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Proceedings Paper

Using new optical materials and DOE in low-cost lenses for uncooled IR cameras
Author(s): Jean-Marie Bacchus
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Paper Abstract

Angénieux recently developed a low cost 100 mm F/1.25 lens for uncooled IR cameras. It is made of only 2 elements, thanks to the use of GASIR glass (Umicore product) and a diffractive surface. With regard to its equivalent in germanium, it offers similar performances, for a much lower cost due to the price of the optical material, molding, and no need for athermalisation. This lens can be used with new light-weighted night vision goggle ELVIR developed by Thales-Angénieux. We plan to also use GASIR in low cost zoom lenses for uncooled cameras. Starting with these examples, we will compare different available optical materials for IR, their characteristics, and respective advantages and drawbacks. We will deduct from it from rules of use for these materials, depending upon the envisaged use, spectral bandwidth and number of items manufactured.

Paper Details

Date Published: 18 February 2004
PDF: 8 pages
Proc. SPIE 5249, Optical Design and Engineering, (18 February 2004); doi: 10.1117/12.512816
Show Author Affiliations
Jean-Marie Bacchus, Thales Angenieux (France)

Published in SPIE Proceedings Vol. 5249:
Optical Design and Engineering
Laurent Mazuray; Philip J. Rogers; Rolf Wartmann, Editor(s)

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