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Proceedings Paper

Comparison Of Four Methods Of Interferogram Reduction And Interpretation
Author(s): Gregg Woodfin; Michael Feind
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Paper Abstract

This paper will address the problem of accurate reduction and interpretation of interferograms. Peak-to-valley wavefront deformation will be the main criterion of evaluation. Interferograms containing power, spherical aberration, coma, and astigmatism will be evaluated using four different methods. These methods will be 1) visual interpretation using a "harp," 2) manual interpretation, 3) automatic digitization (Zygo Zapp), and 4) computer interpretation (fringe). The strengths and weaknesses of these methods, including cost, time, accuracy, and repeatability, will be discussed. Reference will be made to "Optical Interferograms-Reduction and Interpretation" an ASTM publication.

Paper Details

Date Published: 20 November 1985
PDF: 7 pages
Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); doi: 10.1117/12.976093
Show Author Affiliations
Gregg Woodfin, University of California (United States)
Michael Feind, University of California (United States)

Published in SPIE Proceedings Vol. 0540:
Southwest Conf on Optics '85
Susanne C. Stotlar, Editor(s)

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