Positioning and stabilizing structures and systems incorporating same

Abstract

To provide a head-mounted display unit which resolves user discomfort at localized stress points on a user's face, enables adjustment for allowing wide application head sizes, and is improved in comfort and usability.SOLUTION: A head-mounted display system includes a head-mounted display unit and a positioning and stabilizing structure structured and arranged to hold the head-mounted display unit in an operational position over a user's face in use. The positioning and stabilizing structure includes a rear support structure adapted to contact posterior regions of the user's head, and at least one connector structured and arranged to interconnect the rear support structure with the head-mounted display unit. The rear support structure is in the shape of a hoop comprising an occipital portion configured and arranged to engage the user's head along a portion of the occipital bone adjacent to a junction where the neck muscles attach to the occipital bone in use.SELECTED DRAWING: Figure 2A

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims the benefit of Australian Provisional Application No. 2020900953, filed March 27, 2020, U.S. Application No. 16 / 865,480, filed May 4, 2020, and U.S. Application No. 16 / 865,526, filed May 4, 2020, each of which is incorporated by reference in its entirety.

[0002] A portion of the disclosure of this patent document contains material that is entitled to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of this patent document or this patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but reserves all copyright rights therefor for all other purposes.

[0003] The present technology relates to a positioning and stabilizing structure for holding a head-mounted display unit, and an associated head-mounted display assembly including a display unit and a positioning and stabilizing structure. The present technology finds particular application in the use of virtual reality head-mounted displays and will be described in that context herein. However, it should be understood that the present technology may have broader application and may also be used in other head-mounted display configurations, including augmented reality displays. [Background technology]

[0004] Where any prior art is mentioned herein, it should be understood that such mention 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.

[0005] Virtual reality head-mounted displays allow users to experience a fully immersive virtual environment and have a wide range of applications in areas such as communication, training, medical and surgical care, engineering, and video games.

[0006] A virtual reality head-mounted display is typically provided as a system or assembly that includes a display unit arranged to be held in an operating position in front of a user's face. The display unit typically includes a housing that houses a display and a user interface structure constructed and arranged to be in a facing relationship with the user's face. The user interface structure may extend near the display and define a viewing opening to the display. The user interface structure may engage the user's face and may include a cushion for user comfort and / or may lightly seal to block ambient light from the display.

[0007] To hold the display unit in the correct operating position, the head-mounted display system further includes a positioning and stabilizing structure that is placed on the user's head. Until now, these positioning and stabilizing structures have been formed from straps or stretchable rigid structures that are typically applied to the user's head under tension to maintain the display unit in the operating position. Such systems tend to exert constricting pressure on the user's face, which can cause user discomfort at localized stress points. Previous systems can also be difficult to adjust to accommodate a wide range of applicable head sizes. Furthermore, the display unit and associated positioning and stabilizing structures are often heavy and difficult to clean, further limiting the comfort and ease of use of the system. Summary of the Invention [Problem to be solved by the invention]

[0008] Therefore, there is a need for an improved system that does not suffer from the above drawbacks. [Means for solving the problem]

[0009] One aspect of the present technology relates to a positioning and stabilizing structure for a head mounted display unit, including a rear support structure positioned to contact a region of a user's head in use, and opposing temporal connectors positioned on either side of the user's head in use and extending along the side regions of the user's head in use to interconnect the rear support structure to the display unit.

[0010] In some embodiments, the rear support structure includes a hoop having an occipital portion and a parietal portion. In some embodiments, the hoop or at least one of the occipital and parietal portions may be elastically stretchable along at least a portion of its length. In some embodiments, the hoop is flexible along at least a portion of its length. In some embodiments where the rear support structure is a hoop, the occipital portion may resist upward movement and extend lower on the user's head (as a result of its contact with the occipital region of the head), thereby providing an anchor for the system. In some embodiments, the hoop is oriented in a generally upright plane (one example of such an upright plane is the coronal plane).

[0011] In some forms, the rear support structure is positioned behind the base of the user's upper ear.

[0012] In some embodiments, the temporal connectors are rigid along at least a portion of their length. In some embodiments, the temporal connectors each include a temporal arm having a front end connected to the display unit and a rear end connected to the rear support structure. In some embodiments, the temporal arms are rigid. In some embodiments, the rear ends of the temporal arms are positioned behind the base of the user's superior ear.

[0013] In some embodiments, at least one of the temporal connectors further comprises an adjustment mechanism for adjusting the positioning and stabilizing structure to fit various head sizes, hi some embodiments, the adjustment mechanism is located at the connection between the posterior end of the temporal arm and the posterior support structure.

[0014] In some forms, the posterior support structure includes a connection tab that connects to the temporal arm, and an adjustment mechanism allows adjustment of the effective length of the connection tab. In some forms, the posterior end of the temporal arm incorporates an eyelet configured to receive the connection tab, and the adjustment mechanism includes a removable fastening arrangement for fastening the connection tab to the temporal arm. In some forms, the removable fastening arrangement can be configured to secure the free end of the connection tab back to the proximal portion of the connection tab. The removable fastening arrangement can take other forms, such as a clip or retainer that allows for friction, interference, snap, or other mechanical fastening arrangements.

[0015] In some forms, the positioning and stabilizing structure may further include a forehead support connector extending generally in the sagittal plane and connecting the rear support structure to an upper edge region of the display unit. In some forms, the forehead support connector may include a strap. In some forms, the forehead support connector strap may be elastically stretchable along at least a portion of its length. In some forms, the forehead support connector strap may be flexible along at least a portion of its length.

[0016] In some forms, the forehead support connector may further include an adjustment mechanism for adjusting the positioning and stabilizing structure to fit various head sizes, hi some forms, the adjustment mechanism may adjust the effective length of the straps of the forehead support connector when the forehead support connector is in that configuration.

