Method and system for generating substantially uniform speckle patterns
US7180669B2 · kind B2 · utility
0Cited by
3References
16Claims
0Family size
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Key dates
| Filing date | Dec 17, 2004 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Dec 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A diffractive optical element is positioned in an optical path between a coherent light source and a surface. The diffractive optical element is designed to disperse the light across one or more spots on the surface in a manner designed to create speckle patterns having substantially uniform intensities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.