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Proceedings Paper

Specular Black Vane Cavities
Author(s): Robert P . Breault
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Paper Abstract

During the design of a stray light suppression system that requires a great amount of stray light attenuation, someone inevitably will ask or consider a specular black coating on the sections where the system is most sensitive. Although the initial attraction is obviously due to the very low large angle scatter, about 100 times lower than a typical diffuse black scatterer, the choice is seldom helpful. The first argument against specular black cavities is the propagating specular beam. Usually this is so obvious a consideration that the designer immediately folds it into consideration. What is seldom considered is the several ways that the near specular paths, which are almost always present, can contribute significantly higher levels of scattered light than diffusely coated surfaces. This paper highlights some of the second level considerations that should be made when specular coatings are to be used.

Paper Details

Date Published: 4 October 1983
PDF: 8 pages
Proc. SPIE 0384, Generation, Measurement and Control of Stray Radiation III, (4 October 1983); doi: 10.1117/12.934948
Show Author Affiliations
Robert P . Breault, Breault Research Organization, Inc. (United States)

Published in SPIE Proceedings Vol. 0384:
Generation, Measurement and Control of Stray Radiation III
Robert P. Breault, Editor(s)

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