Eyepiece providing color separation in planar waveguides using dichroic filters
First Claim
1. An eyepiece for projecting an image to an eye of a viewer, the eyepiece comprising:
- a first planar waveguide positioned in a first lateral plane, wherein the first planar waveguide comprises a first incoupling element optically coupled thereto, and wherein the first incoupling element is configured to diffract image light in a first wavelength range centered at a first wavelength;
a second planar waveguide positioned in a second lateral plane adjacent the first lateral plane, wherein the second planar waveguide comprises a second incoupling element optically coupled thereto, and wherein the second incoupling element is configured to diffract image light in a second wavelength range centered at a second wavelength different from the first wavelength; and
a first optical element positioned between the first planar waveguide and the second planar waveguide in lateral alignment with the first incoupling element, wherein the first optical element is configured to reflect image light in the first wavelength range.
3 Assignments
0 Petitions
Accused Products
Abstract
An eyepiece for projecting an image to an eye of a viewer includes a first planar waveguide positioned in a first lateral plane, a second planar waveguide positioned in a second lateral plane adjacent the first lateral plane, and a third planar waveguide positioned in a third lateral plane adjacent the second lateral plane. The first waveguide includes a first diffractive optical element (DOE) coupled thereto and disposed at a lateral position. The second waveguide includes a second DOE coupled thereto and disposed at the lateral position. The third waveguide includes a third DOE coupled thereto and disposed at the lateral position. The eyepiece further includes a first optical filter disposed between the first waveguide and the second waveguide at the lateral position, and a second optical filter positioned between the second waveguide and the third waveguide at the lateral position.
135 Citations
12 Claims
-
1. An eyepiece for projecting an image to an eye of a viewer, the eyepiece comprising:
-
a first planar waveguide positioned in a first lateral plane, wherein the first planar waveguide comprises a first incoupling element optically coupled thereto, and wherein the first incoupling element is configured to diffract image light in a first wavelength range centered at a first wavelength; a second planar waveguide positioned in a second lateral plane adjacent the first lateral plane, wherein the second planar waveguide comprises a second incoupling element optically coupled thereto, and wherein the second incoupling element is configured to diffract image light in a second wavelength range centered at a second wavelength different from the first wavelength; and a first optical element positioned between the first planar waveguide and the second planar waveguide in lateral alignment with the first incoupling element, wherein the first optical element is configured to reflect image light in the first wavelength range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification