mounted display unit 1200.

[0390] The temporal connectors 1250 may be lateral portions of the positioning and stabilising structure 1300, as each temporal connector 1250 is positioned on the left or right side of the user's head.

[0391] In some forms, the temporal connector 1250 can extend in the anterior-posterior direction and can be substantially parallel to the sagittal plane.

[0392] In some forms, the temporal connectors 1250 may be coupled to the display unit housing 1205. For example, the temporal connectors 1250 may be connected to the lateral sides of the display unit housing 1205. For example, each temporal connector 1250 may be coupled to a respective one of the lateral left surface 1234 and the lateral right surface 1236.

[0393] In some forms, the temple connectors 1250 may be pivotally connected to the display unit housing 1205 , and relative rotation may be provided between each temple connector 1250 and the display unit housing 1205 .

[0394] In some forms, the temple connector 1250 may be removably connected to the display unit housing 1205 (eg, via magnets, mechanical fasteners, hook and loop material, etc.).

[0395] In some forms, the temporal connector 1250 may be arranged to extend generally along or parallel to the Frankfurt horizontal plane of the head and above the zygomatic bone (eg, above the cheekbone of the user) in use.

[0396] In some forms, the temple connector 1250 may be positioned against the user's head similar to the arms of eyeglasses and positioned higher than the anti-helix of each respective ear.

[0397] In some forms, the temporal connectors 1250 can have a generally elongated and flat configuration. In other words, each temporal connector 1250 is much longer and wider (in the plane of the paper from top to bottom) than it is thick (into the plane of the paper).

[0398] In some forms, the temporal connectors 1250 may each have a three-dimensional shape having curvature in all three axes (X, Y, and Z). While the thickness of each temporal connector 1250 may be substantially uniform, its height varies throughout its length. The shape and size of each temporal 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).

[0399] In some forms, the temporal connector 1250 can be constructed of a rigid or semi-rigid material, which can include plastic, hytrel (thermoplastic polyester elastomer), or another similar material. The rigid or semi-rigid material can be self-supporting and / or able to maintain its shape without being worn. This can make it more intuitive or obvious for a 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 soft and does not retain its shape. Keeping the temporal connector 1250 in a use state before use can prevent or limit deformation while the user is wearing the positioning and stabilizing structure 1300, and allow the user to quickly install or wear the head-mounted display system 1000.

[0400] In some forms, the temporal connector 1250 may be a rigid member, which may allow tension to translate more efficiently (eg, directly) through the temporal connector 1250 because the rigid member limits the amount of elongation or deformation of the arm during use.

[0401] In some forms, the positioning and stabilizing structure 1300 may be designed so that the positioning and stabilizing structure 1300 "pops out of the box" and generally enters its in-use configuration. In addition, the positioning and stabilizing structure 1300 may be arranged to maintain its in-use shape once out of the box (e.g., because a plurality of rigid members may 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.

[0402] In some forms, a flexible and / or elastic material may be disposed around the rigid or semi-rigid material of the temporal connector 1250. The flexible material may fit more comfortably against the user's head, improve wear resistance, and provide soft contact with the user's face. In one form, the flexible material is a textile sleeve that is permanently or removably coupled to each temporal connector 1250.

[0403] In one form, the textile may be overmolded onto at least one side of the rigid member. In one form, the rigid member may be formed separately from the elastic component and then a layer of user contact material (e.g., Breath-O-Prene™) may be wrapped or slipped over the rigid member. In alternative forms, the user contact material may be provided to the rigid member by adhesive, ultrasonic welding, stitching, hook and loop material, and / or post connectors.

[0404] In some forms, the user contacting material may be on both sides of the rigid member, or alternatively may be only on the user contacting side of the rigid member (eg, the user contacting side) to reduce material bulk and cost.

[0405] In some forms, the temporal connector 1250 is comprised of a flexible material (eg, textile) that may sit comfortably against the user's skin and may not require added layers to increase comfort.

[0406] 5.2.3.2 Rear support part

[0407] like Figure 4C As shown, some versions of the positioning and stabilizing structure 1300 may include a rear support portion 1350 for helping to support the display screen 1220 and / or the display unit housing 1205 (eg, Figure 4B ). The rear support portion 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.

[0408] In some forms, rear support portion 1350 may be coupled to display unit housing 1205 via temple connector 1250 .

[0409] In some forms, the temple connector 1250 may be directly coupled to the display unit housing 1205 and the rear support portion 1350 .

[0410] In some forms, the rear support portion 1350 may have a three-dimensional contour curve to fit the shape of the user's head. For example, in use, the three-dimensional shape of the rear support portion 1350 may have a generally circular three-dimensional shape suitable for covering a portion of the parietal and occipital bones of the user's head.

[0411] In some forms, 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.

[0412] In some forms, the rear support portion 1350 is the lowermost portion of the positioning and stabilizing structure 1300. For example, the rear support portion 1350 can contact the area of ​​the user's head between the occipital bone and the trapezius muscle. The rear support portion 1350 can hook the lower edge of the occipital bone (e.g., the occipital portion). The rear support portion 1350 can provide a force directed in an upward direction and / or an anterior direction to maintain contact with the occipital portion of the user.

[0413] In some forms, the rear support portion 1350 is the lowest portion of the entire head mounted display system 1000. For example, the rear support portion 1350 can be positioned at the base of the user's neck (e.g., covering the occipital bone and the trapezius muscles below the user's eyes), such that the rear support portion 1350 is below the display screen 1220 and / or the display unit housing 1205.

[0414] In some forms, the rear support portion 1350 may include a cushioning material that may contact the user's head (e.g., covering the area between the occipital bone and the trapezius muscles). The cushioning material may provide additional comfort to the user and limit marks caused by the rear support portion 1350 pulling on the user's head.

[0415] 5.2.3.3 Forehead support

[0416] Some versions of the positioning and stabilising structure 1300 may include a forehead support or forehead support portion 1360 which is configured to contact the user's head above the user's eyes when in use. Figure 5B The positioning and stabilizing structure 1300 shown includes a forehead support 1360. In some embodiments, Figure 4AThe positioning and stabilizing structure 1300 shown in the figure may include a forehead support 1360. The forehead support 1360 can cover the frontal bone of the user's head. In some forms, the forehead support 1360 can also be located above the sphenoid bone and / or the temporal region. This can also position the forehead support 1360 to be higher than the user's eyebrows.

[0417] In some forms, the forehead support 1360 may be a front portion of the positioning and stabilising structure 1300 and may be disposed more anteriorly on the user's head than any other portion of the positioning and stabilising structure 1300. The rear support portion 1350 may provide a force directed at least partially in a rear direction.

[0418] In some forms, the forehead support 1360 may include a cushioning material (e.g., textile, foam, silicone, etc.) that may contact the user and may help limit marking caused by the straps of the positioning and stabilizing structure 1300. The forehead support 1360 and the interfacing structure 1100 may work together to provide comfort to the user.

[0419] 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).

[0420] 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 the user's face.

[0421] In some forms, the temporal connector 1250 may be coupled to the forehead support 1360 (eg, on a lateral side of the forehead support 1360 ). The temporal connector 1250 may extend at least partially in an inferior direction so as to couple to the posterior support portion 1350 .

