Optical design of a dual-magnification infrared telescope whose outer element is an integral part of a pressure vessel

Colin A. Leming

doi:10.1117/12.22345

1 October 1990 Optical design of a dual-magnification infrared telescope whose outer element is an integral part of a pressure vessel

Colin A. Leming

Author Affiliations +

Proceedings Volume 1320, Infrared Technology and Applications; (1990) https://doi.org/10.1117/12.22345
Event: Eighth International Conference Infrared Technology and Applications, 1990, London, United Kingdom

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.

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Colin A. Leming "Optical design of a dual-magnification infrared telescope whose outer element is an integral part of a pressure vessel", Proc. SPIE 1320, Infrared Technology and Applications, (1 October 1990); https://doi.org/10.1117/12.22345

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