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13 October 2015 Evaluating uniformity of IR reference sources
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Abstract
Infrared reference sources such as blackbodies are used to calibrate and test IR sensors and cameras.. Applications requiring a high thermal uniformity over the emissive surface become more and more frequent compared to the past applications. Among these applications are non uniformity correction of infrared cameras focused at short distance and simultaneous calibration of a set of sensor facing a large area blackbody. Facing these demanding applications requires to accurately measuring thee thermal radiation of each point of the emissive surface of the reference source. The use of an infrared camera for this purpose turns out to be absolutely inefficient since the uniformity off response of this camera is usually worse than the uniformity of thee source to bee measured. Consequently, HGH has developed a testing bench for accurate measurement of uniformity of infrared sources based on a low noise radiometer mounted of translating stages and using an exclusive drift correction method. This bench delivers a reliable thermal map of any kind of infrared reference source.
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Catherine Barrat and Sébastien Violleau "Evaluating uniformity of IR reference sources", Proc. SPIE 9649, Electro-Optical Remote Sensing, Photonic Technologies, and Applications IX, 964907 (13 October 2015); https://doi.org/10.1117/12.2194770
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