[0422] In some forms, the positioning and stabilizing structure 1300 may include multiple pairs of temporal connectors 1250. For example, a pair of temporal connectors 1250 may be coupled to the forehead support 1360, and a pair of temporal connectors 1250 may be coupled to the display unit housing 1205.

[0423] In some forms, the forehead support 1360 can be presented at an angle generally parallel to the user's forehead to provide improved comfort to the user. For example, the forehead support 1360 can position the user in an orientation that covers 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 due to uneven presentation.

[0424] In some forms, the forehead support 1360 can be offset from the rear support or rear support portion that contacts the rear area of ​​the user's head (e.g., the area covering the occipital bone and the trapezius muscle). In other words, the axis along the rear band will not intersect with the forehead support 1360, and the forehead support 1360 can be set to be lower and more forward than the axis along the rear band. The offset generated between the forehead support 1360 and the rear band can generate a moment opposite to the gravity of the display screen 1220 and / or the display unit housing 1205. A larger offset will generate a larger moment, so it is more helpful to maintain the correct position of the display screen 1220 and / or the display unit housing 1205. The offset can be increased by moving the forehead support 1360 closer to the user's eyes (e.g., more forward and lower along the user's head), and / or increasing the angle of the rear band so that the rear band is more vertical.

[0425] 5.2.3.4 Adjustable straps

[0426] like Figure 4C As 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 .

[0427] 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 temporal connectors 1250 can be passed through the loop and folded back on itself. The length of the temporal connector 1250 that passes 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, passing a greater length of the temporal connector 1250 through the eyelet 1254 can provide greater tension.

[0428] In some forms, at least one of the temporal connectors 1250 may include an adjustment portion 1256 and a receiving portion 1258 (eg, Figure 4C 1254 on the display unit housing 1205 and can be coupled to the receiving portion 1258 (e.g., by folding back on itself). The adjusting portion 1256 can include a hook material and the receiving portion 1258 can include a loop material (or vice versa) so that the adjusting portion 1256 can be removably retained in a desired position. In some examples, the hook material and the loop material can be Velcro.

[0429] 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 relative to the user's head (e.g., when the light shield is used as a seal-forming structure).

[0430] In some forms, 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 passed through the eyelet 1254. For example, the adjustment portion 1256 can be constructed of an elastic textile that can provide elastic tension. The remainder of the temporal connector 1250 can be constructed of the rigid or semi-rigid materials described above (although it is contemplated that additional portions of the temporal connector 1250 can also be constructed of flexible materials).

[0431] 5.2.3.4.1 Top band

[0432] In some forms, the positioning and stabilizing structure 1300 may include a top strap portion that may cover an upper region of a user's head. Figure 1A The head mounted display system 1000 shown in FIG. 1 has a top strap portion.

[0433] In some forms, the top strap portion may extend between a front of the head mounted display system 1000 and a rear region of the head mounted display system 1000 .

[0434] 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.

[0435] In some forms, the top strap portion may be connected to the display unit housing 1205. For example, the top strap portion may be coupled to the upper surface 1230. The top strap portion may also be connected to the display unit housing 1205 near its rear end.

[0436] In some forms, the top strap portion can be coupled to the forehead support 1360. For example, the top strap portion can be coupled 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.

[0437] In some forms, the top strap portion may be connected to the rear support portion 1350. For example, the top strap portion may be connected to the rear support portion 1350 near its upper edge.

[0438] In some forms, the top strap portion may cover the frontal and parietal bones of the user's head.

[0439] In some forms, 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.

[0440] In some forms, the top strap portion may apply a tension that is oriented at least partially in an upward direction, which may oppose the force of gravity.

[0441] In some forms, the top strap portion can apply a tension that is at least partially oriented in a posterior direction which can pull the interfacing structure 1100 toward the user's face (and provide a portion of the sealing force when the light shield acts as a seal-forming structure).

[0442] In some forms, the top strap portion may be adjustable to apply selective tension on 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 .

[0443] In some forms, the display unit housing 1205 and / or the forehead support 1360 (as appropriate) may include at least one loop or eyelet 1254, and the top strap portion may be passed through the eyelet 1254 and folded back on itself. The length of the top strap portion passed through the eyelet 1254 may be selected by the user in order to adjust the tension provided by the positioning and stabilizing structure 1300. For example, passing a greater length of the top strap portion through the eyelet 1254 may provide greater tension.

[0444] In some forms, the top strap portion may include an adjustment portion and a receiving portion. The adjustment portion may be positioned through the eyelet 1254 and may be coupled to the receiving portion (e.g., by folding back on 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 may be removably retained in a desired position. In some examples, the hook material and the loop material may be Velcro.

[0445] 5.2.3.5 Rotation Control

[0446] In some forms, when the user wears the positioning and stabilizing structure, the display unit housing 1205 and / or the display screen 1220 can pivot relative to the user's face. This can allow the user to see the physical environment while still wearing the user interface 1000. This may be useful for users who want to interrupt viewing of the virtual environment, but do not want to disengage from the positioning and stabilizing structure 1300.

[0447] In some forms, the 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.

[0448] In some forms, the pivot connection 1260 can be coupled to the forehead support 1360. The display unit housing 1205 can be pivotable about a lower edge of the forehead support 1360.

[0449] In one form, the temple connector 1250 may be connected to the forehead support 1360 to allow the display unit housing 1205 to pivot.

[0450] 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 requiring additional user intervention.

[0451] 5.2.4 Controller

[0452] 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.

[0453] 5.2.4.1 Handheld controller

[0454] In some forms, controller 1270 may comprise a handheld device and may be easily grasped by a user with a single hand.

[0455] In some forms, the head mounted display system 1000 may include two handheld controllers. The handheld controllers may be substantially identical to each other, and each handheld controller may be actuated by a respective one of the user's hands.

[0456] In some forms, a user may interact with a handheld controller to control and / or interact with virtual objects in a virtual environment.

[0457] In some forms, the handheld controller includes a button that can be actuated by the user. For example, the user's finger may be able to press the button while grasping the handheld controller.

[0458] In some forms, the handheld controller may include directional controls (e.g., joystick, control pad, etc.) The user's thumb may be able to engage the directional controls while grasping the handheld controller.

[0459] In some forms, the controller 1270 may be wirelessly connected to the head mounted display unit 1200. For example, the controller 1270 and the head mounted display unit 1200 may be connected via Bluetooth, Wi-Fi, or any similar means.

[0460] In some forms, the controller 1270 and the head mounted display unit 1200 may be connected using a wired connection.

[0461] 5.2.4.2 Fixed controller

[0462] In some forms, at least a portion of the controller 1270 may be integrally formed on the display unit housing 1205 .

[0463] 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 that the control buttons may be engaged 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.

[0464] 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 is outputting images to the user.

[0465] In some forms, the control buttons and the head mounted display unit 1200 may be connected using a wired connection.

[0466] In some forms, head mounted display system 1000 may include both a handheld controller and control buttons.

[0467] 5.2.5 Speakers

[0468] refer to 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.

