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Proceedings Paper

Two-band infrared thermographer for standoff temperature measurements
Author(s): Julia R. Dupuis; David Mansur; Robert Vaillancourt; David Carlson; Elizabeth Schundler; George Genetti
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Paper Abstract

OPTRA presents a new approach to remote infrared temperature measurements over mid to long standoff ranges in varying atmospheric conditions. The sensor is intended as a feedback mechanism for use with the Active Denial System to insure the target's skin temperature is within a safe range. OPTRA's sensor employs a small reflector telescope followed by a series of interference filters which form spatially identical but spectrally separated images on two miniature uncooled microbolometer focal plane arrays. On a pixel by pixel basis, we algebraically combine and normalize the two images. By carefully selecting the spectral passbands of the two images, the mathematical process yields a result that is substantially free of errors caused by humidity, rain, light fog, and atmospheric carbon dioxide. The package measures six x six x 18-inches and weighs six lbs. The package includes an on-axis miniature visible imager, and the graphical user interface presents a fused visible/infrared image with user-defined transparency levels. The visible/infrared combination provides good spatial resolution at large distances and ease of pointing along with the accurate temperature measurement across the field of view.

Paper Details

Date Published: 26 May 2006
PDF: 10 pages
Proc. SPIE 6219, Enabling Technologies and Design of Nonlethal Weapons, 62190E (26 May 2006); doi: 10.1117/12.666030
Show Author Affiliations
Julia R. Dupuis, Optra, Inc. (United States)
David Mansur, Optra, Inc. (United States)
Robert Vaillancourt, Optra, Inc. (United States)
David Carlson, Optra, Inc. (United States)
Elizabeth Schundler, Optra, Inc. (United States)
George Genetti, Optra, Inc. (United States)

Published in SPIE Proceedings Vol. 6219:
Enabling Technologies and Design of Nonlethal Weapons
Glenn T. Shwaery; John G. Blitch; Carlton Land, Editor(s)

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