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1 September 1991 High-resolution thermal imager with a field of view of 112 degrees
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Abstract
A thermal imager with a full field of view (FOV) of 112 deg has been developed. An F/1.2 optics with a cold aperture stop and a 512 X 512 element PtSi Schottky-barrier focal plane array (FPA) is used. The influence of internal radiation and ghost images on the performance of the thermal imager has been modeled and analyzed. Experimental results have demonstrated that this imager can be used without saturation even at the ambient temperature above 60 degree(s)C, and the solar radiation incident will not affect image quality significantly. Examples of imagery obtained with high angular resolution less than 4 mrad are also presented. From these results, it has been clarified that the presented models are effective for analyzing the thermal imager performance.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tadashi Matsushita, Hiroshi Suzuki, Satoshi Wakabayashi, and Toru Tajime "High-resolution thermal imager with a field of view of 112 degrees", Proc. SPIE 1488, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing II, (1 September 1991); https://doi.org/10.1117/12.45817
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