Light control device and illumination device
US11754904B2 · kind B2 · utility
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1References
19Claims
0Family size
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Key dates
| Filing date | Jul 29, 2022 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | Jul 29, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to one embodiment, a light control device comprises a first liquid crystal cell includes a first liquid crystal layer, a second liquid crystal cell includes a second liquid crystal layer, and a third liquid crystal cell includes a third liquid crystal layer. The first liquid crystal layer and the third liquid crystal layer each have a first region that scatters a first polarization component and that transmits a second polarization component. The second liquid crystal layer has a third region that overlaps the first region and converts the second polarization component into the first polarization component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.