Quantum well based two-dimensional detector for IR radiation and camera system with such a detector
US6909096B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 2000 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Mar 9, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A quantum well based two-dimensional detector (1) for detecting infrared radiation which receives infrared radiation falling upon its detector surface (1a) at various angles of incidence. The detector comprises a grating arrangement for diffraction of the incident radiation. The arrangement is selected with a grating interval which varies or changes from the central part of the detector. out towards the outer parts of the detector. The variation or change in the grating interval is arranged to retain in the detection diffracted rays of the orders 1 and −1 as active components over the whole detector surface by changing the angle values of the diffracted rays depending upon the angles of incidence of the radiation falling on various parts of the detector surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.