[0017] In some forms, the forehead support connector further includes a forehead support rigidizer that provides rigidity to a portion of the forehead support connector. In some forms, the forehead support rigidizer provides rigidity to a portion of the forehead support connector that is located along the frontal region of the user's head. The range and positioning of the forehead support rigidizer can assist in proper positioning of the display unit and reduce pressure applied to the user's cheekbones. In some forms, the forehead support rigidizer can be adjustable (angularly or translationally) over other components of the forehead support connector, such as the straps of the forehead support connector, which can allow for fine positioning of the head-mounted display unit and can assist in improving user comfort and fit.

[0018] In some forms, the positioning and stabilizing structure further includes additional rigidizers that may bridge the posterior support structure and the temporal connector. In some forms, these additional rigidizers may help restrict movement of the display unit near the posterior support structure to further stabilize and support the system. In some forms, these additional rigidizers may limit hinge movement at the connection of the temporal connector to the posterior support structure. In some forms, these additional rigidizers may also extend along the occipital region of the posterior support structure to further anchor the display unit in the correct operating position. In some forms, these additional rigidizers may be adjustable (angularly or translationally) on other components of the forehead support connector to further aid in comfort, adjustability, and fit.

[0019] In some forms, the positioning and stabilizing structure may allow upward movement, e.g., upward pivoting, of the display unit (e.g., flip-up) so that the display unit can be moved to a non-operating position without removing the positioning and stabilizing structure. In some forms, this pivoting arrangement may provide a release mechanism in the forehead support connector and / or provide a limited hinge area in the temporal connector.

[0020] Any form of positioning and stabilizing structure described above may be incorporated into a hood or other headwear, either integrally or removably connected, and may also include other components incorporated therein, such as audio or haptic (tactile) stimulation or feedback.

[0021] One aspect of the present technology relates to a head-mounted display system including a head-mounted display unit and a positioning and stabilizing structure configured and arranged to hold the head-mounted display unit in an operating position on a user's face in use. The positioning and stabilizing structure includes a rear support structure adapted to contact a rear region of the user's head and at least one connector configured and arranged to interconnect the rear support structure to the head-mounted display unit. The rear support structure is hoop-shaped with an occipital portion configured and arranged to engage the user's head along the occipital bone in use (e.g., along a portion of the occipital bone adjacent the junction where the neck muscles attach to the occipital bone).

[0022] One aspect of the present technology relates to a positioning and stabilizing structure for holding a head-mounted display unit in an operating position on a user's face. The positioning and stabilizing structure includes a rear support structure adapted to contact a rear region of a user's head and at least one connector configured and arranged to interconnect the rear support structure to the head-mounted display unit. The rear support structure is hoop-shaped with an occipital portion configured and arranged to engage the user's head along the occipital bone in use (e.g., along a portion of the occipital bone adjacent the junction where the neck muscles attach to the occipital bone).

[0023] One aspect of the present technology relates to a positioning and stabilizing structure for holding a head-mounted display unit in an operating position on a user's face. The positioning and stabilizing structure includes a rear support structure adapted to contact a rear region of a user's head and opposing temporal connectors configured and arranged to interconnect the rear support structure to the head-mounted display unit. The opposing temporal connectors are positioned on either side of the user's head and extend along the side regions of the user's head. The rear support structure is hoop-shaped with an occipital portion configured and arranged to engage the user's head along the occipital bone in use (e.g., along a portion of the occipital bone adjacent the junction where the neck muscles attach to the occipital bone).

[0024] One aspect of the present technology relates to a head-mounted display system including a head-mounted display unit and a positioning and stabilizing structure configured and arranged to hold the head-mounted display unit in an operating position on a user's face during use. The positioning and stabilizing structure includes a rear support structure adapted to contact a rear region of the user's head and at least one connector configured and arranged to interconnect the rear support structure to the head-mounted display unit. At least the rear support structure includes a fabric material configured to conform to the rear region of the user's head.

[0025] One aspect of the present technology relates to a positioning and stabilizing structure for holding a head-mounted display unit in an operating position on a user's face. The positioning and stabilizing structure includes a rear support structure adapted to contact a rear region of the user's head and at least one connector constructed and arranged to interconnect the rear support structure to the head-mounted display unit. At least the rear support structure comprises a fabric material configured to conform to the rear region of the user's head.

[0026] One aspect of the present technology relates to a head-mounted display system including a head-mounted display unit and a positioning and stabilizing structure configured and arranged to hold the head-mounted display unit in an operating position on a user's face during use. The positioning and stabilizing structure includes a rear support structure adapted to contact a rear region of the user's head and opposing temporal connectors configured and arranged to interconnect the rear support structure to the head-mounted display unit, the opposing temporal connectors being positioned on either side of the user's head and extending along the side regions of the user's head. At least the rear support structure includes a fabric material configured to conform to the rear region of the user's head.

[0027] One aspect of the present technology relates to a positioning and stabilizing structure for holding a head-mounted display unit in an operating position on a user's face. The positioning and stabilizing structure includes a rear support structure adapted to contact a rear region of a user's head and opposing temporal connectors constructed and arranged to interconnect the rear support structure to the head-mounted display unit, the opposing temporal connectors being positioned on either side of the user's head and extending along the side regions of the user's head. At least the rear support structure includes a fabric material configured to conform to the rear region of the user's head.

[0028] One aspect of the present technology relates to a positioning and stabilizing structure for holding a head mounted display unit in an operating position on a user's face, the positioning and stabilizing structure including a rear support structure adapted to contact a region of the user's head and at least one connector or strap constructed and arranged to interconnect the rear support structure to the head mounted display unit.

