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Proceedings Paper

MICROCARD: a micro-camera based on a circular diffraction grating for MWIR and LWIR imagery
Author(s): Guillaume Druart; Nicolas Guérineau; Michel Tauvy; Sylvain Rommeluère; Jérôme Primot; Joël Deschamps; Manuel Fendler; Jean-Charles Cigna; Jean Taboury
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Paper Abstract

Circular diffraction gratings (also called diffractive axicons) are optical components producing achromatic non-diffracting beams. They thus produce a focal line rather than a focal point for classical lenses. We have recently shown in the visible spectral range that this property can be used to design a simple imaging system with a long depth of focus and a linear variable zoom by using and translating a diffractive axicon as the only component. We have then adapted this principle for the mid-wavelength infrared (MWIR) spectral range and the long-wavelength infrared (LWIR) spectral range. A LWIR low-cost micro-camera, called MICROCARD, has been designed and realized. First images from this camera will be shown. Moreover a way to design a compact MWIR micro-camera with moveable parts integrated directly into the cryostat will be presented.

Paper Details

Date Published: 27 September 2008
PDF: 8 pages
Proc. SPIE 7100, Optical Design and Engineering III, 71001N (27 September 2008); doi: 10.1117/12.797446
Show Author Affiliations
Guillaume Druart, ONERA (France)
Nicolas Guérineau, ONERA (France)
Michel Tauvy, ONERA (France)
Sylvain Rommeluère, ONERA (France)
Jérôme Primot, ONERA (France)
Joël Deschamps, ONERA (France)
Manuel Fendler, CEA-LETI/Minatec (France)
Jean-Charles Cigna, CEA-LETI/Minatec (France)
Jean Taboury, Institut d'Optique (France)

Published in SPIE Proceedings Vol. 7100:
Optical Design and Engineering III
Laurent Mazuray; Jean-Luc Tissot; Jeffrey M. Raynor; Rolf Wartmann; Andrew Wood, Editor(s)

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