Passive thermal imaging of bullets in flight

Austin A. Richards; David M. Risdall

doi:10.1117/12.547406

12 April 2004 Passive thermal imaging of bullets in flight

Austin A. Richards, David M. Risdall

Proceedings Volume 5405, Thermosense XXVI; (2004) https://doi.org/10.1117/12.547406
Event: Defense and Security, 2004, Orlando, Florida, United States

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.

Citation Download Citation

Austin A. Richards and David M. Risdall "Passive thermal imaging of bullets in flight", Proc. SPIE 5405, Thermosense XXVI, (12 April 2004); https://doi.org/10.1117/12.547406

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