[0469] In some forms, speakers 1272 may be placed around the user's ears and may block or limit the user from hearing ambient noise.

[0470] In some forms, the speaker 1272 may be wirelessly connected to the head mounted display unit 1200. For example, the speaker 1272 and the head mounted display unit 1200 may be connected via Bluetooth, Wi-Fi, or any similar means.

[0471] In some forms, speaker 1272 includes a left ear transducer and a right ear transducer. In some forms, the left ear transducer and the right ear transducer can output different signals so that the volume and / or noise heard by the user in one ear (e.g., left ear) can be different from the volume and / or noise heard by the user in the other ear (e.g., right ear).

[0472] In some forms, controller 1270 may be used to control speaker 1272 (eg, the volume of speaker 1272 ).

[0473] 5.2.6 Power supply

[0474] refer to 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.

[0475] In some forms, power source 1274 may include a wired electrical connection that may be coupled to an external power source that may be secured to a particular location.

[0476] In some forms, power source 1274 may include a portable battery that can provide power to head mounted display unit 1200. A portable battery may allow a user greater mobility than a wired electrical connection.

[0477] 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.

[0478] In some forms, the head mounted display system 1000 may include a power source 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 source 1274 to the head mounted display unit 1200.

[0479] In some forms, 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 can be generally opposite the display unit housing 1205 and / or the head mounted display unit 1200. Thus, the weight of the power supply 1274 and the weight of the head mounted display unit 1200 and the display unit housing 1205 can be spread 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 longer periods of time.

[0480] In some forms, 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 by an electrical connector (e.g., a wire). The power supply 1274 can be stored in the user's pants pocket, on a belt clip, or in a similar manner that supports the weight of the power supply 1274. This eliminates the need to support weight on the user's head and can make the user more comfortable wearing the head mounted display system 1000.

[0481] 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 telephone or other similar electronic device that includes an internal power source 1274.

[0482] 5.2.7 Connection system

[0483] refer to Figure 6 , some forms 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.

[0484] In some forms, control system 1276 may include sensors that monitor various parameters (eg, in the physical environment) and transmit the measured parameters to the processor. The output received by the user may be affected by the measured parameters.

[0485] 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 the head mounted display unit 1200 but connected (e.g., electrically connected) to the head mounted display unit 1200.

[0486] 5.2.7.1 Power supply

[0487] 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.

[0488] 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 .

[0489] 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 .

[0490] 5.2.7.1.1 Integrated power supply support

[0491] In some forms, the battery support portion 1288 may support the low power system battery 1278 and / or the main battery 1280. The battery support portion 1288 may be supported directly on the head mounted display system 1000.

[0492] In some forms, the battery support portion 1288 may be disposed within the display unit housing 1205 .

[0493] In some forms, the battery support portion 1288 may be disposed on the positioning and stabilizing structure 1300. For example, the battery support portion 1288 may be coupled to the rear support portion 1350. The weight of the head mounted display system 1000 may be better balanced around the user's head. One form of the battery support portion 1288 is a battery pack housing, which will be described in more detail herein.

[0494] 5.2.7.1.2 Remote power supply support

[0495] In some forms, the battery support portion 1288 can support the low-power system battery 1278 and / or the main battery 1280. The battery support portion 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 portion 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 couple the battery support portion 1288 to the control system 1276 and / or other electronics. The positioning of the battery support portion 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.

[0496] 5.2.7.2 Orientation Sensor

[0497] In some forms, the control system 1276 includes an orientation sensor 1284 capable of sensing the orientation of the user's body. For example, the orientation sensor 1284 can sense when the user rotates their body as a whole, and / or rotates their head individually. In other words, the orientation sensor 1284 can measure the angular position of the user's body (or any similar parameter). By detecting the rotation, the sensor 1284 can communicate with the display screen 1220 to output a different image.

[0498] In some examples, external orientation sensors may be positioned in the physical environment where the user is wearing head mounted display system 1000. External position sensors may track the user's movements, similar to orientation sensors 1284 described above. Using external orientation sensors may reduce the weight that the user needs to support.

[0499] 5.2.7.2.1 Camera

[0500] In some forms, the control system 1276 may include at least one camera that may be positioned to observe the user's physical environment.

[0501] 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).

[0502] In some forms, orientation sensor 1284 comprises multiple cameras positioned throughout 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.

[0503] In some forms, camera 1284 is coupled to front surface 1238 of display unit housing 1205. Camera 1284 may be positioned so as to provide a "first person" perspective.

[0504] In some forms, the display screen 1220 may display the user's physical environment through the use of the camera 1284 so that the user may 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.

[0505] In one form, virtual objects may be displayed while display screen 1220 is displaying the user's physical environment. Camera 1284 may allow head mounted display system 1000 to operate as an MR device. Control system 1276 may include a controller for switching operation between a VR device and an MR device.

[0506] 5.2.7.3 Eye Sensor

[0507] In some forms, 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 of the user's eyes and determine which direction at least one of the user's eyes is looking at.

[0508] In some forms, the control system 1276 may include two eye sensors. Each sensor may correspond to one eye of the user.

[0509] In some forms, the eye sensor may be disposed in or near lens 1240 .

[0510] In some forms, the eye sensor may measure the angular position of the user's ears in order to determine visual output from display screen 1220.

[0511] 5.2.7.4 Processing system

[0512] In some forms, the control system 1276 includes a processing system that can receive measurements from various sensors of the control system 1276 .

[0513] In some forms, the processing system may receive measurements recorded by the orientation sensor 1284 and / or the eye sensor. Based on these measurements, the processor may communicate with the display screen 1220 to change 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 display a more upward portion of the virtual environment (e.g., in response to the direction from the processing system).

[0514] 5.3 Augmented Reality Display Interface

[0515] like Figure 5A and 5B As 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, a display unit housing 1205, and a positioning and stabilizing structure 1300. In some forms, the functional aspects may provide 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 arranged to be close to and in front of the user's eyes so as to allow the user to view the display screen 1220.

[0516] In other aspects, the head mounted display system 1000 may also include an interface connection structure 1100, a controller 1270, a speaker 1272, a power supply 1274, and / or a control system 1276. In some examples, these may be an integral piece 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 desired by the user.

[0517] 5.3.1 Display unit

[0518] 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 (eg, manually, by a positioning and stabilizing structure, etc.).

[0519] In some examples, the head-mounted display unit 1200 may include a display screen 1220, a display unit housing 1205, and / or an interface connection structure 1100. These components may be integrally formed in a single head-mounted display unit 1200, or they may be separable and selectively connected by a user to form the head-mounted display unit 1200. In addition, the display screen 1220, the display unit housing 1205, and / or the interface connection structure 1100 may be included in the head-mounted display system 1000, but may not be part of the head-mounted display unit 1200.

[0520] 5.3.1.1 Display

[0521] like Figure 5A As shown, some versions of head mounted display unit 1200 include display screen 1220. Display screen 1220 may include electronic components that provide observable output to a user.

[0522] exist Figure 5A and Figure 5B In one form of the technology shown, display screen 1220 provides an optical output observable by a user. The optical output allows the user to observe a virtual environment and / or virtual objects.

