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Proceedings Paper

Development of an infrared ultra-compact multichannel camera integrated in a SOFRADIR's detector Dewar cooler assembly
Author(s): F. de la Barrière; G. Druart; N. Guérineau; M. Chambon; A. Plyer; G. Lasfargues; E. de Borniol; S. Magli
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Paper Abstract

We present a prototype of an infrared cryogenic camera directly integrated inside an off-the-shelf SOFRADIR's Detector Dewar Cooler Assembly (DDCA) and whose field of view is equal to 120°. Based on the co-design principle between optical design and image processing, we have designed a multichannel camera which produces four non-redundant images on a single SCORPIO detector, with 640 × 512 pixels and a pixel pitch of 15 μm. This leads to an ultra-miniaturized optical system with a very low additional optical and mechanical mass to be cooled. By this way, the cool-down time of the camera is comparable to the one of an equivalent DDCA without an imagery function. Indeed, we obtain a cool-down time of 6 minutes with a THALES Cryogenics RM3. With a superresolution algorithm, the four images produced by the camera are combined to process a single full-resolution image with an equivalent sampling pitch equal to 7.5μm. The performances of this camera, assessed by experimental characterizations, are presented.

Paper Details

Date Published: 26 May 2015
PDF: 10 pages
Proc. SPIE 9451, Infrared Technology and Applications XLI, 94510E (26 May 2015); doi: 10.1117/12.2177065
Show Author Affiliations
F. de la Barrière, ONERA (France)
G. Druart, ONERA (France)
N. Guérineau, ONERA (France)
M. Chambon, ONERA (France)
A. Plyer, ONERA (France)
G. Lasfargues, CEA LETI (France)
E. de Borniol, CEA LETI (France)
S. Magli, SOFRADIR (France)

Published in SPIE Proceedings Vol. 9451:
Infrared Technology and Applications XLI
Bjørn F. Andresen; Gabor F. Fulop; Charles M. Hanson; Paul R. Norton, Editor(s)

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