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26 July 1999 Temperature stabilization requirements for unchopped thermal detectors
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Abstract
The temperature stabilization requirements of unchopped thermistor bolometers and thermopile detectors are analyzed. The detector temperature, on which the bolometer output signal depends, is quite sensitive to changes in instrument temperature but relatively insensitive to changes in scene temperature. In contrast, the difference in temperature between detector and substrate, on which the thermopile signal depends, is equally sensitive to changes in instrument and scene temperature. Expressions for these dependencies are derived based on a simplified instrument model. It is shown that for a typical uncooled thermal imager, the temperature stabilization requirements for a bolometer are tow orders of magnitude more stringent than those for a thermopile detector.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marc C. Foote "Temperature stabilization requirements for unchopped thermal detectors", Proc. SPIE 3698, Infrared Technology and Applications XXV, (26 July 1999); https://doi.org/10.1117/12.354536
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