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Proceedings Paper

Optical design of a dual-magnification infrared telescope whose outer element is an integral part of a pressure vessel
Author(s): Colin A. Leming
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Paper Abstract

A folded dual magnification telescope, operating in the 8-12 micron waveband, has been designed to be incorporated in a pressure resistant housing sealed with a spherical profile pressure window. A single element is located immediately behind the window and is aspherised to control the aberrations generated by the window. An additional aspheric element is incorporated in a two lens turret which is switched in to provide low magnification. The trade-offs between control of aberrations, cold reflections and mechanical considerations are discussed together with details of tolerancing and manufacturing requiitments.

Paper Details

Date Published: 1 October 1990
PDF: 5 pages
Proc. SPIE 1320, Infrared Technology and Applications, (1 October 1990); doi: 10.1117/12.22345
Show Author Affiliations
Colin A. Leming, British Aerospace (Dynamics) L (United Kingdom)

Published in SPIE Proceedings Vol. 1320:
Infrared Technology and Applications
Alan H. Lettington, Editor(s)

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