Infrared radiation detection device
US6791085B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2001 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Aug 3, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device for generating an image from an IR radiation including a plurality of polarized heat detectors (2) having specific electric resistances distributed over the focal plane of a detection module so as to deliver a signal representing a detected IR radiation. A read module (8) converts the electric signal into a signal usable by an image processing block (18). An electric signal compensation module (10) having a first branch (12) for obtaining a first thresholding to extract a first constant value signal due to the polarization of the heat detectors. The compensation module (10) includes a second branch (30) for obtaining a second thresholding to extract from the first thresholding signal a second low-level signal due to the dispersion of the electric resistances of the heat detectors and/or to the fluctuations in the temperature of the focal plane of the detection module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.