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Proceedings Paper

High frame rate imaging using uncooled optical readout photomechanical IR sensor
Author(s): Jack P. Salerno
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Paper Abstract

Agiltron has produced a 280x240 photomechanical sensor array with an optical readout incorporating visible light cameras for both MWIR and LWIR imaging at speeds up to 1,000 frames per second. The photomechanical sensor is essentially a transducer that converts the image-induced temperature change into a mechanical deflection actuated by a micro-cantilevered beam. This defection is measured by an optical readout and converted into an electronic image. The photomechanical sensor requires no external drive for operation and therefore creates no bottleneck for readout data rate. It operates uncooled at widely varying ambient temperature. The use of off-the-shelf high speed visible light sensors allows for high frame rate imaging with no need for custom electronics or ROIC. Results on detection of rapid occurrence events, such as gunfire and rocket travel, are reported. The influence of detector sensitivity and time constant on the experimental imaging is discussed. Analysis of the frequency response of the photomechanical sensor is presented.

Paper Details

Date Published: 14 May 2007
PDF: 9 pages
Proc. SPIE 6542, Infrared Technology and Applications XXXIII, 65421D (14 May 2007); doi: 10.1117/12.718785
Show Author Affiliations
Jack P. Salerno, Agiltron, Inc. (United States)


Published in SPIE Proceedings Vol. 6542:
Infrared Technology and Applications XXXIII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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