Optronic window transparent to IR and reflecting RF
US9012788B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Nov 15, 2011 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Jun 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/121
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optronic porthole comprises a substrate with two faces. It comprises on one of the faces of the substrate or on both faces, a stack of several hetero-structures, each hetero-structure being composed of at least two semi-conducting layers SC1, SC2, the layer SC1 being doped, the layer SC2 itself comprising a two-dimensional electron gas layer formed at the interface with the layer SC1. It furthermore comprises an electrode in contact with all the electron gas layers, a bi-periodic metallic grid buried in the stack, in contact with the electrode. The substrate and the layers are transparent in the 0.4 μm-5 μm band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.