Détecteurs microbolomètres 1024 x 768 au pas de 17 µm et technologie TEC-LESS
De Wiki-thermographie.
par Cyril TROUILLEAU
For more than 10 years now, uncooled sensors have given new opportunities in the IR field of applications by being able to be produce in large volume. Compared to cooled technology, uncooled detectors offer many interesting advantages: high reliability, lower cost … whereas the performance is high enough for a lot of applications. Thermography, building inspection, enhanced driver vision and military (thermal weapon sight, low altitude UAV sensor) are applications which can be provided with affordable IR focal plane arrays…. The high level of accumulated expertise by ULIS and CEA/LETI on uncooled microbolometers made from amorphous silicon enables ULIS to develop 1024 x 768 (XGA) IRFPA formats with 17µm pixel-pitch to address high end, high performance applications. The reduction of the pixel-pitch turns this XGA array into a product well adapted for high resolution yet compact systems. This detector, while keeping all the performances and all the innovations developed on previous ULIS ROIC (NETD performance, detector configuration by serial link, low power consumption and wide electrical dynamic range …), can be operated on a wide range of ambient temperature, with constant settings. This new XGA detector is fully described in this paper. The second is dedicated to the ULIS detectors TEC-less capability.
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