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27 June 1996 Performance of new handheld IR camera using uncooled bolometer FPA
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A camera using an uncooled infrared image sensor has been developed. This image sensor is a bolometer focal plane array (FPA), of which the readout circuit is designed to minimize the temperature drift or the pattern noise caused by the changes of the ambient temperature. The circuit has a bolometer for the load resistor, which has the same temperature coefficient of resistance as that of the pixel bolometer. Therefore the signal change induced by the temperature change of the FPA substrate is reduced because the resistance change of the load bolometer compensates for that of the pixel bolometer. The effectiveness of the drift- compensating circuit has been confirmed with a prototype handheld camera.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Takanori Sone, Norio Ohkawa, Yasuo Kawashima, Yasuji Matsui, Yosuke Sugiura, Tomiharu Araki, Makoto Kamozawa, Masashi Ueno, Osamu Kaneda, Tomohiro Ishikawa, Hisatoshi Hata, Kazuo Hashima, Yoshiyuki Nakagi, Akira Yamada, and Masafumi Kimata "Performance of new handheld IR camera using uncooled bolometer FPA", Proc. SPIE 2744, Infrared Technology and Applications XXII, (27 June 1996);

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