US 12,228,839 B2
Stacked gradient-index liquid crystal lens assembly
Eric Stratton, Redmond, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Feb. 21, 2023, as Appl. No. 18/171,964.
Claims priority of provisional application 63/377,575, filed on Sep. 29, 2022.
Prior Publication US 2024/0111201 A1, Apr. 4, 2024
Int. Cl. G02F 1/29 (2006.01); G02B 27/01 (2006.01)
CPC G02F 1/294 (2021.01) [G02B 27/0172 (2013.01); G02B 2027/0178 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
a lens stack comprising:
a first gradient-index liquid crystal lens comprising a first layer of masks; and
a second gradient-index liquid crystal lens in tandem with the first gradient-index liquid crystal lens, and comprising a second layer of masks,
wherein the lens stack is configured to reach a target optical power based on a first optical power of the first gradient-index liquid crystal lens and a second optical power of the second gradient-index liquid crystal lens, and
wherein a difference of mask patterns between the first layer of masks and the second layer of masks is based on the first optical power of the first gradient-index liquid crystal lens and the second optical power of the second gradient-index liquid crystal lens.