[0523] Display screen 1220 may be located proximate to the user's eyes to allow the user to view display screen 1220. For example, display screen 1220 may be positioned in front of the user's eyes. Display screen 1220 may display computer-generated images that may be viewed by the user to augment the user's physical environment (e.g., the computer-generated images may appear as if they exist in the user's physical environment).

[0524] In some forms, display screen 1220 is an electronic display. Display screen 1220 may be a liquid crystal display (LCD) or a light emitting diode (LED) screen.

[0525] In some forms, computer-generated images may be projected onto display screen 1220 .

[0526] In some forms, display screen 1220 may extend a wider distance between the user's pupils. Display screen 1220 may also be wider than the distance between the user's cheeks.

[0527] In some forms, display screen 1220 may display at least one image observable by a user. For example, display screen 1220 may display an image that changes based on a predetermined condition (eg, passage of time, movement of a user, input from a user, etc.).

[0528] In some forms, a portion of the display screen 1220 may be visible to only one eye of the user. In other words, a portion of the display screen 1220 may be positioned near and in front of one eye of the user (e.g., right eye) and blocked from being seen by the other eye (e.g., left eye).

[0529] In one example, the display screen 1220 may be divided into two sides (eg, a left side and a right side), and may display two images at a time (eg, one image on either side).

[0530] A similar image can be displayed on each side of display screen 1220. In some examples, the images can be the same, while in other examples, the images can be slightly different.

[0531] The two images on display screen 1220 may together form a binocular display, which may provide a more realistic AR or MR experience to the user. In other words, the user's brain may process the two images from display screen 1220 together as a single image. Providing two (e.g., non-identical) images may allow the user to view virtual objects in their periphery and expand their field of view in the virtual environment.

[0532] In some forms, the display screen 1220 can be positioned so that both eyes of the user can see it. The display screen 1220 can output a single image at a time, which can be seen by both eyes. This can simplify processing compared to the multi-image display screen 1220.

[0533] In some forms, the head mounted display system 1000 includes a single lens 1240 (e.g., a monocular display). The lens 1240 may 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 may be positioned in front of only one eye (e.g., when images from the displacement screen 1220 are viewable by only one eye). This may be particularly useful in AR or MR, where the user may want limited virtual stimulation and may wish to view the physical environment without overlaid virtual objects.

[0534] In some forms, particularly when display screen 1220 is used in an AR or MR environment, display screen 1220 can be turned off while the user continues to wear display screen 1220 and interact with the physical environment. This can allow the user to selectively choose when to receive virtual stimulation and when to only observe the physical environment.

[0535] In some forms, the display screen 1220 may be transparent (or translucent). For example, the display screen 1220 may be glass so that the user can see through the display screen 1220. This may be particularly beneficial in AR or MR applications so that the user can continue to see the physical environment.

[0536] 5.3.1.1.1 Optical lens

[0537] like Figure 5A As shown, display screen 1220 may be disposed within lens 1240. A user may view images provided by display screen 1220 through lens 1240. Lens 1240, along with display screen 1220, may be transparent and / or translucent such that a user may observe their physical environment while viewing through lens 1240. In some examples, a user may be able to observe (e.g., visually observe) their physical environment regardless of the presence or absence of a computer-generated image output by display screen 1220.

[0538] In some forms, the head mounted display system 1000 includes two lenses 1240, 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 the 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). For example, the lens 1240 can be a prescription lens 1240, and each eye of the user can have a different prescription.

[0539] In some forms, the display screen 1220 can output two images simultaneously. Each eye of the user may only see one of the two images. The images can be displayed side by side on the display screen 1220. Each lens 1240 allows each eye to observe only the image closest to the corresponding eye. The user can observe the two images together as a single image.

[0540] In some forms, each lens 1240 may include a separate display screen 1220 that outputs a different image. For example, a different computer-generated image may be displayed to the user's eyes.

[0541] In one form, the user can control whether the display screen 1220 outputs both, one, or neither simultaneously. This may be beneficial to the user if the user wishes to switch which eye is viewing the computer-generated image.

[0542] In some forms, the head mounted display system 1000 includes a single lens 1240 (e.g., a monocular display). The lens 1240 may 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 may be positioned in front of only one eye (e.g., when images from the displacement screen 1220 are viewable by only one eye).

[0543] 5.3.1.2 Display housing

[0544] In such Figure 5A and 5B In some forms of the technology shown, the display unit housing 1205 provides a support structure for the display screen 1220 to maintain the position of at least some components of the display screen 1220 relative to each other, and may additionally protect the display screen 1220 and / or other components of the head mounted display unit 1200. The display unit housing 1205 may be constructed of a material suitable for providing protection from impact forces to the display screen 1220. 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.

[0545] The display unit housing 1205 according to some forms of the present technology may be constructed from a hard, rigid or semi-rigid material (eg, plastic).

[0546] 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 a portion of the display unit housing 1205 that a user engages (e.g., grasps with their hand) includes a soft and / or flexible material.

[0547] Other forms of display unit housing 1205 according to the present technology may be formed of a soft, flexible, elastic material (eg, silicone rubber).

[0548] In some forms, the display screen 1220 may at least partially protrude from the display unit housing 1205. For example, unlike the VR head mounted display system 1000, the display screen 1220 in the AR (or MR) head mounted display system 1000 may not be completely surrounded by the display unit housing 1205. The user may be able to view the display screen 1220 directly, and may be able to view through the display screen 1220 (e.g., if the display screen 1220 is transparent or translucent).

[0549] In some forms, the display unit housing 1205 can support sensors or other electronic devices described below. The display unit housing 1205 can provide protection for the electronic devices without substantially obstructing the user's view of the display screen 1220.

[0550] 5.3.1.3 Interface connection structure

[0551] like Figure 5A and 5B As shown, some forms of the present technology include an interface connection structure 1100 that is positioned and / or arranged to conform to the shape of a user's face and can provide increased comfort to the user when wearing and / or using the head-mounted display system 1000.

[0552] In some forms, the interfacing structure 1100 is coupled to a surface of the display unit housing 1205 .

[0553] In some forms, an interfacing structure 1100 in accordance with the present technology may be constructed from biocompatible materials.

[0554] In some forms, an interfacing structure 1100 in accordance with the present technology may be constructed from a soft, flexible and / or elastic material.

[0555] In some forms, an interfacing structure 1100 in accordance with the present technology may be constructed from silicone rubber and / or foam.

[0556] In some forms, the interfacing structure 1100 may contact sensitive areas of the user's face, which may be uncomfortable locations. The material forming the interfacing structure 1100 may cushion these sensitive areas and limit discomfort to the user when wearing the head mounted display system 1000.

[0557] In some forms, these sensitive areas may include the user's forehead. Specifically, this may include areas of the user's head near the frontal bone, such as the parietal muscles and / or the glabella. This area may be sensitive because there is limited natural cushioning from muscle and / or fat between the user's skin and bone. Similarly, the ridges of the user's nose may also include little or no natural cushioning.

[0558] In some forms, the interfacing structure 1100 may comprise a single element. In some embodiments, the interfacing structure 1100 may be designed for mass manufacturing. For example, the interfacing structure 1100 may be designed to comfortably fit a wide range of different facial shapes and sizes.