[0029] The positioning and stabilizing structure and / or head-mounted display unit may be configured to help distribute contact forces from more sensitive areas of the user's face (forehead, upper cheeks below the eyes) to areas better suited to counteract the applied forces. For example, the rear support structure may be sufficiently flexible to evenly and snugly engage the rear of the user's head, e.g., anchoring above the occipital bone but above the neck muscles, and / or have high stiffness in one or more portions to better support the load of the head-mounted display unit in a comfortable and sustainable manner. For example, the rear support structure may be made from a breathable and flexible strap material (e.g., woven fabric) so that it can adjust to the shape and / or size of the user's head, and some portions of this strap material may be stiffened and / or have rigid portions added (e.g., sewn, laminated, clipped, inserted into a pocket, overmolded, and / or ultrasonically welded in place) to maintain stability and help offset some of the forces applied to portions of the patient's face via the head-mounted display unit.

[0030] In one example, the positioning and stabilizing structure and / or head mounted display unit may be configured to cooperate to reduce forces applied to the patient's forehead and / or cheekbones by effectively transferring those forces to the rear support and / or at least one connector or strap, and / or simply by distributing forces from the head mounted display unit more evenly along the head mounted display unit and / or along the rear support structure and / or at least one connector or strap, in a manner that adds comfort and / or stability, such as to prevent the head mounted unit from sliding off the user's face / forehead.

[0031] Another aspect of the present technology relates to a head mounted display system or assembly including any form of positional stabilization structure as described above and a display unit connected thereto.

[0032] Of course, some of the above aspects may form sub-aspects of the present technology, and various sub-aspects and / or aspects may be combined in various ways to form further aspects or sub-aspects of the present technology.

[0033] Other features of the present technology will become apparent in light of the information contained in the following detailed description, abstract, drawings, and claims.

[0034] The present technology is illustrated by way of example and not limitation in the accompanying drawings, in which like reference numerals include like elements: [Brief explanation of the drawings]

[0035] [Figure 1A] This is a lateral view of the head, including some features of the surface anatomy, including the superior and inferior aortic points. The approximate location of Frankfort horizontal is indicated. The coronal plane is also indicated. The superior and inferior, and anterior and posterior directions are also indicated. [Figure 1B] FIG. 1 is a frontal view of the bones of the skull, including the frontal, nasal, and cheekbones. [Figure 1C] 1 is a side view of the skull along with the outline of the head surface and some muscles. Exemplary bones shown include the frontal bone, sphenoid bone, nasal bone, zygomatic bone, maxilla, mandible, parietal bone, temporal bone, and occipital portion. [Figure 2A] 1A-1C are side, front, and top views of a head mounted display assembly in use in accordance with a first embodiment of the present technology; [Figure 2B] 1A-1C are side, front, and top views of a head mounted display assembly in use in accordance with a first embodiment of the present technology; [Figure 2C] 1A-1C are side, front, and top views of a head mounted display assembly in use in accordance with a first embodiment of the present technology; [Figure 2D] FIG. 2D is a cross-sectional view of a temporal arm of the head mounted display assembly of FIGS. 2A-2C in accordance with an embodiment of the present technology. [Figure 2E] FIG. 2D is a cross-sectional view of a temporal arm of the head mounted display assembly of FIGS. 2A-2C in accordance with another embodiment of the present technology. [Figure 3A] 10A-10C are side, front, and top views of a head mounted display assembly in use in accordance with a second embodiment of the present technology; [Figure 3B] 10A-10C are side, front, and top views of a head mounted display assembly in use in accordance with a second embodiment of the present technology; [Figure 3C] 10A-10C are side, front, and top views of a head mounted display assembly in use in accordance with a second embodiment of the present technology; [Figure 4A] 10A-10C are side, front, and top views of a head mounted display assembly in use in accordance with a third embodiment of the present technology; [Figure 4B] 10A-10C are side, front, and top views of a head mounted display assembly in use in accordance with a third embodiment of the present technology; [Figure 4C] 10A-10C are side, front, and top views of a head mounted display assembly in use in accordance with a third embodiment of the present technology; [Figure 5] FIG. 10 is a side view of a head mounted display assembly in use according to a fourth embodiment of the present technology. [Figure 6A] 13A-13C are side, rear, and top views of a head mounted display assembly in use according to a variation of the fourth embodiment of the present technology; [Figure 6B] 13A-13C are side, rear, and top views of a head mounted display assembly in use according to a variation of the fourth embodiment of the present technology; [Figure 6C] 13A-13C are side, rear, and top views of a head mounted display assembly in use according to a variation of the fourth embodiment of the present technology; DETAILED DESCRIPTION OF THE INVENTION

[0036] Before describing the present technology in further detail, it is to be understood that the present technology is not limited to the specific embodiments described herein, which may vary. It is also to be understood that the terminology used in the present disclosure is for the purpose of describing the specific embodiments described herein, and is not intended to be limiting.

[0037] The following description is provided in connection with various embodiments that may share one or more common characteristics and / or features. It should be understood that one or more features of any one embodiment may be combined with one or more features of another embodiment or other embodiments. In addition, any single feature or combination of features in any of these embodiments may constitute an additional embodiment.

[0038] 2A-2C show a support for a head mounted display system or assembly 10 according to a first embodiment of the present technology. Head mounted display system 10 comprises a head mounted display unit 12 and a positioning and stabilizing structure 14 (also referred to as a support and stabilizing structure) for maintaining or holding display unit 12 in an operative position on a user's face during use.

[0039] The display unit 12 includes a user interface structure 13 constructed and arranged to face the user's face. The user interface structure 13 extends near a display housed by the display unit housing 22. The user interface structure 13 may extend near the display and define a viewing opening to the display. The user interface structure 13 may extend around the user's eyes and engage (e.g., lightly seal) with the user's face, for example, along the user's nose, cheeks, and / or forehead.

[0040] As described below, head mounted display systems according to embodiments of the present technology are constructed and arranged to provide a balanced system, i.e., not be too tight at any one point along the user's head and / or face, while still providing the perception of a complete seal around the user's eyes, i.e., providing full immersion when using the virtual reality head mounted display. That is, head mounted display systems according to embodiments of the present technology are constructed and arranged to distribute pressure over a wider area of ​​the user's head, reducing hot spots or localized stress points, thereby providing a more uniform fit.

