HEAD MOUNTED DISPLAY AND OPTICAL POSITION ADJUSTMENT METHOD OF THE SAME

• US 20150269784A1
• Filed: 06/08/2015
• Published: 09/24/2015
• Est. Priority Date: 04/08/2010
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Miyawaki, Tetsuyuki, Matsumura, Ikuo
• Granted Patent: US 9,569,897 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 2027/0109 comprising details concerning the making of holograms
• CPC Class Codes: G02B 2027/0134 of stereoscopic type
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0161 characterised by the relative positioning of the constitutive elements
• CPC Class Codes: G02B 2027/0174 holographic
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 27/0103 comprising holographic elements
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G06F 3/012 Head tracking input arrangements
• CPC Class Codes: G06F 3/1423 controlling a plurality of local displays, e.g. CRT and flat panel display
• CPC Class Codes: G06T 19/006 Mixed reality object pose determination, tracking or camera calibration for mixed reality G06T7/00
• CPC Class Codes: G09G 2340/0464 Positioning
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 2356/00 Detection of the display position w.r.t. other display screens
• CPC Class Codes: G09G 3/002 to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: H04N 13/344 with head-mounted left-right displays
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

Disclosed herein is an optical position adjustment method of a head mounted display, the head mounted display including (a) an eyeglass type frame worn on the head of a viewer, and (b) two image display devices for the right and left eyes attached to the frame, and each of the image display devices including (A) an image forming device, and (B) an optical device adapted to receive, guide and emit light emitted from the image forming device, wherein the optical position adjustment method includes the step of: controlling an image signal that is supplied to the image forming device making up at least one of the image display devices so as to control the position of the image displayed on the optical device making up at least one of the image display devices and adjust the mutual positions of the two images.

Claims

1. A display apparatus, including:

an image forming device; and

an optical device configured to reflect light emitted from the image forming device,

wherein the image forming device is configured to control an image signal for display by the optical device according to a distance from a viewer to a target such that a convergence angle of the viewer can be adjusted with the distance from the viewer to the target.

2. The display apparatus of claim 1, wherein the image forming device is configured to control a received image signal so as to control a position of an image displayed by the optical device of the image display device and adjust a position of the image.

3. The display apparatus of claim 1, wherein the image forming device is configured to adjust the position of the image by a combination of horizontal and vertical movements and rotation of the image displayed on the optical device of the image display device.

4. The display apparatus of claim 1, wherein the optical device is see-through.

5. The display apparatus of claim 1, wherein the distance from the viewer to the target is provided at least in part via information transmitted to the display apparatus from an external equipment.

6. The display apparatus of claim 1, further comprising a distance measurement device adapted to obtain distance information by measuring the distance to the target from the viewer.

7. The display apparatus of claim 1, further comprising a light reception sensor for obtaining environment luminance information, wherein the image forming device is configured to control a luminance of the image signal based at least in part on the environment luminance information.

8. The display apparatus of claim 1, wherein the image forming device is configured to control the image signal to comprise text based at least in part on the distance from the viewer to the target.

9. The display apparatus of claim 1, wherein the image forming device is configured control the image signal so that a position of a virtual image formed by the optical device changes over time.

10. The display apparatus of claim 9, wherein the position of the virtual image is changed to reduce a viewer'"'"'s eye fatigue.

11. The display apparatus of claim 9, wherein the position of the virtual image is changed according to a predetermined schedule.

12. The display apparatus of claim 9, wherein the position of the virtual image is changed in a horizontal direction.

13. The display apparatus of claim 1, wherein the image forming device comprises a digital micromirror device (DMD).

14. The display apparatus of claim 1, wherein the image forming device comprises a Micro Electro Mechanical Systems (MEMS).

15. The display apparatus of claim 1, wherein the image forming device comprises a laser element.

16. A display apparatus comprising:

an image display device, configured to control a received image signal based at least in part on a distance from a viewer to a target, and wherein a position of a virtual image formed by the image display device is changed over time.

17. The display apparatus of claim 16, wherein the position of the virtual image is changed according to a predetermined schedule.

18. The display apparatus of claim 16, wherein the position of the virtual image is changed in a horizontal direction.

19. The display apparatus of claim 16, wherein the image display device comprises a digital micromirror device (DMD).

20. The display apparatus of claim 16, wherein the image display device comprises a Micro Electro Mechanical Systems (MEMS).

21. The display apparatus of claim 16, wherein the image display device comprises a laser element.

22. A display apparatus comprising:

an image display device, configured to control a received image signal based at least in part on a distance from an viewer to a target, and wherein a distance to a virtual image formed by the image display device is changed over time.

23. The display apparatus of claim 22, wherein the distance of the virtual image is changed according to a predetermined schedule.

24. The display apparatus of claim 22, wherein the image display device comprises a digital micromirror device (DMD).

25. The display apparatus of claim 22, wherein the image display device comprises a Micro Electro Mechanical Systems (MEMS).

26. The display apparatus of claim 22, wherein the image display device comprises a laser element.