Multispectral uncooled thermal infrared camera system
US8466964B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2008 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Aug 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multispectral thermal infrared camera system is disclosed. An uncooled thermal imaging camera is equipped with an axially tilted, cooled spectral filter. The axially tilted, cooled spectral filter deflects the radiation emitted by the uncooled camera away from being reflected back into the camera. The axially tilted, cooled spectral filter emits a lesser amount of thermal radiation towards the camera. And the axially tilted, cooled tilted filter is enclosed in a cold radiation shield to minimize the thermal emission that would be reflected by the filter towards the camera and to absorb the radiation deflected by the tilted filter. The axially tilted, cooled spectral filter passes only the desired portion of the thermal infrared radiation from the scene onto the uncooled camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.