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Optical Engineering

Hybrid Holographic Interferometer For Measuring Three-Dimensional Deformations
Author(s): Suazou Nakadate; Nobutaka Magome; Toshio Honda; Jumpei Tsujiuchi
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Paper Abstract

A method for automatically measuring the three-dimensional (3-D) deformations of a diffuse surface is studied, using a real-time holographic interferometer and a television-computer system. The object surface is illuminated from three different directions. The scattered waves are recorded on a thermoplastic hologram. Real-time holographic interference patterns are observed through the hologram in a fixed direction by sequentially applying the three illuminating beams. The three fringe patterns are put into the computer using a television (TV) camera. The relative fringe order numbers are determined over the whole surface. Calculations for obtaining 3-D deformation distributions are performed, and the results are displayed on a cathode-ray tube (CRT) monitor.

Paper Details

Date Published: 1 April 1981
PDF: 7 pages
Opt. Eng. 20(2) doi: 10.1117/12.7972699
Published in: Optical Engineering Volume 20, Issue 2
Show Author Affiliations
Suazou Nakadate, Tokyo Institute of Technology (Japan)
Nobutaka Magome, Tokyo Institute of Technology (Japan)
Toshio Honda, Tokyo Institute of Technology (Japan)
Jumpei Tsujiuchi, Tokyo Institute of Technology (Japan)


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