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Proceedings Paper

Passive thermal imaging of bullets in flight
Author(s): Austin A. Richards; David M. Risdall
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Paper Abstract

An ultra-low-noise readout IC originally designed for low-background imaging when hybridized with indium gallium arsenide (InGaAs) detectors has been combined with indium antimonide (InSb) detectors instead. This novel focal plane array operates in the 3-5 micron waveband and is capable of imaging the very low backgrounds encountered at extremely short exposure or integration times. Combining the FPA with specialized support electronics that enable precision triggering has resulted in a commercially-available camera system that can take stop-motion thermal images of explosions, supersonic bullets and other fast projectiles without the need for rotating mirrors or other optomechanical assemblies that are required in a scanning or streak camera system. The camera system can be easily calibrated to measure the in-band radiance of these objects, as well as enabling estimates of their surface temperature based on laboratory measurements of emissivity.

Paper Details

Date Published: 12 April 2004
PDF: 6 pages
Proc. SPIE 5405, Thermosense XXVI, (12 April 2004); doi: 10.1117/12.547406
Show Author Affiliations
Austin A. Richards, Indigo Systems Corp. (United States)
David M. Risdall, Indigo Systems Corp. (United States)


Published in SPIE Proceedings Vol. 5405:
Thermosense XXVI
Douglas D. Burleigh; K. Elliott Cramer; G. Raymond Peacock, Editor(s)

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