Holographic near-eye display

Patent metadata

Field	Value
Publication number	US-10210844-B2
Application number	US-201514754451-A
Country	US
Kind code	B2
Filing date	Jun 29, 2015
Priority date	Jun 29, 2015
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

Embodiments are disclosed for display devices including holographic optical elements for directing light toward image producing panels. An example display device includes a phase modulating image producing panel, and a holographic optical element configured to receive collimated light and to output converging light toward the phase modulating image producing panel, the phase modulating image producing panel being configured to use at least a portion of the converging light to produce an image with collimated or diverging light.

First claim

The invention claimed is:

1. A display device comprising:
a phase modulating image producing panel; and
a holographic optical element configured to receive collimated light and to output converging light toward the phase modulating image producing panel, the phase modulating image producing panel being configured to diffract a portion of the converging light output by the holographic optical element to produce an image with the portion of the converging light diffracted and change the portion of the converging light to collimated or diverging light such that zero-order undiffracted light reflected by the phase modulating image producing panel remains converging.

2. The display device of claim 1 , further comprising an eye-tracking system configured to track a gaze direction of a user of the display device.

3. The display device of claim 2 , further comprising a directable light source controllable to direct light in a direction based upon the gaze direction to adjust a location at which the image is viewable.

4. The display device of claim 2 , further comprising a diffractive optical element configured to form a plurality of spatially separated eyeboxes in which the image is viewable.

5. The display device of claim 2 , wherein the phase modulating image producing panel is further controllable to modify a resolution of each of a plurality of portions of the image based on the gaze direction.

6. The display device of claim 5 , wherein the phase modulating image producing panel is controllable to produce the image via an array of tiled holograms.

7. The display device of claim 6 , wherein each of the tiled holograms is individually-addressable via addressing lines of a bus, an h-tree interconnect, a routed on-chip interconnect, or a pipelined distribution tree interconnect, wherein controlling the resolution of each of the tiled holograms comprises sending higher resolution data to tiled holograms in a foveal vision region than to tiled holograms in another vision region of the display.

8. The display device of claim 6 , wherein the array of tiled holograms is formed by providing multiple separate image producing panels that are spaced from one another.

9. The display device of claim 1 , further comprising a spatial light modulator, wherein the phase modulating image producing panel is configured to reflect converging zero order undiffracted light toward the spatial light modulator for image production.

10. The display device of claim 9 , wherein the spatial light modulator is controllable to produce one or more peripheral images configured to surround the image and a correction image configured to selectively attenuate the image.

11. A display device, comprising:
a light source;
a phase modulating image producing panel configured to produce a holographic image via light from the light source;
an eye-tracking system;
a processor configured to execute computer-readable instructions; and
a storage device comprising instructions stored thereon that are executable by the processor to
track, via the eye-tracking system, a gaze intersection with the display device,
control the phase modulating image producing panel to produce an image via an array of tiled holograms formed via the phase modulating image producing panel, the array of tiled holograms comprising a region of higher resolution tiled holograms closer to a gaze intersection and a region of lower resolution tiled holograms farther from the gaze intersection,
detect, via the eye-tracking system, a change in the gaze intersection, and
control the phase modulating image producing panel to increase a resolution of the region of lower resolution tiled holograms and to decrease a resolution of the region of higher resolution tiled holograms based upon the change in the gaze intersection.

12. The display device of claim 11 , wherein each of the tiled holograms is individually-addressable, and wherein decreasing the image resolution of the region of lower resolution tiled holograms comprises sending a larger number of replicated copies of smaller tiled holograms in the region of lower resolution holograms.

13. The display device of claim 12 , further comprising a plurality of phase modulating image display panels configured to form the tiled holograms, and wherein each phase modulating image panel is spaced from adjacent phase modulating image display panels.

14. The display device of claim 11 , further comprising a spatial light modulator, wherein the phase modulating image producing panel is configured to reflect converging light of a zero order toward the spatial light modulator for production of a different image than the image produced by the tiled holograms.

15. The display device of claim 14 , wherein the different image comprises one or more of a peripheral image configured to surround the image produced by the tiled holograms and a correction image configured to selectively attenuate the image produced by the tiled holograms.

16. A display device comprising:
a light source;
a phase modulating image producing panel;
a spatial light modulator; and
a holographic optical element,
wherein the holographic optical element is configured to receive collimated light from the light source and to output converging light toward the phase modulating image producing panel,
and wherein the phase modulating image producing panel is configured to form a foveal holographic image from one or more orders of diffracted light and to reflect converging light of a zero order toward the spatial light modulator for production of a different image.

17. The display device of claim 16 , further comprising an eye-tracking system configured to track a gaze direction of a user of the display device, wherein the phase modulating image producing panel is further controllable to modify a resolution of each of a plurality of portions of the foveal image based on the gaze direction.

18. The display device of claim 17 , wherein the phase modulating image producing panel is controllable to produce the foveal image via an array of tiled holograms, wherein each of the tiled holograms is individually-addressable, and wherein controlling the resolution of each of the tiled holograms comprises sending higher resolution data to tiled holograms in the center of the foveal vision region than to tiled holograms in another vision region of the display.

19. The display device of claim 18 , further comprising a plurality of phase modulating image display panels configured to form the tiled holograms, and wherein each tiled hologram is spaced from adjacent tiled holograms.

20. The display device of claim 16 , wherein the light source comprises a directable light source controllable to direct light in a direction based upon the gaze direction to adjust a location at which the foveal image is viewable, the display device further comprising a diffractive optical element configured to form a plurality of spatially separated eyeboxes in which the foveal and surround images are viewable.

21. The display device of claim 16 , wherein the spatial light modulator is further configured to selectively attenuate the foveal image displayed by the phase modulating image producing panel.

22. The display device of claim 16 , wherein the different image comprises one or more of a peripheral image configured to surround the foveal image and a correction image configured to selectively attenuate the foveal image.

Assignees

• Microsoft Technology Licensing Llc

Inventors

• Kollin Joel S
• Georgiou Andreas
• Travis Adrian
• Burger Douglas Christopher

Classifications

• G03H1/2294

  Addressing the hologram to an active spatial light modulator · CPC title

• G02B27/0093 Primary

  with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking · CPC title

• G09G2354/00

  Aspects of interface with display user · CPC title

• G02B2027/0174

  holographic · CPC title

• G03H2225/32

  Phase only · CPC title