High-sensitivity infrared detector and an infrared camera using such a detector

摘要

A high-sensity infrared detector system includes circuitry for summing the luminance values of flux received by the photosensitive cells in a detection matrix, these values being read in succession by a CCD read circuit at a frame rate and then converted to select adding operations applied to match the characteristics of a detector scan. An accumulator consists of an integrator having a multiplier connected to a memory containing sets of coefficients, each coefficient having two possible values and each value indicating a type of addition-with or without a cell shift. Secondly, an accumulator is provided to sum the luminance values following a defined scheme. A scanning system outputs data concerning the scan characteristics to detector selection circuits to select a set of coefficients from memory.