US 12,326,562 B2
Waveguide display system with wide field of view
Oksana Shramkova, Liffré (FR); Valter Drazic, Betton (FR); and Valerie Allie, Saint-Armel (FR)
Assigned to InterDigital CE Patent Holdings, SAS, Paris (FR)
Appl. No. 17/913,816
Filed by InterDigital CE Patent Holdings, SAS, Paris (FR)
PCT Filed Mar. 22, 2021, PCT No. PCT/EP2021/057234
§ 371(c)(1), (2) Date Sep. 22, 2022,
PCT Pub. No. WO2021/191132, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 20315042 (EP), filed on Mar. 23, 2020; and application No. 20315216 (EP), filed on Apr. 23, 2020.
Prior Publication US 2024/0210612 A1, Jun. 27, 2024
Int. Cl. G02B 27/01 (2006.01); F21V 8/00 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 6/0016 (2013.01); G02B 6/0036 (2013.01); G02B 6/0076 (2013.01); G02B 6/0088 (2013.01); G02B 2027/0112 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0174 (2013.01)] 13 Claims
OG exemplary drawing
 
11. A method of operating an optical system, the method comprising:
directing light from a light source and input at an input region of the optical system, the light representing an image, onto a first transmissive diffractive in-coupler (DG1) of a first waveguide;
using the first transmissive diffractive in-coupler to couple into the first waveguide a first portion of the light corresponding to blue light, input at the input region at a first incidence angle range, and green light, input at the input region at a third incidence angle range, and using the first transmissive diffractive in-coupler to transfer, to a second waveguide, a second portion of the light, corresponding to blue light, input at the input region at a second incidence angle range, and green light, input at the input region at a fourth incidence angle range, and red light input at the input region;
using a second transmissive diffractive in-coupler (DG2) of a second waveguide to couple into the second waveguide a first part of the second portion of the light received from the first waveguide corresponding to the blue light received from the first waveguide, and the green light received from the first waveguide; and
using a reflective diffractive in-coupler (DG3) of the second waveguide to couple into the second waveguide a second part of the second portion of the light received from the first waveguide, corresponding to the red light received from the first waveguide.