Device optical window camouflage
US11525949B2 · kind B2 · utility
0Cited by
4References
24Claims
0Family size
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Key dates
| Filing date | Oct 20, 2016 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Apr 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/17
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An example article may include an optical filter and a multilayer stack adjacent the optical filter. The multilayer stack may include a plurality of layers. Each respective layer of the plurality layers may define a respective window edge of a plurality of window edges. The plurality of window edges may define an optical window configured to transmit light through the optical filter. At least a first respective window edge of the plurality of window edges may be stepped relative to at least a second respective window edge of the plurality of window edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.