Macro-scale features for optically black surfaces and straylight suppression
US11209577B2 · kind B2 · utility
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6References
22Claims
0Family size
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Key dates
| Filing date | May 30, 2019 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Apr 7, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/118
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Improved optically absorptive surfaces as well as surfaces and structures exhibiting reduced or minimized optical scattering or reflection, including an improved optically black surface that can be used for stray light suppression having macroscopic repetitive features with multiple facets and/or curved faces that direct near specular rays and scattered rays from one feature element to neighboring elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.