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US 2020/0310204 A1Published application
Switchable broadband waveplate
AssigneeFacebook Technologies, LLC
InventorsFenglin PENG, Lu LU, Jacques GOLLIER
Life of this patent
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Abstract
An optical waveplate is provided. The optical waveplate includes a plurality of liquid crystal (“LC”) layers stacked together. At least one of the plurality of LC layers includes LC molecules that are in-plane switchable by an external field to switch the optical waveplate between states of different phase retardances.
Claims20
An optical waveplate, comprising:
- a plurality of liquid crystal (“LC”) layers stacked together,
- wherein at least one of the plurality of LC layers includes LC molecules that are in-plane switchable by an external field to switch the optical waveplate between states of different phase retardances.
An optical lens assembly, comprising:
- an optical lens;
- and
- an optical waveplate coupled with the optical lens,
- wherein optical waveplate includes:
- a plurality of liquid crystal (“LC”) layers stacked together,
- wherein at least one of the plurality of LC layers includes LC molecules that are in-plane switchable by an external field to switch the optical waveplate between states of different phase retardances.
3 more elements
Dependencies are inferred from the claim text.