[0041] Furthermore, the head mounted display system according to the embodiment of the present technology includes a soft and flexible (e.g., elastic) material (e.g., a breathable material such as a fabric and foam composite) configured and arranged to enhance conformity to the user's head and provide cushioning for comfort. In addition, the head mounted display system according to the embodiment of the present technology includes a simple adjustment mechanism to facilitate adjustment while attached to the user's head and achieve a wide range of fit.

[0042] 2A-2C, the positioning and stabilizing structure 14 includes a rear support structure 16 (also referred to as a rear support hoop) adapted to contact a region of the user's head (e.g., positionable on the crown of the user's head) and at least one connector constructed and arranged to interconnect the rear support structure 16 to the head-mounted display unit 12. In the illustrated embodiment, the at least one connector includes opposing temporal connectors 18 located on each side of the user's head, the opposing temporal connectors 18 interconnecting the rear support hoop 16 to respective rear edge regions 20 of the display unit housings 22 of the display units 12, and a forehead support connector 24 extending across the user's forehead bone, the forehead support connector 24 interconnecting the rear support hoop 16 to the upper edge region 21 of the display unit housing 22. However, it should be understood that more or fewer connectors may be provided to interconnect the rear support structure 16 to the head-mounted display unit 12.

[0043] Each of the opposing temporal connectors 18 includes a temporal arm 26. Each temporal arm 26 includes a forward end 28 attached to a respective rear edge region 20 of the display unit housing 22 and a rear end 30 that forms part of a removable coupling for connecting the temporal arm 26 to the rear support hoop 16.

[0044] Each temporal arm 26 includes a rigidizer 32, a fabric element 34, and a tab 36 located at the rear end 30 for connecting to the rear support hoop 16. In one embodiment, a portion of each temporal arm 26, in use, contacts the area of ​​the user's head adjacent the supra-aural point, i.e., above the user's ear. In one embodiment, the temporal arms 26, in use, are positioned to extend generally along or parallel to the Frankfort horizontal plane of the head and above the user's cheekbones.

[0045] In one form, the rigidizer 32 may be encapsulated within the textile component 34 of each temporal arm 26. For example, FIG. 2D shows an example of a textile component 34 in the form of a cover configured to encapsulate the rigidizer 32. In this example, the textile component 34 includes a face-contacting side disposed on one side of the rigidizer 32 that can provide a soft, face-contacting surface 35 adapted to contact the patient's face during use. In some alternative forms, the rigidizer 32 may be sewn or otherwise attached (e.g., overmolded) to the textile component 34, or the textile component may be made from a material that can be selectively rigidified by heat treatment (e.g., thermal treatment). For example, FIG. 2E shows an example of a textile component 34 attached to the face-contacting side of the rigidizer 32 that can provide a soft, face-contacting surface 35 adapted to contact the patient's face during use. In one embodiment, the textile component 34 may comprise a textile material or a textile and foam composite (e.g., a breathable material, such as a multi-layer structure including an outer textile layer and an inner foam layer) that gently supports the rigidizer 32 to cushion it against the user's head for maximum comfort. The rigidizer 32 allows each temporal arm 26 to retain its in-use shape and configuration even when the user is not wearing the respective temporal arm 26. Maintaining the temporal arms 26 in an in-use state prior to use may advantageously prevent or limit distortion while the user is wearing the positioning and stabilizing structure 14 and may allow the user to quickly don or don the display system 10.

[0046] In one embodiment, the rigidizer 32 can be made from a rigid material such as Hytrel (a thermoplastic polyester elastomer). As such, the rigidizer 32 (or the temporal connector 18 or the temporal arm 26) is rigid along at least a portion of its length. The rigidity, i.e., inextensibility, of the rigidizer 32 of each temporal arm 26 limits the amount of extension or deformation of the temporal arm 26 during use. This configuration has the advantage of allowing tension forces to be more effectively, i.e., directly, translated by the temporal arm 26. In one embodiment, the rigidizer 32 can be more rigid than the posterior support hoop 16 and / or the connecting strap 42 (e.g., formed from an elastic and / or fibrous material). As a result, the temporal arm 26 of each opposing temporal connector 18 can be more rigid than other portions of the positioning and stabilizing structure 14, such as being more rigid than the posterior support hoop 16 and / or the connecting strap 42. The temporal arms 26 (or temporal connectors 18) may be stiffer along at least a portion of their length than other portions of the positioning and stabilizing structure 14, e.g., stiffer than the posterior support hoop 16 and / or the connecting straps 42. For example, in contrast to the rigidizer 32 (or temporal connectors 18 or temporal arms 26), the posterior support hoop 16 and / or the connecting straps 42 may be stretchable to a desired length, i.e., elastically extensible along at least a portion of their length.

[0047] In one embodiment, the rigidizer 32 may be structurally stiff or rigid to resist bending deformation vertically up and down along the user's face, but may also allow bending deformation toward or away from the user's face (e.g., to adjust for various facial widths). In one embodiment, the rigidizer 32 may be structurally stiff or rigid to resist deformation when twisted. In one embodiment, the rigidizer 32 may be structurally stiff or rigid to maintain a preformed shape.

[0048] In one embodiment, the rigidizer 32 forms a lever arm or means for pivoting about the rear support hoop 16. The rear support hoop 16 advantageously provides an anchor point for the positioning and stabilizing structure 14. The rigidizer 32 may articulate about the anchor point of the rear support hoop 16 so that the forehead support connector 24 can raise or lower the position of the display unit 12 relative to the user's nose. This configuration advantageously minimizes the amount of clamping pressure required to stabilize the display unit 12 on the user's head.

[0049] In one embodiment, the thickness and / or width of the temporal arm 26 may vary along at least a portion of its length, e.g., the temporal arm 26 may include wider and narrower portions along its length to facilitate connection and distribute loads.

