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US 2023/0144920 A1Published application
Liquid crystal polarization hologram device with compensated wavy structures
AssigneeMeta Platforms Technologies, LLC
InventorsJunren WANG, Yuge HUANG, Yun-Han LEE, Lu LU
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Abstract
A device is provided. The device includes 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. The device also includes a compensation layer disposed at the wavy surface of the polarization hologram polymer layer and configured to compensate for the wavy surface in shape.
Claims20
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.
A method, comprising:
- providing a polarization hologram polymer layer having a wavy surface and an optic axis configured with a spatially varying orientation in a first predetermined in-plane direction;
- and
- forming a compensation layer over the wavy surface of the polarization hologram polymer layer to compensate for the wavy surface in shape.
A method, comprising:
- determining one or more relationships between an average height of a wavy surface of a testing polarization hologram polymer layer and one or more polymerization parameters, the testing polarization hologram polymer layer having an optic axis configured with a spatially varying orientation in a first predetermined in-plane direction;
- determining one or more values of the one or more polymerization parameters that render the average height of the wavy surface of the testing polarization hologram polymer layer to be a predetermined average height;
- and
- fabricating a final polarization hologram polymer layer using a polymerization process based on the determined one or more values of the one or more polymerization parameters, the fabricated final polarization hologram polymer layer having a wavy surface with the predetermined average height.
1 more element
Dependencies are inferred from the claim text.