Method and system for waveguide projector with wide field of view
A waveguide display disposed in glasses includes a first pupil expander assembly operable to project a first image defined by a first field of view, and a second pupil expander assembly disposed adjacent the first pupil expander assembly and operable to project a second image defined by a second field of view different from the first field of view. The first pupil expander assembly is operable to emit light at a first non-zero angle with respect to a first emission plane associated with the first pupil expander assembly. The second pupil expander assembly is operable to emit light at a second non-zero angle with respect to a second emission plane associated with the second pupil expander assembly. The first non-zero angle is opposite to the second non-zero angle.
1. A waveguide display disposed in glasses having a first lens frame having a first nasal region, a first peripheral region, and a first center disposed between the first nasal region and the first peripheral region, the waveguide display comprising:
a first pupil expander assembly disposed in the first lens frame and operable to project a first image defined by a first field of view, wherein the first pupil expander assembly is operable to propagate light in the first pupil expander assembly toward the first nasal region and emit light at a first non-zero angle with respect to a first emission plane associated with the first pupil expander assembly; and
a second pupil expander assembly disposed in the first lens frame adjacent the first pupil expander assembly and operable to project a second image defined by a second field of view different from the first field of view, wherein the second pupil expander assembly is operable to propagate light in the second pupil expander assembly toward the first peripheral region and emit light at a second non-zero angle with respect to a second emission plane associated with the second pupil expander assembly,
wherein the first non-zero angle is opposite to the second non-zero angle.
2. The waveguide display of claim 1 , wherein the first field of view is centered at a position between the first center and the first nasal region.
3. The waveguide display of claim 2 , wherein the second field of view is centered at a position between the first center and the first peripheral region.
4. The waveguide display of claim 1 , wherein the first field of view and the second field of view are tiled.
5. The waveguide display of claim 1 , wherein a portion of the first field of view overlaps with a portion of the second field of view.
6. The waveguide display of claim 1 , wherein the first pupil expander assembly comprises:
a first input coupling element operable to receive image data of the first image from a first projector;
a first orthogonal pupil expander optically coupled to the first input coupling element; and
a first exit pupil expander optically coupled to the first orthogonal pupil expander.
7. The waveguide display of claim 6 , wherein the second pupil expander assembly comprises:
a second input coupling element operable to receive image data of the second image from a second projector different from the first projector;
a second orthogonal pupil expander optically coupled to the second input coupling element; and
a second exit pupil expander optically coupled to the second orthogonal pupil expander.
8. The waveguide display of claim 7 , wherein the first input coupling element or the second input coupling element includes an input coupling grating.
9. The waveguide display of claim 1 , wherein the glasses further comprises a second lens frame having a second nasal region, a second peripheral region, and a second center disposed between the second nasal region and the second peripheral region, wherein the waveguide display further comprises:
a third pupil expander assembly disposed in the second lens frame and operable to project a third image defined by a third field of view, wherein the third pupil expander assembly is operable to propagate light in the third pupil expander assembly toward the second nasal region and emit light at a third non-zero angle with respect to a third emission plane associated with the third pupil expander assembly; and
a fourth pupil expander assembly disposed in the second lens frame adjacent the third pupil expander assembly and operable to project a fourth image defined by a fourth field of view different from the third field of view, wherein the fourth pupil expander assembly is operable to propagate light in the fourth pupil expander assembly toward the second peripheral region and emit light at a fourth non-zero angle with respect to a fourth emission plane associated with the fourth pupil expander assembly,
wherein the third non-zero angle is opposite to the fourth non-zero angle.
10. The waveguide display of claim 9 , wherein the first non-zero angle is opposite to the third non-zero angle, and wherein the second non-zero angle is opposite to the fourth non-zero angle.
11. A waveguide display disposed in glasses having a first lens frame having a first nasal region, a first peripheral region, and a first center disposed between the first nasal region and the first peripheral region, the waveguide display comprising:
a first pupil expander assembly disposed in the first lens frame and operable to project a first image defined by a first field of view, wherein the first pupil expander assembly comprises:
a first input coupling element operable to receive image data from a first projector and propagate light toward the first nasal region;
a first orthogonal pupil expander optically coupled to the first input coupling element; and
a first exit pupil expander optically coupled to the first orthogonal pupil expander and emit light at a first non-zero angle with respect to a first emission plane associated with the first pupil expander assembly, and
a second pupil expander assembly disposed adjacent the first pupil expander assembly and operable to project a second image defined by a second field of view different from the first field of view.
12. The waveguide display of claim 11 , wherein the second pupil expander assembly is disposed in a right lens frame of the glasses.
13. The waveguide display of claim 12 , wherein the first field of view is centered at a position between the first center and the first nasal region.
14. The waveguide display of claim 13 , wherein the second field of view is centered at a position between the first center and the first peripheral region.
15. The waveguide display of claim 11 , wherein the first field of view and the second field of view are tiled.
16. The waveguide display of claim 11 , wherein a portion of the first field of view overlaps with a portion of the second field of view.
17. The waveguide display of claim 11 , wherein the second pupil expander assembly comprises:
a second input coupling element operable to receive image data from a second projector different from the first projector and to propagate light in the second pupil expander assembly toward the first peripheral region;
a second orthogonal pupil expander optically coupled to the second input coupling element; and
a second exit pupil expander optically coupled to the second orthogonal pupil expander and to emit light at a second non-zero angle with respect to a second emission plane associated with the second pupil expander assembly.
18. The waveguide display of claim 11 , wherein the first exit pupil expander directs light toward an eye of a user of the glasses.