Speckle reduction
US11860378B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
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Key dates
| Filing date | Aug 16, 2017 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Aug 16, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/36
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device (100) for speckle reduction, comprising an optical cell (110) and a controller (130). The optical cell (110) comprises a first and second cell wall (121, 122) spaced apart by a gap, and a liquid crystal composition (114) in the gap. The controller (130) is configured to cause fluid turbulence in the liquid crystal composition. The fluid turbulence in the liquid crystal composition (114) results in time varying spatially random scattering of light (102) transmitted through the liquid crystal composition (114). The liquid crystal composition (114) has a chiral nematic phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.