[0050] In the illustrated embodiment, the rear support structure or hoop 16 is shaped like a hoop having a ring-like shape (similar to the ring-like shape of the rear support hoop 316 shown in the embodiment of FIG. 6B) and is configured with a three-dimensional contour that fits or conforms to the shape of the rear of the user's head, such as the crown portion of the user's head. The rear support hoop 16 includes a crown portion or crown strap portion 38 that is adapted to be adjacent to the parietal bone of the user's head in use, and an occipital portion or occipital strap portion 40 that is adapted to be adjacent to the occipital bone of the user's head in use. In one embodiment, the occipital portion 40 is preferably positioned along a portion of the occipital bone in use, for example, along a portion of the occipital bone adjacent to or near the junction where the neck muscles attach, and the crown portion 38 is preferably positioned posterior to the frontal plane in use. In one embodiment, the occipital portion 40 is adapted to be positioned along a portion of the occipital bone just above the junction where the neck muscles attach to the occipital bone. This junction may also be referred to as the external occipital protuberance (EOP). However, the exact location of the occipital portion 40 on the user's head may vary depending on the size and shape of the user's head; for example, the occipital portion 40 may be located adjacent to, directly above, or directly below the portion of the occipital bone where the neck muscles attach. In one embodiment, the occipital portion 40 may be positioned below or below the occipital bone near the junction where the neck muscles attach. This hoop-shaped configuration (e.g., circular, oval, or partially circular / oval, or C-shaped) of the rear support hoop 16 anchors the positioning and stabilizing structure 14 around the rear or posterior protuberance of the user's head, thereby providing an effective support structure for supporting weight (i.e., the display unit) at the front of the user's head. The rear support hoop 16 may be formed from an elastic material, the elasticity of which may be used to stretch the hoop and hold the rear support hoop 16 firmly in place.

[0051] The rear support hoop 16 further includes opposing connecting straps or tabs 42. The straps 42 are adjustable and operate to change the distance between the rear support hoop 16 and the display unit housing 22 of the display unit 12. Each of the straps 42, in use, is threaded through an eyelet 44 in the tab 36 of the respective temporal arm 26. The length of each strap 42 passing through the tab 36 of the respective temporal connector 18 can be adjusted by threading the strap 42 through its respective eyelet 44 and pulling it slightly. After passing through the eyelets 44 in the tabs 36, the straps 42 can be secured to themselves using, for example, a hook-and-loop fastening mechanism, which allows for fine or micro-adjustment of the straps for comfort and fit (e.g., tightness). Thus, the distance between the rear support hoop 16 and the display unit housing 22 can be adjusted to fit various head sizes. Such an adjustable strap arrangement also allows for adjustment while the system is on the user's head, by the user pulling the strap 42 rearward to tighten it, for example.

[0052] In one embodiment, the thickness and / or width of the rear support hoop 16 and / or straps 42 may vary along at least a portion of their length. For example, the rear support hoop 16 may include wider and thinner portions along its length, such as a wider portion adjacent the straps 42, to facilitate connection to the temporal arms 26 and distribute the load. Also, the straps 42 may be thinner along their free ends to facilitate threading through the eyelets 44 of the respective temporal arms 26.

[0053] In one embodiment, the rear support hoop 16 is generally vertically oriented, i.e., disposed in a vertical plane generally parallel to the coronal plane. This positioning of the rear support hoop 16 properly orients the rear support hoop 16 at the top of the user's head to support the lateral, i.e., horizontal, tension applied by the connecting straps 42 and to support the weight of the display unit 12 in front of the user's head during use.

[0054] The rear support hoop 16 and the connecting straps 42 may be formed from elastic and / or woven materials to help conform to the shape of the user's head. The rear support hoop 16 and the connecting straps 42 may, for example, provide tension. Such elastic material behind the user's head may also facilitate lifting the display unit 12 away from the user's face during use, such as moving the display unit 12 away from the user's eyes to speak with someone while the positioning and stabilizing structure 14 remains on the user's head. For example, the support hoop 16 may be made of neoprene or other woven-foam composites (e.g., breathable materials such as multi-layer structures including an outer woven layer and an inner foam layer), or spacer fabric. The woven fabric may provide a soft support structure to stabilize the display unit 12 on the user's head, advantageously allowing the positioning and stabilizing structure 14 to cushion against the user's head for maximum comfort.

[0055] The forehead support connector 24 of the positioning and stabilizing structure 14 includes a forehead support strap 48 positioned to extend generally along or parallel to the sagittal plane of the user's head. The forehead support strap 48 is adapted to connect between the upper edge region 21 of the display unit housing 22 and the crown portion 38 of the rear support hoop 16. In one embodiment, the strap 48 can be non-adjustably connected, such as by welding, to the crown portion 38, and the strap 48 can be adjustably connected to the display unit housing 22 by an adjustment mechanism 50.

[0056] The forehead support strap 48 is adjustable to allow for dimensional control of the forehead support connector 24. As best shown in FIG. 2C , an end or tab portion 54 of the forehead support strap 48 is threaded through a forehead support hole 52 in the upper edge region 21 of the display unit 12 during use. After the forehead support strap 48 passes through the hole 52 in the display unit 12, it may be secured to itself using, for example, a hook and loop fastening means, which allows for fine or micro-adjustment of the strap for comfort and fit (e.g., tightness). In one embodiment, the forehead support strap 48 may comprise a similar material to the rear support hoop 16 and / or the connecting strap 42, such as a woven foam composite (e.g., a breathable material such as a multi-layer structure including an outer woven fabric layer and an inner foam layer).

[0057] The forehead support connector 24 supports the weight of the display unit 12. The length of the forehead support strap 48 between the upper edge region 21 of the display unit 12 and the crown portion 38 of the rear support hoop 16 can be adjusted by slightly pulling the strap 48 through the holes 52. Therefore, the forehead support strap 48 can be adjusted to raise or lower the position of the display unit 12 relative to the user's nose, such as by adjusting it to tilt or lift the display unit 12 relative to the user's face. This adjustment can move the display unit housing 22 away from the user's nose, relieving pressure felt on the face, nose, and / or cheeks. The forehead support connector 24 secures the display unit 12 in place to prevent it from sliding downward or sideways on the user's head.

