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1. (WO2019050781) Head-Mounted Display With Adjustment Mechanism
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CLAIMS

What is claimed is:

1. A head-mounted display to be worn by a user, comprising:

a housing;

an eye chamber to be positioned adjacent to eyes of the user; and

a support assembly that includes a headband and an adjustment mechanism that is operable to change fit of the headband relative to a head of the user in response to a control signal, wherein the adjustment mechanism includes a feedback component, and the control signal is generated based on output from the feedback component.

2. The head-mounted display of claim 1, wherein the adjustment mechanism includes an electric motor that changes fit of the headband relative to a head of the user by constricting or expanding a length of the headband.

3. The head-mounted display of claim 2, wherein the headband includes a first part and a second part that are interconnected by a gear rack to loosen or tighten the first part and the second part relative to each other by operation of the electric motor.

4. The head-mounted display of claim 2, wherein the headband includes a strap that is extendable and retractable by operation of the electric motor.

5. The head-mounted display of any of claims 1-4, wherein the feedback component is operable to measure tightness of the headband relative to a head of the user.

6. The head-mounted display of any of claims 1-4, wherein the adjustment mechanism includes an electric motor and the feedback component is operable to measure current draw of the electric motor.

7. The head-mounted display of claim 1, wherein the control signal is based in part on an input signal received from an input device.

8. The head-mounted display of claim 1, wherein the control signal is based in part on a head presence detector that outputs a signal representing whether a head of the user is present adjacent to the eye chamber.

9. The head-mounted display of claim 1, wherein the control signal is based in part on a hand contact detector that outputs a signal representing whether a hand of the user is in contact with the housing.

10. The head-mounted display of claim 1, further comprising:

an eye tracking system that is operable to measure motion of the housing relative to the eyes of the user, wherein the control signal is based in part on the motion of the housing relative to the eyes of the user.

11. The head-mounted display of claim 1, wherein content shown to the user is associated with a content type identifier, and the control signal is based in part on the content type identifier.

12. The head-mounted display of any of claims 1-4, wherein the headband is configured to extend peripherally around a head of the user.

13. A head-mounted display to be worn by a user, comprising:

a housing;

an eye chamber to be positioned adjacent to eyes of the user; and

a support assembly that includes a headband and an adjustment mechanism that is operable to change fit of the headband relative to a head of the user, wherein the adjustment mechanism includes a variable volume structure that changes fit of the headband relative to the head of the user by volumetric expansion or volumetric contraction.

14. The head-mounted display of claim 13, wherein the variable volume structure includes a fabric structure supported by shape-memory alloy wires that cause volumetric expansion or volumetric contraction of the variable volume structure in response to application of an electric current to the shape-memory alloy wires.

15. The head -mounted display of claim 13, wherein the variable volume structure includes one or more pneumatic bladders.

16. A method for adjusting a head-mounted display, comprising:

loosening an adjustable headband relative to a housing in response to detecting user contact with a first location and a second location on the housing; and

tightening the adjustable headband relative to the housing in response to detecting cessation of user contact with the first location or the second location on the housing.

17. The method of claim 16, wherein the first location on the housing is associated with a first hand contact detector that is operable to detect contact with a first hand of a user and the second location on the housing is associated with a second hand contact detector that is operable to detect contact with a second hand of the user.

18. The method of claim 16, wherein tightening the adjustable headband includes constricting the adjustable headband until a desired size is reached, wherein the desired size is based on a feedback signal.

19. A head-mounted display to be worn by a user, comprising:

a housing;

an eye chamber to be positioned adjacent to eyes of the user; and

a support assembly that is configured to extend over a head of the user, has a first portion that is connected to the housing, a second portion that is adjustably connected to the first portion, and a third portion that is adjustably connected to the second portion, wherein the third portion defines a free end for the support assembly that is free from connection to the housing.

20. The head-mounted display of claim 19, wherein first portion of the support assembly is connected to the second portion of the support assembly by a first spring -biased joint, and the second portion of the support assembly is connected to the third portion of the support assembly by a second spring biased joint.

21. The head-mounted display of any of claims 19 or 20, further comprising:

an adjustment mechanism for adjusting the support assembly in response to a control system.

22. The head-mounted display of claim 21, wherein the adjustment mechanism incudes one or more electric motors that control a first sliding joint between the first portion of the support assembly and the second portion of the support assembly, and a second sliding joint between the second portion of the support assembly and the third portion of the support assembly.

23. The head-mounted display of any of claims 19-22, wherein the support assembly includes a first cushion pad located on the first portion for engagement with the head of the user, a second cushion pad located on the second portion for engagement with the head of the user, and a third cushion pad located on the third portion for engagement with the head of the user.