US 12,352,960 B2
Waveguide architectures and related methods of manufacturing
Jonathan David Waldern, Diablo, CA (US); Milan Momcilo Popovich, Leicester (GB); and Alastair John Grant, San Jose, CA (US)
Assigned to DigiLens Inc., Sunnyvale, CA (US)
Filed by DigiLens Inc., Sunnyvale, CA (US)
Filed on Oct. 5, 2023, as Appl. No. 18/481,943.
Application 18/481,943 is a continuation of application No. 17/167,903, filed on Feb. 4, 2021, abandoned.
Application 17/167,903 is a continuation of application No. 16/242,979, filed on Jan. 8, 2019, granted, now 10,914,950, issued on Feb. 9, 2021.
Claims priority of provisional application 62/614,947, filed on Jan. 8, 2018.
Claims priority of provisional application 62/614,949, filed on Jan. 8, 2018.
Claims priority of provisional application 62/615,000, filed on Jan. 8, 2018.
Prior Publication US 2024/0302656 A1, Sep. 12, 2024
Int. Cl. G02B 27/01 (2006.01); B60K 35/00 (2024.01); B60K 35/65 (2024.01); F21V 8/00 (2006.01)
CPC G02B 27/0103 (2013.01) [G02B 6/0026 (2013.01); G02B 6/005 (2013.01); G02B 6/0065 (2013.01); G02B 27/0101 (2013.01); G02B 27/0179 (2013.01); B60K 35/00 (2013.01); B60K 35/654 (2024.01); B60K 2360/334 (2024.01); G02B 2027/011 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0125 (2013.01); G02B 2027/0132 (2013.01); G02B 2027/0187 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A waveguide display comprising:
a waveguide comprising a holographic polymer dispersed liquid crystal mixture (HPDLC) layer sandwiched between first and second transparent substrates, wherein the HPDLC layer comprises:
an input grating;
a fold grating; and
an output grating; and
an input image node optically coupled to the waveguide;
wherein:
the input grating is configured to receive light from the input image node and to cause the light to travel within the waveguide via total internal reflection to the fold grating;
the fold grating is configured to direct the light towards the output grating;
the output grating is configured to cause the light to exit the waveguide; and
wherein at least one of the input grating and the output grating is a multiplexed grating;
wherein the multiplexed gratings provided by at least one of the input grating and the output grating is configured to increase the field of view of the waveguide display by providing a first waveguide path for light forming a first portion of the field of view and a second waveguide path for light forming a second portion of the field of view; and
wherein the input and output gratings each multiplex first and second gratings, wherein a second fold grating is provided, wherein the first grating multiplexed into the input grating, the fold grating and the first grating multiplexed into the output grating together provide a first wavequide path for in-coupling, beam expanding and extracting a first field of view portion, wherein the second grating multiplexed into the input grating, the second fold grating and the second grating multiplexed into the output grating together provide a second waveguide path for in-coupling, beam expanding, and extracting a second field of view portion.