[0058] In one embodiment, the thickness and / or width of the forehead support strap 48 may vary along at least a portion of its length, for example, the forehead support strap 48 may include wider and thinner portions along its length to facilitate connection and distribute loads.

[0059] In one embodiment, the adjustment mechanism 50 is positioned so that it does not contact the frontal bone region of the user during use.

[0060] In an alternative embodiment, the positioning and stabilizing structure 14 does not include the forehead support connector 24 / forehead support strap 48. See, for example, the embodiment of Figures 4A-4C.

[0061] 3A-3C show a support for a head-mounted display system or assembly 110 according to a second embodiment of the present technology. In FIGS. 3A-3C, like reference numerals refer to like parts as in FIGS. 2A-2C, such as a display unit 112, a user interface structure 113, a positioning and stabilizing structure 114, a rear support hoop 116, temporal connectors 118, a rear edge region 120, a display unit housing 122, a forehead support connector 124, temporal arms 126, a crown portion 138, an occipital portion 140, a connection strap 142, a forehead support strap 148, an adjustment mechanism 150, a forehead support hole 152, and an end portion 154, with the addition of 100 allowing distinction between embodiments. Referring to FIG. 3C, the forehead support connector 124 may further include a forehead support rigidizer 156. The forehead support rigidizer 156 can further stabilize and support the display unit 112 on the user's nose and cheeks, i.e., relieve pressure on the user's nose and cheeks. The forehead support rigidizer 156 can connect to the upper edge region 121 to form at least a portion of the forehead support hole 152 for receiving the end or tab portion 154 of the forehead support strap 148 for sizing adjustment of the positioning and stabilizing structure 114. As shown, the forehead support strap 148 is positioned below the forehead support rigidizer 156 for comfort and load distribution.

[0062] In some configurations, the adjustment mechanism 150 may further include an angle adjustment mechanism (not shown) for easily lifting the visor from an in-use position to a stowed or non-use position.

[0063] In one embodiment, the system may be constructed and arranged to redistribute one or more components from the display unit to the positioning and stabilizing structure, e.g., to redistribute weight from the display unit to the positioning and stabilizing structure. For example, the forehead support rigidizer 156 and / or forehead support strap 148 may be used to at least partially support one or more non-local essential electrical components, such as a battery or hard drive storage device, shifting weight from the front of the user's head to a more central position, i.e., offsetting the weight of the display unit. In an alternative example, one or more components from the display unit may be at least partially supported by the rear support hoop 116 and / or the temporal connectors 118 to redistribute weight.

[0064] 4A-4C show a support for a head-mounted display system or assembly 210 according to a third embodiment of the present technology. In FIGS. 4A-4C, like reference numerals refer to like parts as in FIGS. 2A-2C, with the addition of 200 to distinguish between embodiments, such as a display unit 212, a user interface structure 213, a positioning and stabilizing structure 214, a rear support hoop 216, temporal connectors 218, a rear edge region 220, a display unit housing 222, temporal arms 226, a crown portion 238, an occipital portion 240, and a connecting strap 242. In the third embodiment, the support for the head-mounted display assembly 210 does not include a forehead support. That is, the display unit 212 is supported by the positioning and stabilizing structure 214 without a forehead support connector or a forehead support strap.

[0065] FIG. 5 shows a support for a head-mounted display system or assembly 310 according to a fourth embodiment of the present technology. In FIG. 5, like reference numerals indicate like parts to FIGS. 2A-2C , with the addition of 300 to distinguish between embodiments, such as a display unit 312, a user interface structure 313, a positioning and stabilizing structure 314, a rear support hoop 316, a temporal connector 318, a display unit housing 322, a forehead support connector 324, a temporal arm 326, a rigidizer 332, a crown portion 338, an occipital portion 340, and a forehead support strap 348. In the fourth embodiment, the support for the head-mounted display system 310 includes opposing temporal connectors 318, each having a temporal arm 326 with an elongated rigidizer 358. Each elongated rigidizer 358 can extend from its respective temporal arm 326 to the rear support hoop 316 to provide enhanced support for the display unit 312 during use. Each elongated rigidizer 358 may extend along a portion of the rear support hoop 316 and may extend into one or both of the parietal portion 338 and the occipital portion 340. For example, each elongated rigidizer 358 may have a Y-shape as shown in FIG. 5 , extending into both the parietal portion 338 and the occipital portion 340. Alternatively, each elongated rigidizer 358 may extend only into one of the parietal portion 338 and the occipital portion 340, for example, extending only along the occipital portion 340 as shown in FIG. 6A below. In the embodiment of FIG. 5 , the parietal and occipital portions of the elongated arms of the rigidizer 358 are provided along the parietal and occipital portions 338 and 340 of the rear support hoop 316, which are positioned proximal to the parietal and occipital bones of the user's head, to support the respective portions of the rear support hoop 316.

[0066] The extension rigidizer 358 increases the length of the temporal connector 318, increasing the lever arm moment generated near the rear support hoop 316. Compared to the first and second embodiments, the larger lever arm extends the moment of inertia further back on the user's head during use. This reduces the tension applied to the forehead support connector 324 to support the display unit 312, thereby providing greater comfort to the user.

[0067] Additionally, the extended arms of the rigidizer 358 may support the weight of the display unit 312 and the clamping force applied by the tension induced in the positioning and stabilizing structure 314, distributing pressure more evenly across the user's head.

[0068] The extended arms of the rigidizer 358 help prevent the posterior support hoop 316 of the positioning and stabilizing structure 314 from moving vertically upward on the user's head when tension is applied to the forehead support connector 324. The extended arms of the rigidizer 358 can more effectively secure the occipital portion 340 of the posterior support hoop 316 along the corresponding occipital bone of the user's head (e.g., along the portion of the occipital bone adjacent the junction where the neck muscles attach to the occipital bone).

