US 11,754,870 B2
Liquid crystal polarization hologram device comprising an optic axis with a spatially varying orientation and compensated wavy structures
Junren Wang, Kirkland, WA (US); Yuge Huang, Oviedo, FL (US); Yun-Han Lee, Redmond, WA (US); and Lu Lu, Kirkland, WA (US)
Assigned to META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Sep. 13, 2022, as Appl. No. 17/944,183.
Claims priority of provisional application 63/276,793, filed on Nov. 8, 2021.
Prior Publication US 2023/0144920 A1, May 11, 2023
Int. Cl. G02F 1/1334 (2006.01); G02F 1/1337 (2006.01); G02F 1/13363 (2006.01)
CPC G02F 1/13342 (2013.01) [G02F 1/13363 (2013.01); G02F 1/133707 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device, comprising:
a polarization hologram polymer layer having a wavy surface, an optic axis of the polarization hologram polymer layer being configured with a spatially varying orientation in a first predetermined in-plane direction; and
a compensation layer disposed at the wavy surface of the polarization hologram polymer layer and configured to compensate for the wavy surface in shape.