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Optical Engineering

White-Light Optical Processing Of Misfocused Speckle Interferograms
Author(s): F. T. S. Yu; P. H. Ruterbusch; G. Gheen; Grant Gerhart
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Paper Abstract

A technique of white-light color encoding of misfocused speckle interferometric fringe patterns is presented. The encoding is performed in the spatial frequency plane with color filters. This technique allows the viewing of a multiset of encoded speckle interferograms simultaneously. Thus, it may provide new informational interferometric aspects of the object under stress or vibration. The effect on the speckle fringe pattern due to the spatial filtering is briefly discussed, and experimental demonstrations of color encoded fringe patterns are presented. Due to the simplicity and versatility of the processing technique, we feel that the technique may develop into a practical tool for strain, stress, and vibrational measurement.

Paper Details

Date Published: 1 February 1983
PDF: 5 pages
Opt. Eng. 22(1) 221156 doi: 10.1117/12.7973066
Published in: Optical Engineering Volume 22, Issue 1
Show Author Affiliations
F. T. S. Yu, The Pennsylvania State University (United States)
P. H. Ruterbusch, The Pennsylvania State University (United States)
G. Gheen, The Pennsylvania State University (United States)
Grant Gerhart, U.S. Army Tank Automotive R&D Command (United States)

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