[0559] In some forms, the interfacing structure 1100 may include different elements covering different areas of the user's face. Different portions of the interfacing structure 1100 may be constructed of different materials and provide different textures and / or cushioning to the user in different areas.

[0560] In some forms, the interface connection structure 1100 may include nose pads (e.g., nose pads used in eyeglasses) that may contact the lateral sides of the user's nose. The nose pads may apply light pressure to the user's nose to maintain the position of the head mounted display system 1000, but may not apply a force that causes significant discomfort (e.g., the nose pads may not receive rearwardly directed tension).

[0561] In some forms, the interfacing structure may include one or more vents as described above.

[0562] 5.3.2 Positioning and stabilizing the structure

[0563] like Figures 5A to 5B As shown, the display screen 1220 and / or the display unit housing 1205 of the head-mounted display system 1000 of the present technology can be held in a proper position by the positioning and stabilizing structure 1300 during use.

[0564] The positioning and stabilizing structure may be substantially the same as described above with reference to the virtual reality display system.

[0565] 5.3.2.1 Rotation Control

[0566] In some forms, the display unit housing 1205 and / or the display screen 1220 can pivot relative to the user's face when the user wears the positioning and stabilizing structure 1300. This can allow the user to see the physical environment without looking through the head mounted display unit 1200 (e.g., without looking at a computer generated image). This may be useful for a user who wants to interrupt viewing of a virtual environment, but does not want to disengage from the positioning and stabilizing structure 1300.

[0567] In some forms, pivot connection 1260 may be coupled to temporal connector 1250. Head mounted display unit 1200 may be capable of pivoting about an axis extending between temporal connectors 1250 (e.g., a substantially horizontal axis that may be substantially perpendicular to the Frankfurt horizontal direction in use).

[0568] In some forms, the display screen 1220 and / or display unit housing 1205 includes a pair of arms 1210 that extend away from the display screen 1220 (eg, in a cantilever configuration) and that can extend in a rearward direction during use.

[0569] In some forms, the pair of arms 1210 may extend at least partially along the temporal connector 1250 and may be connected to the temporal connector 1250 at a pivot connection 1260 .

[0570] 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 requiring additional user intervention.

[0571] In some forms, the display screen 1220 and / or the display unit housing 1205 may include a neutral position (see, e.g. Figure 5B ; substantially horizontal in use) and a pivot position (e.g., pivoted relative to a horizontal axis in use).

[0572] In some forms, the display screen 1220 and / or the display unit housing 1205 can pivot between about 0° and about 90° relative to the temporal connector 1250. In some forms, the display screen 1220 and / or the display unit housing 1205 can pivot between about 0° and about 80° relative to the temporal connector 1250. In some forms, the display screen 1220 and / or the display unit housing 1205 can pivot between about 0° and about 70° relative to the temporal connector 1250. In some forms, the display screen 1220 and / or the display unit housing 1205 can pivot between about 0° and about 60° relative to the temporal connector 1250. In some forms, the display screen 1220 and / or the display unit housing 1205 can pivot between about 0° and about 50° relative to the temporal connector 1250. In some forms, the display screen 1220 and / or the display unit housing 1205 can pivot between about 0° and about 45° relative to the temple connector 1250. At least in its most pivoted position, the display screen 1220 can be superior to the user's eyes, so that the user does not have to look through the display screen 1220 to view the physical environment.

[0573] 5.3.3 Controller

[0574] 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.

[0575] 5.3.3.1 Handheld controller

[0576] In some forms, controller 1270 may comprise a handheld device and may be easily grasped by a user with a single hand.

[0577] In some forms, the head mounted display system 1000 may include two handheld controllers. The handheld controllers may be substantially identical to each other, and each handheld controller may be actuated by a respective one of the user's hands.

[0578] In some forms, a user may interact with a handheld controller to control and / or interact with virtual objects in a virtual environment.

[0579] In some forms, the handheld controller includes a button that can be actuated by the user. For example, the user's finger may be able to press the button while grasping the handheld controller.

[0580] In some forms, the handheld controller may include directional controls (e.g., joystick, control pad, etc.) The user's thumb may be able to engage the directional controls while grasping the handheld controller.

[0581] In some forms, controller 1270 may be wirelessly connected to head mounted display unit 1200. For example, connector 1270 and head mounted display unit 1200 may be connected via Bluetooth, Wi-Fi, or any similar means.

[0582] In some forms, the controller 1270 and the head mounted display unit 1200 may be connected using a wired connection.

[0583] 5.3.3.2 Fixed controller

[0584] In some forms, at least a portion of the controller 1270 may be integrally formed on the display unit housing 1205 .

[0585] 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 that the control buttons may be engaged 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.

[0586] 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 is outputting images to the user.

[0587] In some forms, the control buttons and the head mounted display unit 1200 may be connected using a wired connection.

[0588] In some forms, head mounted display system 1000 may include both a handheld controller and control buttons.

[0589] In some forms, it is preferred to have only one or more control buttons in the AR or MR device. While wearing the AR or MR head mounted display system 1000, the user may interact with their physical environment (e.g., walking around, using tools, etc.). Therefore, the user may prefer to keep their hands free of the position of the controller 1270.

[0590] 5.3.4 Speakers

[0591] like Figure 6 As shown, some forms of the head mounted display system 1000 include 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.

[0592] In some forms, speakers 1272 may be positioned about the user's ears and may block or limit the user from hearing ambient noise.

[0593] In some forms, the speaker 1272 may be wirelessly connected to the head mounted display unit 1200. For example, the speaker 1272 and the head mounted display unit 1200 may be connected via Bluetooth, Wi-Fi, or any similar means.

[0594] In some forms, speaker 1272 includes a left ear transducer and a right ear transducer. In some forms, the left ear transducer and the right ear transducer can output different signals so that the volume and / or noise heard by the user in one ear (e.g., left ear) can be different from the volume and / or noise heard by the user in the other ear (e.g., right ear).

[0595] In some forms, controller 1270 may be used to control speaker 1272 (eg, the volume of speaker 1272 ).

[0596] 5.3.5 Power supply

[0597] like Figure 6 As shown, 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.

[0598] The power supply may be substantially the same as that described above with reference to the virtual reality display system.

[0599] 5.3.6 Control system

[0600] In some forms, the control system 1276 may be powered by a power source 1274 (eg, 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.

[0601] 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 .

[0602] 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 .

[0603] 5.3.6.1.1 Integrated power supply support

[0604] In some forms, the battery support portion 1288 may support the low power system battery 1278 and / or the main battery 1280. The battery support portion 1288 may be supported directly on the head mounted display system 1000.

[0605] In some forms, the battery support portion 1288 may be disposed within the display unit housing 1205 .

[0606] In some forms, the battery support portion 1288 may be disposed on the positioning and stabilizing structure 1300. For example, the battery support portion 1288 may be coupled to the rear support portion 1350. The weight of the head mounted display system 1000 may be better balanced around the user's head.

