Metasurfaces for laser speckle reduction
US12140778B2 · kind B2 · utility
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159References
9Claims
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Key dates
| Filing date | Jul 2, 2019 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Oct 19, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4087
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus that relies on patterned metasurfaces to reduce speckle when illuminating an object with coherent light. The metasurfaces serve to increase one or more of angle diversity and wavelength diversity resulting from illumination by a coherent source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.