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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 22, Iss. 16 — Aug. 15, 1983
  • pp: 2416–2418

Scatter ratio test for lens surface quality measurement

Paul S. Schmitt, Thomas W. Webb, and E. Harvey Barnett  »View Author Affiliations


Applied Optics, Vol. 22, Issue 16, pp. 2416-2418 (1983)
http://dx.doi.org/10.1364/AO.22.002416


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Abstract

The surface quality of an optical lens can be quantitatively measured using a scatter ratio test. A collimated light beam is focused by the test lens upon an opaque spot. A detector behind the spot measures light scattered past the spot. The spot is then displaced to the side so that total energy out of the lens is measured by the detector. The scatter ratio is the ratio of the two detector outputs. The test is shown to be reproducible and insensitive to operator effects. It is shown to be an effective process control tool for detecting changes in surface finish. The relationship between stylus measurements of lens surface roughness and the scatter ratios is shown.

© 1983 Optical Society of America

History
Original Manuscript: March 9, 1983
Published: August 15, 1983

Citation
Paul S. Schmitt, Thomas W. Webb, and E. Harvey Barnett, "Scatter ratio test for lens surface quality measurement," Appl. Opt. 22, 2416-2418 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-16-2416

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