[0607] 5.3.6.1.2 Remote power supply support

[0608] In some forms, the battery support portion 1288 can support the low-power system battery 1278 and / or the main battery 1280. The battery support portion 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 portion 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 couple the battery support portion 1288 to the control system 1276 and / or other electronics. The positioning of the battery support portion 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.

[0609] 5.3.6.2 Orientation Sensor

[0610] In some forms, the control system 1276 includes an orientation sensor 1284 capable of sensing the orientation of the user's body. For example, the orientation sensor 1284 can sense when the user rotates their body as a whole, and / or rotates their head individually. In other words, the orientation sensor 1284 can measure the angular position of the user's body (or any similar parameter). By detecting the rotation, the sensor 1284 can communicate with the display screen 1220 to output a different image.

[0611] In some examples, external orientation sensors may be positioned in the physical environment where the user is wearing head mounted display system 1000. External position sensors may track the user's movements, similar to orientation sensors 1284 described above. Using external orientation sensors may reduce the weight that the user needs to support.

[0612] 5.3.6.2.1 Camera

[0613] In some forms, the control system 1276 may include at least one camera that may be positioned to observe the user's physical environment.

[0614] In some forms, orientation sensor 1284 is a camera that can be configured to observe the user's physical environment in order to measure and determine the orientation of the user's head (eg, the direction in which the user's head has been tilted).

[0615] In some forms, orientation sensor 1284 comprises multiple cameras positioned throughout 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.

[0616] 5.3.6.3 Eye Sensor

[0617] In some forms, 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 of the user's eyes and determine which direction at least one of the user's eyes is looking at.

[0618] In some forms, the control system 1276 may include two eye sensors. Each sensor may correspond to one eye of the user.

[0619] In some forms, the eye sensor may be disposed in or near lens 1240 .

[0620] In some forms, the eye sensor may measure the angular position of the user's ears in order to determine visual output from display screen 1220.

[0621] In some forms, the user's eyes can act as controllers, and the user can move their eyes to interact with virtual objects. For example, a virtual cursor can follow the position of the user's eyes. The eye sensor can track and measure the movement of the user's eyes and communicate with the processing system 1286 (described below) to move the virtual cursor.

[0622] 5.3.6.4 Processing system

[0623] In some forms, the control system 1276 includes a processing system 1286 (eg, a microprocessor) that may receive measurements from various sensors of the control system 1276 .

[0624] In some forms, the processing system 1286 may receive measurements recorded by the orientation sensor 1284 and / or the eye sensor. Based on these measurements, the processor may communicate with the display screen 1220 to change 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 display a more upward portion of the virtual environment (e.g., in response to the direction from the processing system 1286).

[0625] 5.4 Cleaning

[0626] In some forms, the head mounted display system 1000, or at least a portion thereof, is designed to be used by a single user and to be cleaned in the user's home, e.g., by washing in soapy water, without the need for specialized equipment for disinfection and sterilization. Specifically, the positioning and stabilizing structure 1300 and the interfacing structure 1100 are designed to be cleaned because they both come into direct contact with the user's head.

[0627] In some other forms, components of the positioning and stabilizing structure 1300 and the interfacing structure 1100 are used in laboratories, clinics, and hospitals, where a single head mounted display may be reused on multiple people or used during medical procedures. In each laboratory, clinic, and hospital, the head mounted display or its associated components may be reprocessed and exposed to processes such as thermal disinfection, chemical disinfection, and sterilization. Therefore, the design of the positioning and stabilizing structure and the interfacing structure may need to be validated according to ISO 17664 in order to disinfect and sterilize the mask.

[0628] Materials can be selected that can withstand reprocessing. For example, strong materials can be used in the positioning and stabilizing structure 1300 to withstand exposure to high levels of disinfecting solutions and agitation with brushes. In addition, some components of the positioning and stabilizing structure are detachable and can be disconnected during use to improve the efficiency of reprocessing.

[0629] In some examples, the interface connection structure 1100 may come into contact with the user's head during use and may therefore become dirty (e.g., due to sweat). The interface connection structure 1100 may be designed to be detached from the display unit housing 1205 to provide the ability to remove it for cleaning and / or replacement. It may be desirable to clean the interface connection structure 1100 without getting the positioning and stabilizing structure 1300 wet. Alternatively or additionally, the positioning and stabilizing structure 1300 may become dirty due to contact with the user's head and may be removed independently of the interface connection structure 1100 for cleaning and / or replacement. In either case, this may be facilitated by allowing the components to be disconnected for such purpose.

[0630] In some examples, a cover (e.g., constructed of textile, silicone, etc.) can be removably positioned over the interfacing structure and can be removed for cleaning and / or replacement after each use. The cover can allow the interfacing structure 3400 to remain secured to the display unit housing 1205 and still provide a surface that can be easily cleaned after use.

[0631] 5.5 External Computer

[0632] In some forms, the head mounted display system 1000 (eg, VR, AR, and / or MR) may be used in conjunction with a separate device such as a computer or video game console. For example, the display interface may be electrically connected to the separate device.

[0633] In some forms, at least some of the processing for the head mounted display system 1000 may be performed by a separate device. The separate device may include a larger and / or more powerful processor than the user can comfortably support (e.g., the processor of the separate device may be too heavy for the user to comfortably support on their head).

[0634] 6 Glossary

[0635] For purposes of this technical disclosure, one or more of the following definitions may apply in certain forms of the technology. In other forms of the technology, alternative definitions may apply.

[0636] 6.1 Overview

[0637] Environment: In certain forms of the present technology, the term "environment" will be taken to refer to (i) external to the display interface and / or user, and (ii) directly surrounding the display interface and / or user.

[0638] For example, ambient light with respect to a display interface may be light directly surrounding the user, such as light in the same and / or adjacent rooms as the user, and / or natural light from the sun.

[0639] In some forms, ambient (e.g., acoustic) noise may be considered to be the background noise level in a room that the user is in, in addition to noise generated, for example, by the display device or emitted from speakers connected to the display device. Ambient noise may be generated by sound sources outside the room.

[0640] Leakage: The word leakage will be considered as accidental exposure to light. In one example, leakage may occur as a result of an incomplete seal between the display unit and the user's face.

[0641] Noise, radiated (acoustic): Radiated noise in this document is the noise that reaches the user through the ambient air. In one form, radiated noise can be quantified by measuring the sound power / pressure level of the object in question according to ISO 3744.

[0642] User: A person who operates the display interface and / or views the images provided by the display interface. For example, the person may put on, wear and / or take off the display interface.

[0643] 6.1.1 Materials

[0644] Silicone or Silicone Elastomer: Synthetic rubber. In this specification, references to silicone refer to liquid silicone rubber (LSR) or compression molded silicone rubber (CMSR). One form of commercially available LSR is SILASTIC (included in the range of products sold under this trademark), which is manufactured by Dow Corning. Another manufacturer of LSR is Wacker. Unless otherwise specified to the contrary, exemplary forms of LSR have a Shore A (or Type A) indentation hardness in the range of about 35 to about 45 as measured using ASTM D2240.

[0645] Polycarbonate: It is a thermoplastic polymer of bisphenol A carbonate.

[0646] 6.1.2 Mechanical properties

[0647] Resilience: The ability of a material to absorb energy when elastically deformed and release that energy when unloaded.

