Device and method for detecting infrared radiation through a resistive bolometer matrix
US8158942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2010 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Nov 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/76
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device for detecting infrared radiation including a matrix of resistive imaging bolometers above a substrate, a read circuit forming an analog electrical signal constituting an image of the infrared radiation impinging on the matrix, a probe for measuring the temperature of the substrate, an ADC for converting the analogue electrical signals from the read circuit and probe, and a data processing unit for correcting the signal formed by the read circuit according digital values NC(i,j) corresponding to electrical signals from the bolometers exposed to a uniform scene at the measured temperature of the substrate. The data processing unit including a unit for computing the digital values NC(i,j) based on a single set of parameters of a predetermined physical model of the read circuit electrical signals and corresponding to the exposure of the matrix of imaging bolometers to a temperature substantially equal to the measured substrate temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.