Theoretical Prediction And Experimental Measurement Of Glare In Infrared Components And Imaging Systems

Laurence J. Cox

doi:10.1117/12.931864

29 October 1981 Theoretical Prediction And Experimental Measurement Of Glare In Infrared Components And Imaging Systems

Laurence J. Cox

Proceedings Volume 0274, Assessment of Imaging Systems II; (1981) https://doi.org/10.1117/12.931864
Event: Assessment of Imaging Systems: Visible and Infrared, 1981, Reading, United Kingdom

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.

Citation Download Citation

Laurence J. Cox "Theoretical Prediction And Experimental Measurement Of Glare In Infrared Components And Imaging Systems", Proc. SPIE 0274, Assessment of Imaging Systems II, (29 October 1981); https://doi.org/10.1117/12.931864

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