[0648] Elastic: Will release substantially all of its energy when unloaded. Includes, for example, certain silicones and thermoplastic elastomers.

[0649] Hardness: The ability of a material to resist deformation (e.g. as described by Young's modulus or the indentation hardness scale measured on a standardized sample size).

[0650] • "Soft" materials may include silicone or thermoplastic elastomers (TPEs) and may deform easily, for example under finger pressure.

[0651] • "Hard" materials may include polycarbonate, polypropylene, steel or aluminum, and may not deform easily, for example under finger pressure.

[0652] Stiffness (or rigidity) of a structure or component: The ability of a structure or component to resist deformation in response to an applied load. The load can be a force or moment, such as compression, tension, bending, or torsion. The structure or component may offer different resistance in different directions. The inverse of stiffness is flexibility.

[0653] Closed Cell Foam: Foam containing completely enclosed cells (i.e., closed cells).

[0654] Elastane: A polymer made from polyurethane.

[0655] Elastomer: A polymer that exhibits elastic properties. For example, silicone elastomer.

[0656] Ethylene Vinyl Acetate (EVA): A copolymer of ethylene and vinyl acetate.

[0657] Fiber: A filament (single or multiple), strand, yarn, thread, or cord, the length of which is significantly greater than its width. Fibers may include animal-based materials such as wool or silk, plant-based materials such as linen and cotton, and synthetic materials such as polyester and rayon. Fiber may specifically refer to a material that may be interwoven and / or interlaced (e.g., in a web) with other fibers of the same or different material.

[0658] Foam: Any material, such as polyurethane, that has air bubbles introduced during the manufacturing process to create a lightweight cellular form.

[0659] Neoprene: A synthetic rubber made by the polymerization of chloroprene. Neoprene is used in commercial products: Breath-O-Prene.

[0660] Nylon: A synthetic polyamide that is elastic and can be used, for example, to form fibers / filaments for use in textiles.

[0661] Open Cell Foam: Foam containing pores, i.e. air bubbles that are not completely enclosed, i.e. open cells.

[0662] Polycarbonate: A typical transparent thermoplastic polymer of bisphenol-A carbonate.

[0663] Polyethylene: A thermoplastic that is resistant to chemicals and moisture.

[0664] Polyurethane (PU): A plastic material prepared by copolymerizing isocyanates and polyols, which can take the form of foams (polyurethane foams) and rubbers (polyurethane rubbers), for example.

[0665] Semi-open foam: Foam containing a combination of closed and open (enclosed) cells.

[0666] Textile: A material comprising at least one natural or man-made fiber. In this specification, a textile may refer to any material formed as a network of interwoven and / or interlaced fibers. One type of textile may include a fabric that is constructed by interlacing fibers using a specific technique. These include weaving, knitting, crocheting, knotting, weaving, tufting, or braiding. Cloth may be used synonymously with fabric, although it may specifically refer to a treated piece of fabric. Other types of textiles may be constructed using bonding (chemical, mechanical, thermal, etc.), felting, or other nonwoven processes. A textile produced by one of these methods is fabric-like and may be considered synonymous with fabric for the purposes of this application.

[0667] Thermoplastic Elastomer (TPE): A generally low modulus, flexible material that can be stretched at room temperature and has the ability to recover to approximately its original length when the stress is released. Commercial products using TPE include: Hytrel, Dynaflex, Medalist

[0668] Thermoplastic Polyurethane (TPU): A thermoplastic elastomer with high durability and flexibility.

[0669] 6.2 Mechanical properties

[0670] Resilience: The ability of a material to absorb energy when elastically deformed and release that energy when unloaded.

[0671] Elastic: Will release substantially all of its energy when unloaded. Includes, for example, certain silicones and thermoplastic elastomers.

[0672] Hardness: The ability of a material to resist deformation (e.g. as described by Young's modulus or the indentation hardness scale measured on a standardized sample size).

[0673] • "Soft" materials may include silicone or thermoplastic elastomers (TPEs) and may deform easily, for example under finger pressure.

[0674] • "Hard" materials may include polycarbonate, polypropylene, steel or aluminum, and may not deform easily, for example under finger pressure.

[0675] Stiffness (or rigidity) of a structure or component: The ability of a structure or component to resist deformation in response to an applied load. The load can be a force or a moment, such as compression, tension, bending, or torsion. The structure or component may offer different resistance in different directions.

[0676] Flexible structure or component: A structure or component that will change shape (eg, bend) when made to support its own weight for a relatively short period of time, such as within 1 second.

[0677] Rigid structure or component: A structure or component that does not substantially change shape when subjected to loads normally encountered in use.

[0678] 6.3 Other comments

[0679] 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 file or records, but otherwise reserves all copyright rights whatsoever.

[0680] Unless the context clearly indicates and provides a numerical range, it should be understood that each intervening value between the upper and lower limits of the range, to one-tenth of the unit of the lower limit, and any other stated or intervening value in the stated range are broadly included in the present technology. The upper and lower limits of these intermediate ranges (which may independently be included in the intermediate ranges) are also included in the present technology, subject to any specifically excluded limits in the stated ranges. In the case where the stated range includes one or two limits, ranges excluding either or both of those included limits are also included in the present technology.

[0681] Furthermore, where one or more values ​​are stated herein as being implemented as part of the technology, it should be understood that such values ​​may be approximate unless otherwise stated, and that such values ​​may be used with any suitable significant figures to the extent that practical technical implementation may allow or require it.

[0682] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the technology belongs. Although any methods and materials similar or equivalent to those described herein can also be used in the practice or testing of the technology, a limited number of exemplary methods and materials are described herein.

[0683] When a particular material is provided for use in constructing a component, obvious alternative materials having similar properties may be used as substitutes.In addition, unless specified to the contrary, any and all components described herein should be understood to be capable of being manufactured, and thus may be manufactured together or separately.

[0684] It must be noted that as used herein and in the appended claims, the singular forms "a," "an," and "the" include their plural equivalents unless the context clearly dictates otherwise.

[0685] All publications mentioned herein are incorporated herein by reference in their entirety to disclose and describe methods and / or materials as the subject matter of those publications. Publications discussed herein are provided solely for their disclosures prior to the filing date of the present application. This article should not be construed as admitting that the present technology is not entitled to be earlier than such disclosures due to prior inventions. In addition, the publication date provided may be different from the actual publication date, which may require independent confirmation.

[0686] The terms “comprises” and “comprising” should be understood to refer to elements, components or steps in a non-exclusive manner, indicating that the marked elements, components or steps may be present or utilized, or in combination with other elements, components or steps that are not marked.

[0687] The subject headings used in the detailed description are included only for the convenience of the reader and should not be used to limit the subject matter found in the entire disclosure or claims. The subject headings should not be used to interpret the scope of the claims or claim limitations.

[0688] Although the technology herein has been described with reference to specific examples, it should be understood that these examples only illustrate the principles and applications of the technology. In some cases, the terms and symbols may imply specific details that are not required for practicing the technology. For example, although the terms "first" and "second" may be used, unless otherwise specified, they are not intended to represent any order, but can be used to distinguish different elements. In addition, although the process steps in the method can be described or shown in sequence, such order is not required. Those skilled in the art will recognize that such an order can be modified and / or aspects thereof can be performed simultaneously or even synchronously.

