Optical camouflage filter
US11360248B2 · kind B2 · utility
2Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2018 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Nov 25, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Systems including one or both of a light emitter or a light receiver and an optical filter adjacent one or both of the light emitter or the light receive are described. The optical filter includes a wavelength selective scattering layer that scatters near-infrared light less than visible light. The wavelength selective scattering layer includes a plurality of particles. The plurality of particles have an imaginary refractive index less than 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.