Comparison Of Four Methods Of Interferogram Reduction And Interpretation

Gregg Woodfin; Michael Feind

doi:10.1117/12.976093

20 November 1985 Comparison Of Four Methods Of Interferogram Reduction And Interpretation

Gregg Woodfin, Michael Feind

Proceedings Volume 0540, Southwest Conf on Optics '85; (1985) https://doi.org/10.1117/12.976093
Event: 1985 Albuquerque Conferences on Optics, 1985, Albuquerque, United States

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.

Citation Download Citation

Gregg Woodfin and Michael Feind "Comparison Of Four Methods Of Interferogram Reduction And Interpretation", Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); https://doi.org/10.1117/12.976093

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