[0689] It is therefore to be understood that numerous modifications may be made to the illustrative examples and that other arrangements may be devised without departing from the spirit and scope of the present technology.

[0690] 6.4 List of selected reference symbols

[0691] user 100 Head mounted display system 1000 Interface connection structure 1100 Base 1110 First chassis part 1112 Second chassis part 1114 Intermediate chassis components 1115 wall 1116 Inside 1117 Outside 1118 Joining elements 1120 liner 1130 Face joint surface 1140 Head mounted display unit 1200 Display unit housing 1205 arm 1210 Display 1220 Upper surface 1230 Lower surface 1232 Left side surface 1234 Side right surface 1236 Front surface 1238 Optical lens 1240 Protective layer 1242 Temporal connector 1250 Ring or eyelet 1254 Adjustment section 1256 Receiving part 1258 Pivot connection 1260 Controller 1270 speaker 1272 power supply 1274 Control System 1276 Low power battery 1278 Main battery 1280 Real-time clock 1282 Orientation sensor 1284 Battery support part 1288 Positioning and stabilizing structures 1300 Lateral belt part 1330 Rear support part 1350 Forehead / front support section 1360 Ventilation holes 1400 First opening 1410 Second opening 1420 Light Shielding 1430 First light shielding wall 1440 Part I 1440a Part 2 1440b surface 1442 Connector wall 1450 Sidewall 1460 Opening 1470 The first pair of parallel walls 1480 The second pair of parallel walls 1490 Upper vent group 1500 Lower vent group 1502 Side vent set 1510 Rear vent 1520 Ventilation holes around 1530 Bridge section 1540

Claims

1. An interface connection structure for a head mounted display unit, the interface connection structure being constructed and arranged to be in opposing relationship with a user's face, the interface connection structure comprising a chassis, the chassis comprising a wall and at least one vent extending through the wall, the vent having a first opening on an inner surface of the wall and a second opening on an outer surface of the wall, wherein the vent is substantially linear between the first opening and the second opening, and The base frame includes at least one light shielding portion, and the at least one light shielding portion is configured to block light from the vent from entering the user's eyes.

2. An interface connection structure for a head mounted display unit, the interface connection structure being constructed and arranged to be in opposing relationship with a user's face, the interface connection structure comprising a chassis, the chassis comprising a wall and at least one vent extending through the wall, the vent having a first opening on an inner surface of the wall and a second opening on an outer surface of the wall, wherein the vent is configured to allow passage of light from the second opening to the first opening, and The base frame includes at least one light shielding portion, and the at least one light shielding portion is configured to block light from the vent from entering the user's eyes.

3. An interface connection structure according to claim 1 or 2, wherein the light shielding portion includes a surface extending substantially parallel to the inner surface of the wall, wherein the surface is positioned so that any light passing through the vent impinges on the surface.

4. The interface connection structure according to any one of claims 1 to 3, wherein the light shielding portion is open toward a rear side of the chassis.

5. The interface connection structure of any one of claims 1 to 4, wherein the vent has a length, a width, and a height, wherein the length is greater than at least one of the width and the height.

6. An interfacing structure according to any one of claims 1 to 5, wherein the vent is configured as a slot.

7. An interfacing structure according to any one of claims 1 to 6, wherein the vent has a constant cross-section between the first opening and the second opening.

8. An interfacing structure according to any one of claims 1 to 7, wherein a centreline of the vent is substantially perpendicular to an outer surface of a portion of the interfacing structure surrounding the vent.

9. An interfacing structure according to any one of claims 1 to 7, wherein a centreline of the vent extends at an angle to an axis perpendicular to an outer surface of a portion of the interfacing structure surrounding the vent.

10. An interfacing structure as claimed in any one of claims 1 to 9 wherein the interfacing structure comprises a face engaging portion.

11. An interface connection structure according to claim 10, wherein the facial engaging portion is configured to provide an air path between the outside of the base and the inside of the base during use, wherein the air path is arranged between the facial engaging portion and the surface of the user's nose.

12. An interface connection structure according to any one of claims 1 to 11, wherein the chassis comprises a plurality of said vent holes.

13. The interfacing structure of claim 12, wherein a single light shielding portion is configured to block light from a plurality of vents.

14. An interface connection structure according to claim 12 or 13, wherein the plurality of ventilation holes include a plurality of ventilation hole groups, the plurality of ventilation hole groups include a first ventilation hole group and a second ventilation hole group, the first ventilation hole group is arranged at the upper part of the wall, and the second ventilation hole group is arranged at the lower part of the wall.

15. An interface connection structure according to any one of claims 1 to 14, wherein the wall of the chassis extends between a rear position and a front position, wherein the front position of the side of the wall is located in front of the user's frontal bone during use.

16. An interface connection structure according to any one of claims 1 to 15, wherein the base frame includes a first base frame portion and a second base frame portion, the first base frame portion is configured to engage the display unit, and the second base frame portion is configured to support a facial engagement portion of the interface connection structure.

17. The interface connection structure of claim 16, wherein the first chassis portion has a greater stiffness than the second chassis portion.

18. An interface connection structure according to claim 17, wherein the second chassis portion is at least partially made of a resilient material.

19. An interfacing structure as claimed in any one of claims 16 to 18, wherein the at least one vent is provided in the second chassis portion.

20. An interfacing structure according to any one of claims 16 to 19, wherein the at least one light shield is made of a resilient material.

21. An interfacing structure as claimed in claim 16 or 17, wherein the at least one vent is provided in the first chassis portion.

22. The interface connection structure of claim 21, wherein the first chassis portion includes a base chassis portion and a vent surrounding portion, wherein at least one vent is disposed in the vent surrounding portion.

23. The interface connection structure of claim 22, wherein the base chassis portion is made of a first material and the vent surrounding portion is made of a second material, the second material having a lower stiffness than the first material.

24. An interfacing structure as claimed in claim 23, wherein the vent surround portion is made of the same material as the second chassis portion.

25. The interface connection structure of claim 23, wherein the chassis includes a bridging portion between the vent surround portion and the second chassis portion, wherein the bridging portion is made of the same material as the vent surround portion and the second chassis portion.

26. A head mounted display system comprising: Head mounted display unit; as well as a positioning and stabilizing structure constructed and arranged to hold the head mounted display unit in an operating position above a user's face in use, The head mounted display unit comprises: Display unit housing; as well as an interface connection structure constructed and arranged to be in opposing relationship with the user's face, the interface connection structure comprising a face engaging portion configured to engage the user's face in use, The interface connection structure includes a chassis, the chassis and the display unit housing at least partially defining an internal volume, the chassis including a wall and at least one vent extending through the wall, each vent having a first opening on an inner surface of the wall and a second opening on an outer surface of the wall, wherein the vent is configured to allow passage of light from the second opening to the first opening, and The base frame includes at least one light shielding portion, and the at least one light shielding portion is configured to block light from entering the user's eyes through the vent hole.

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