[0069] 6A-6C show a variation of the fourth embodiment of FIG. 5. In this embodiment, each of the temporal arms 326 includes a biased extension rigidizer 360. In use, each biased extension rigidizer 360 can extend from the respective temporal arm 326 to the occipital portion 340 of the rear support hoop 316, i.e., in a generally J-configuration, to provide enhanced support for the display unit 312.

[0070] The biased extension rigidizer 360 extends along a portion of the occipital bone, for example, adjacent the junction where the neck muscles attach to the occipital bone, to firmly anchor the positioning and stabilizing structure 314 and support the display unit 312 above the user's nose and cheeks.

[0071] As best shown in Figures 6A and 6B, occipital and temporal adjustment mechanisms 362, 364 may be provided on the temporal arm 326 and the biased elongated rigidizer 360. The intermediate adjustment mechanism 362 may be attached near the mid-region of the occipital portion between the opposing arms of the biased elongated rigidizer 360. In one embodiment, the intermediate adjustment mechanism 362 may be in the form of a strap that is threaded through opposing holes 363 in the rear ends 368 of each of the opposing arms of the biased elongated rigidizer 360 (see Figure 6B). The distance between the opposing arms of the rigidizer 360 can be controlled by slightly pulling the strap 362 through the holes 363.

[0072] The temporal adjustment mechanism 364 can be positioned on the temporal arm 326 along the temporal region of the user's head. The temporal adjustment mechanism 364 is adjustable and operable to vary the distance between the biased extension rigidizer 360 and the display unit housing 322.

[0073] The head mounted display systems described above are examples of alternatives to the present technology that are constructed and arranged to enhance comfort, fit range, ease of use, system architecture, usability in medical environments, and manufacturability.

[0074] Head-mounted display systems according to embodiments of the present technology enhance comfort by minimizing facial markings and pain caused by prolonged use. For example, comfort can be achieved by providing global load distribution that optimizes load across all contact surfaces by avoiding or minimizing load on areas prone to discomfort and redistributing that load to areas that are more comfortable, such as avoiding or minimizing load on the bridge and sides of the nose and applying or redistributing that load to the top and / or back of the head. Comfort can also be achieved by providing localized load distribution that distributes load evenly through design and material selection in areas of the face where contact is unavoidable; for example, contact points around the eyes can be provided with compliant materials that distribute load evenly and avoid pain points / facial markings. Additionally, comfort can be achieved by minimizing weight, since a lower overall system weight requires less tension to position and maintain the system in the correct configuration. In this regard, head mounted display systems according to embodiments of the present technology provide components that are optimized to minimize component size and number to achieve fit range, comfort, and minimal design (e.g., low profile) to achieve correct configuration, e.g., function and use of robust and lightweight materials.

[0075] A head-mounted display system according to an embodiment of the present technology enhances fit range or overall fit without sacrificing comfort, ease of use, and cost. Fit range can be achieved by providing adjustability, for example, through geometric shape and material selection and adjustment mechanisms. Components of the positioning and stabilizing structure can be designed, and materials selected, to provide a desired force-to-displacement ratio; for example, a strap can stretch to a desired length under a predetermined force. Adjustment mechanisms offer simplicity, such as manually adjusting and setting the size of the positioning and stabilizing structure and associated straps, and minimizing the size of components while maximizing ease of use, such as one-handed adjustment of straps or alternative use of magnetic clips for connection. Additionally, adjustment mechanisms provide minimal size and weight with optimal materials and minimal components, reducing the bulk of the adjustment mechanism. Furthermore, an expanded fit range can be achieved through anthropometry, which can be designed to fit the optimal anthropometry range for a desired market.

[0076] A head-mounted display system according to an embodiment of the present technology enhances usability with hassle-free, simple setup solutions and solutions with low dexterity thresholds. For example, hassle-free setup can be achieved with self-adjusting solutions including stretchable materials or simple mechanical actuation that requires only a few fine adjustments to achieve a precise fit. The system can also include adjustment and locking solutions for enhanced usability (i.e., set-and-forget), such as mechanisms for guiding adjustments (e.g., magnets) and locking mechanisms for setting the adjustments (e.g., clips). Furthermore, the system provides ease of use by allowing adjustments when worn by users with limited dexterity and / or minimal vision.

[0077] A head-mounted display system according to an embodiment of the present technology provides an enhanced system architecture that optimizes component location to maximize comfort, fit range, and ease of use while minimizing cost. For example, the system may provide excellent weight distribution, with electrical and / or mechanical components ideally positioned for comfort. The system may also provide modularity to allow components to be selected or upgraded based on user preference, such as preference-based selection of electrical components, face-contacting cushions, straps, and / or earphones.

[0078] Head mounted display systems according to embodiments of the present technology may be more suitable for use in medical environments, for example, the systems may be washable for reuse in medical environments and / or may be biocompatible with and / or washable with select materials that meet biocompatibility requirements.

[0079] A head mounted display system according to embodiments of the present technology enhances manufacturability by providing a low cost, mass producible solution while maintaining high quality and functionality.

[0080] In the claims that follow and in the above description of embodiments of the present technology, unless the context otherwise requires by reason of express language or necessary implication, the word "comprise" or variations such as "comprising" are used in an inclusive sense, i.e., for the purpose of specifying the presence of stated features, but not excluding the presence or addition of further features in various embodiments of the present technology.

[0081] Although the technology herein has been described with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the technology. In some cases, terms and symbols may indicate specific details unnecessary for the practice of the technology. For example, although the terms "first" and "second" (etc.) are used, unless otherwise specified, these terms are not intended to indicate any order but are used to distinguish between separate elements or embodiments. Furthermore, although the process steps in the method may be described or illustrated in an ordered manner, such an order is not required. Those skilled in the art will recognize that such an order can be changed and / or aspects can be performed simultaneously or even synchronously.

