US 11,747,568 B2
Waveguides incorporating transmissive and reflective gratings and related methods of manufacturing
Jonathan David Waldern, Los Altos Hills, CA (US); Alastair John Grant, San Jose, CA (US); Hyesog Lee, Sunnyvale, CA (US); Gerald Buxton, Sunnyvale, CA (US); and Milan Momcilo Popovich, Leicester (GB)
Assigned to DigiLens Inc., Sunnyvale, CA (US)
Filed by DigiLens Inc., Sunnyvale, CA (US)
Filed on Aug. 24, 2021, as Appl. No. 17/410,828.
Application 17/410,828 is a continuation of application No. 16/895,856, filed on Jun. 8, 2020, abandoned.
Claims priority of provisional application 62/858,928, filed on Jun. 7, 2019.
Prior Publication US 2022/0099898 A1, Mar. 31, 2022
Int. Cl. G02B 6/35 (2006.01); F21V 8/00 (2006.01); G02B 6/02 (2006.01); G02B 27/00 (2006.01)
CPC G02B 6/3522 (2013.01) [G02B 6/0016 (2013.01); G02B 6/02076 (2013.01); G02B 6/02276 (2013.01); G02B 27/0081 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A waveguide display, comprising:
a source of light modulated with an image data; and
a waveguide comprising:
at least one transmission grating;
at least one reflection grating, wherein said at least one reflection grating and said at least one transmission grating at least partially overlap;
at least one input coupler for coupling light from said source of light into a total internal reflection (TIR) path in said waveguide towards the at least partially overlapping at least one transmission grating and at least one reflection grating; and
at least one output coupler, wherein the at least partially overlapping at least one transmission grating and at least one reflection grating are configured to redirect the light to the at least one output coupler which is configured to output the light.