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Proceedings Paper

No such thing as sigma: flowdown and measurement of surface roughness requirements
Author(s): Michael G. Dittman; Frank Grochocki; Kathleen Youngworth
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Paper Abstract

The standard use of the parameter σ for the rms surface roughness of optics has obscured the fact that the effective surface roughness is a function of both the measurement wavelength and bandwidth. A more appropriate method for the flowdown of surface specifications from stray light requirements is presented. Acceptance test methods for validating surface properties of optics using a Zygo NewView Profilometer are also discussed.

Paper Details

Date Published: 7 September 2006
PDF: 8 pages
Proc. SPIE 6291, Optical Systems Degradation, Contamination, and Stray Light: Effects, Measurements, and Control II, 62910P (7 September 2006); doi: 10.1117/12.678314
Show Author Affiliations
Michael G. Dittman, Ball Aerospace & Technologies Corp. (United States)
Frank Grochocki, Ball Aerospace & Technologies Corp. (United States)
Kathleen Youngworth, Ball Aerospace & Technologies Corp. (United States)


Published in SPIE Proceedings Vol. 6291:
Optical Systems Degradation, Contamination, and Stray Light: Effects, Measurements, and Control II
O. Manuel Uy; John C. Fleming; Michael G. Dittman, Editor(s)

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