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Proceedings Paper

Theoretical Prediction And Experimental Measurement Of Glare In Infrared Components And Imaging Systems
Author(s): Laurence J. Cox
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Paper Abstract

Experimental measurements of glare in refracting thermal imaging systems are in good agreement with theoretical predictions from ray-tracing, indicating that the primary cause of glare is multiple reflections from the optical surfaces. This is confirmed by measurements of the polar scattering function from blanks of infrared optical materials. Since the publication of this work (1), further measurements on diamond-turned Germanium blanks have shown a scattering level for some samples, which is as low as the best polished Germanium. Also recent measurements on Zinc Selenide, using an almost identical experimental arrangement (2), have provided supporting evidence that the scattering from this material at 10.6 microns includes a component from the volume as well as from the surfaces of the material.

Paper Details

Date Published: 29 October 1981
PDF: 1 pages
Proc. SPIE 0274, Assessment of Imaging Systems II, (29 October 1981); doi: 10.1117/12.931864
Show Author Affiliations
Laurence J. Cox, Sira Institute Limited (United Kingdom)

Published in SPIE Proceedings Vol. 0274:
Assessment of Imaging Systems II
Thomas L. Williams, Editor(s)

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