Room-temperature filtering for passive infrared imaging
US9291506B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2011 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Aug 31, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/0077
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device, for imaging a scene, includes a detector of the radiation that includes a plurality of detector elements, a circularly variable filter, a mechanism for rotating the filter perpendicular to the optical path of the radiation from the scene to the detector, and a data capture apparatus. All the detector elements are repeatedly interrogated by as a group as the filter rotates, to acquire images of the scene, each of which includes a plurality of image portions in respective spectral bands of the filter. The image portions are assembled to form processed images, each of which depicts the scene in a single respective spectral band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.