Optical device based on tunable polarization volume hologram
US11635669B1 · kind B1 · utility
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Key dates
| Filing date | Aug 27, 2020 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Nov 20, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2260/35
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device includes a first substrate and a second substrate. The device also includes a birefringent medium layer disposed between the first substrate and the second substrate. Orientations of directors of optically anisotropic molecules included in the birefringent medium layer varying periodically with an in-plane pitch tunable by an external field to adjust a diffraction angle of a light beam diffracted by the birefringent medium layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.