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Power Spectrum Standard for Surface Roughness

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Abstract

The typical lens or mirror requirement to control surface roughness is Rq (Geometric Average Roughness, Root-Mean-Square Roughness, RMS Roughness, etc.). It has been reviewed and found to have several serious flaws. These flaws result from the concept that requirements placed on an optical element should not be arbitrary but be based on form, fit or function and be complete.

© 1988 Optical Society of America

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