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Proceedings Paper

Scatter Evaluation Of Supersmooth Surface
Author(s): Robert M. Silva; Fred D. Orazio Jr.; W. Kent Stowell
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Paper Abstract

The general term for optical surfaces better than the lowest level of the scratch-dig standards has become "supersmooth", and is seen in technical literature as well as in advertising pieces. A performance number, such as BRDF, which can be measured from the uncoated optical surface by equipment such as the Variable Angle Scatterometer at the Air Force Wright Aeronautical Laborataories at Wright-Patterson Air Force Base is proposed as a method of generating better optical surface specifications. Data show that surfaces of average BRDF values near 10 parts per billion per steradian (0.010 PPM/Sr) for β-βo = 0.5, are now possible and measurable.

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: 10.1117/12.934931
Show Author Affiliations
Robert M. Silva, VTI, Inc. (United States)
Fred D. Orazio Jr., VTI, Inc. (United States)
W. Kent Stowell, AFWAL/AADO-2 (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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