Stability Of Aberrations With Temperature In Fast Thermal Imaging Zoom Telescopes

R. C. Simmons; P. A. Blaine

doi:10.1117/12.945556

11 October 1988 Stability Of Aberrations With Temperature In Fast Thermal Imaging Zoom Telescopes

R. C. Simmons, P. A. Blaine

Proceedings Volume 0916, Infrared Systems--Design and Testing; (1988) https://doi.org/10.1117/12.945556
Event: Sira/SPIE Infrared Meeting, 1988, London, United Kingdom

Abstract

An important requirement for many optical systems, is stability of performance over a relatively large temperature range. The method by which this is best achieved varies from case to case. Generally, the techniques involved are referred to as athermalisation. In this paper, as an example of an athermalisation problem, the approach adopted for the stabilisation of an infrared zoom objective will be indicated. The mechanism devised for introducing the adjustments will also be described. The objective was designed for use in the 8.0 micron to 13.0 micron band, with an operating temperature range in excess of 130 degrees C. It employs Germanium and Zinc selenide refracting elements.

Citation Download Citation

R. C. Simmons and P. A. Blaine "Stability Of Aberrations With Temperature In Fast Thermal Imaging Zoom Telescopes", Proc. SPIE 0916, Infrared Systems--Design and Testing, (11 October 1988); https://doi.org/10.1117/12.945556

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