Polarization-agnostic optical dimming device and optical assembly including the same
US11281031B1 · kind B1 · utility
1Cited by
1References
20Claims
0Family size
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Key dates
| Filing date | Feb 14, 2020 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Sep 16, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1347
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical dimming device includes at least one polarization rotator configured to switch a polarization of a linearly polarized component of an incoming light between two orthogonal polarizations. The optical dimming device also includes at least one polarizer coupled with the at least one polarization rotator, and configured to output a light having a light intensity reduced to a predetermined percentage of an initial light intensity of the incoming light. The predetermined percentage is substantially the same for different incoming lights having different initial polarizations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.