System for waveguide projector with wide field of view
View Patent ↗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.
1. A waveguide display disposed in glasses, the waveguide display comprising:
a first diffractive input waveguide operable to receive input data from a first projector;
a second diffractive input waveguide operable to receive input data from a second projector; and
a diffractive output waveguide optically coupled to the first diffractive input waveguide and the second diffractive input waveguide and having a central normal, wherein the diffractive output waveguide receives light diffracted by the first diffractive input waveguide and light diffracted by the second diffractive input waveguide and is operable to:
direct image data associated with the first projector toward a first field of view displaced with respect to the central normal; and
direct image data associated with the second projector toward a second field of view displaced with respect to the central normal.
2. The waveguide display of claim 1 wherein the first field of view and the second field of view are tiled and the central normal passes through a boundary of each of the first field of view and the second field of view.
3. The waveguide display of claim 1 wherein:
the image data associated with the first projector has a first wavefront characterized by a first optical power; and
the image data associated with the second projector has a second wavefront characterized by a second optical power different from the first optical power.
4. The waveguide display of claim 1 further comprising a first input coupling element optically coupled to the first diffractive input waveguide and a second input coupling element optically coupled to the second diffractive input waveguide.
5. The waveguide display of claim 4 wherein the first input coupling element, the first diffractive input waveguide, the second input coupling element, the second diffractive input waveguide, and the diffractive output waveguide are coplanar.
6. The waveguide display of claim 1 wherein the first diffractive input waveguide is disposed on a first side of the diffractive output waveguide and the second diffractive input waveguide is disposed on an opposing side of the diffractive output waveguide.
7. A waveguide display disposed in glasses, the waveguide display comprising:
a first diffractive input waveguide operable to receive input data from a first projector;
a second diffractive input waveguide operable to receive input data from a second projector; and
a diffractive output waveguide optically coupled to the first diffractive input waveguide and the second diffractive input waveguide and having a central normal, wherein the diffractive output waveguide receives light diffracted by the first diffractive input waveguide and light diffracted by the second diffractive input waveguide and is operable to:
form a first image beam having a first wavefront characterized by a first optical power; and
form a second image beam having a second wavefront characterized by a second optical power different from the first optical power.
8. The waveguide display of claim 7 wherein the first optical power is positive and the second optical power is negative.
9. The waveguide display of claim 8 wherein;
the diffractive output waveguide is characterized by an emission plane;
the first image beam comprises a diverging wavefront and a center ray normal to the emission plane; and
the second image beam comprises a converging wavefront and a center ray normal to the emission plane.
10. The waveguide display of claim 7 wherein the first image beam and the second image beam are collinear.
11. The waveguide display of claim 7 further comprising a first input coupling element optically coupled to the first diffractive input waveguide and a second input coupling element optically coupled to the second diffractive input waveguide.
12. The waveguide display of claim 11 wherein the first input coupling element, the first diffractive input waveguide, the second input coupling element, the second diffractive input waveguide, and the diffractive output waveguide are coplanar.