Back to results
US 11,754,870 B2Granted
Liquid crystal polarization hologram device comprising an optic axis with a spatially varying orientation and compensated wavy structures
AssigneeMeta Platforms Technologies, LLC
InventorsJunren Wang, Yuge Huang, Yun-Han Lee, Lu Lu
Life of this patent
Estimating the term…
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.