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Optical Engineering

Multiphase fringe analysis with unknown phase shifts
Author(s): Gordon D. Lassahn; Jeffrey Karl Lassahn; Paul Taylor; Vance A. Deason
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Paper Abstract

We present methods for determining the phase shifts in multiphase fringe analysis from the fringe image data itself, thus eliminating the requirement for prior knowledge or accurate control of the phase shifts. We also discuss methods for calculating the folded (wrapped) and unfolded phases, and quote the accuracy of the fringe analysis method for an example in which the correct result is known.

Paper Details

Date Published: 1 June 1994
PDF: 6 pages
Opt. Eng. 33(6) doi: 10.1117/12.169728
Published in: Optical Engineering Volume 33, Issue 6
Show Author Affiliations
Gordon D. Lassahn, EG&G Idaho, Inc. (United States)
Jeffrey Karl Lassahn
Paul Taylor
Vance A. Deason, EG&G Idaho, Inc. (United States)

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