6 April 1993 Comparison of scanning and focal-plane-array cameras for IR thermal wave imaging
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Thermal wave imaging (TWI) has typically relied upon HgCdTe optomechanical scanning radiometers in the 8 - 12 micrometers spectral range for image acquisition. However, recent improvements in manufacturing technology, spatial resolution, and device efficiency make PtSi and InSb focal plane array (FPA) cameras an attractive alternative in the 2 - 5 micrometers spectral range. We have compared the performance of off-the-shelf imagers of both scanning HgCdTe, and PtSi and InSb FPA types, in typical TWI applications, such as boxcar image processing of plastics and metals. The relative merits of detecting transient surface temperature variations in the 2 - 5 and 8 - 12 micrometers bands are discussed.
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Steven M. Shepard, Steven M. Shepard, Tasdiq Ahmed, Tasdiq Ahmed, Lawrence D. Favro, Lawrence D. Favro, Robert L. Thomas, Robert L. Thomas, Pao-Kuang Kuo, Pao-Kuang Kuo, } "Comparison of scanning and focal-plane-array cameras for IR thermal wave imaging", Proc. SPIE 1933, Thermosense XV: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (6 April 1993); doi: 10.1117/12.141961; https://doi.org/10.1117/12.141961

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