Device for detecting electromagnetic radiations
AssigneeSociete Francaise de Detecteurs Infrarouges-Sofradir
InventorPatrick Robert
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AssigneeSociete Francaise de Detecteurs Infrarouges-Sofradir
InventorPatrick Robert
Estimating the term…
A device for detecting electromagnetic radiations implements a detection circuit associated with a reading circuit. The detection circuit includes an array of detection pixels, each comprising a thermal detector of biased bolometric type, and delivering an electric current signal representative of detected radiation. The signal undergoes a double baselining, respectively: a global baselining carried out by means of a thermally isolated bolometer, ensuring extraction from the signal, of a first current of constant value inherent to the biasing of the thermal detector, and an adaptive baselining specific to each of the pixels, carried out by a programmable current generator generating a current for subtraction from the current signal, as a function of the dispersion inherent to the pixel considered relative to a reference signal and stored in an associated memory integrated at the level of each of the pixels.
Device for detecting electromagnetic radiations implementing a detection circuit associated with a reading circuit, the detection circuit comprising an array of detection pixels, each of said pixels comprising a thermal detector of biased bolometric type, and delivering an electric current signal representative of detected radiation, said current signal undergoing a double baselining, respectively:
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