[0082] It is therefore to be understood that numerous modifications may be made in the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present technology. [Explanation of symbols]

[0083] Head-mounted display system 10 Display Unit 12 User Interface Structure 13 Positioning and stabilizing structures 14 Rear support hoop 16 Temporal Connector 18 Trailing edge area 20 Upper border area 21 Display unit housing 22 Forehead support connector 24 Temporal Arm 26 Front end 28 Rear end 30 Rigidizer 32 Textile components 34 Face contact surface 35 Tab 36 Parietal area 38 Occipital area 40 Connecting strap 42 Eyelets 44 Adjustment mechanism 50 Forehead support hole 52 Tab part 54 Head-mounted display system 110 Display Unit 112 User Interface Structure 113 Positioning and Stabilizing Structures 114 Rear support hoop 116 Temporal Connector 118 Trailing edge area 120 Upper border area 121 Display unit housing 122 Forehead support connector 124 Temporal Arm 126 Parietal area 138 Occipital area 140 Connecting strap 142 Forehead support strap 148 Adjustment mechanism 150 Forehead support hole 152 Tab part 154 Forehead support rigidizer 156 Head-mounted display system 210 Display Unit 212 User Interface Structure 213 Positioning and Stabilizing Structures 214 Rear support hoop 216 Temporal Connector 218 Trailing edge area 220 Display unit housing 222 Temporal Arm 226 Parietal area 238 Occipital area 240 Connecting strap 242 Head-mounted display system 310 Display Unit 312 User Interface Structure 313 Positioning and Stabilizing Structures 314 Rear support hoop 316 Temporal Connector 318 Temporal Connector 318 Display unit housing 322 Forehead support connector 324 Temporal Arm 326 Rigidizer 332 Parietal area 338 Occipital area 340 forehead support strap 348 Extension Rigidizer 358 Biased Extension Rigidizer 360 Intermediate adjustment mechanism 362 Hole 363 Temporal adjustment mechanism 364 Rear end 368

Claims

1. a positioning and stabilizing structure configured to hold a head mounted display unit in front of a user's eyes during operation, the positioning and stabilizing structure comprising: a rear support structure configured to contact a rear region of the user's head; a pair of connecting straps connected to the rear support structure and configured to adjust the distance between the rear support structure and the head mounted display unit; a forehead support connector including a forehead support strap extending substantially along a sagittal plane of the user and configured to connect the rear support structure and an upper edge region of the head mounted display; Equipped with the rear support structure has a three-dimensional hoop-like shape prior to contacting the user's head, the hoop comprising an occipital portion configured and arranged to engage the user's head along a portion of the occipital bone, and a parietal portion configured and arranged to overlie a parietal bone of the user's head in use; The pair of connecting straps are disposed between the occipital portion and the parietal portion, the forehead support strap is connected to the crown portion of the rear support structure; the rear support structure, the pair of connecting straps, and the forehead support strap comprise a woven material configured to conform to the user's head; the forehead support strap and the pair of connecting straps each have a width that can vary along at least a portion of their length; the forehead support connector further comprising a forehead support rigidizer that provides rigidity to a portion of the forehead support connector. Positioning and stabilizing structures.

2. The positioning and stabilizing structure of claim 1 , wherein the fabric material is an outer layer, and the posterior support structure further comprises an inner foam layer surrounded by the fabric material.

3. 3. The positioning and stabilizing structure of claim 1 or 2, wherein the rear support structure, the connecting straps, and / or the forehead support connector comprise a fabric and foam composite configured to conform to the user's head.

4. 4. The positioning and stabilizing structure of claim 1, wherein the forehead support connector is non-adjustably connected to a crown portion of the posterior support structure.

5. 5. The positioning and stabilizing structure of claim 1, wherein the forehead support connector has an end that is selectively threaded through a forehead support hole in the head-mounted display, and the forehead support connector is secured to itself using hook and loop fastening means for adjustably securing it to the head-mounted display.

6. The positioning and stabilizing structure of claim 1 , wherein the pair of connecting straps comprises an elastic material.

7. The positioning and stabilizing structure of claim 6 , wherein said elastic material is a neoprene material.

8. 8. The positioning and stabilising structure of claim 1, wherein the hoop, in use, is oriented in a plane substantially parallel to and posterior to the coronal plane of the user.

9. 9. The positioning and stabilizing structure of claim 1, wherein the rear support structure comprises a ring shape having a three-dimensional contour curve configured to conform to the shape of the rear of the user's head.

10. further comprising opposing temporal connectors configured to interconnect the pair of connecting straps to the head-mounted display unit, the opposing temporal connectors being positioned on either side of the user's head and extending along a temporal region of the user's head; Each of the opposing temporal connectors includes a temporal arm, the temporal arm having a front end connected to the head mounted display unit and a rear end connected to each of the pair of connecting straps. A positioning and stabilising structure according to any one of claims 1 to 9.

11. The positioning and stabilizing structure of claim 10 , wherein each of the temporal connectors is positioned to extend generally along or parallel to the Frankfort horizontal plane of the head and above the cheekbone of the user.

12. The positioning and stabilizing structure of claim 10 , wherein each of the temporal connectors is rigid along at least a portion of its length.

13. The positioning and stabilizing structure of claim 10 , wherein each of the temporal connectors includes a tab configured to be connected to a respective one of the pair of connecting straps.

14. 14. The positioning and stabilizing structure of claim 13, wherein each of the tabs includes an eyelet through which each of the pair of connecting straps is threaded and secured thereto using hook and loop fastening means.

15. each of the pair of connecting straps is removably threaded through a respective tab of the temporal connector; the pair of connecting straps including an elastic material configured to adjust the length of the connecting straps relative to each of the temporal connectors; 14. The positioning and stabilizing structure of claim 13.

16. a head mounted display configured to generate a computer generated image for a user; A positioning and stabilising structure according to any one of claims 1 to 15, detachably connected to the head mounted display; A head-mounted display unit comprising:

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