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Proceedings Paper

Design and performance of 256x256 bolometer-type uncooled infrared detector
Author(s): Hideo Wada; Mitsuhiro Nagashima; Naoki Oda; Tokuhito Sasaki; Akihiro Kawahara; Masayuki Kanzaki; Yoshio Tsuruta; Tohru Mori; Shouhei Matsumoto; Takeshi Shima; Minoru Hijikawa; Nanao Tsukamoto; Hideki Gotoh
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Paper Abstract

This paper discusses the design and performance of a 256 X 256 bolometer-type uncooled infrared detector. First, model calculations are carried out to clarify the relations of the noise equivalent temperature difference (NETD) to the electrical properties of the bolometer material. The properties are mainly resistivity, the temperature coefficient of resistance (TCR) and 1/f noise. To obtain real-time images with NETD values smaller than 0.15 K for F/1 optics, vanadium oxide thin film was developed as the bolometer material, having a sheet resistance range of 5 - 50 k(Omega) /square and a TCR value of -2%/K. This material did not exhibit thermochroism like VO2(A), because it was identified as VO2(B). The bolometer-array was statistically evaluated and put into the infrared camera. Finally, a thermal image with a NETD of 0.15 K was obtained.

Paper Details

Date Published: 22 July 1998
PDF: 11 pages
Proc. SPIE 3379, Infrared Detectors and Focal Plane Arrays V, (22 July 1998); doi: 10.1117/12.317635
Show Author Affiliations
Hideo Wada, Japan Defense Agency (Japan)
Mitsuhiro Nagashima, Japan Defense Agency (Japan)
Naoki Oda, NEC Corp. (Japan)
Tokuhito Sasaki, NEC Corp. (Japan)
Akihiro Kawahara, NEC Corp. (Japan)
Masayuki Kanzaki, NEC Corp. (Japan)
Yoshio Tsuruta, NEC Corp. (Japan)
Tohru Mori, NEC Corp. (Japan)
Shouhei Matsumoto, NEC Corp. (Japan)
Takeshi Shima, NEC Corp. (Japan)
Minoru Hijikawa, NEC Corp. (Japan)
Nanao Tsukamoto, NEC Aerospace Systems (Japan)
Hideki Gotoh, NEC Glass Components, Ltd. (Japan)

Published in SPIE Proceedings Vol. 3379:
Infrared Detectors and Focal Plane Arrays V
Eustace L. Dereniak; Robert E. Sampson, Editor(s)

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