Hybrid Holographic Interferometer For Measuring Three-Dimensional Deformations

Suazou Nakadate; Nobutaka Magome; Toshio Honda; Jumpei Tsujiuchi

doi:10.1117/12.7972699

1 April 1981 Hybrid Holographic Interferometer For Measuring Three-Dimensional Deformations

Suazou Nakadate, Nobutaka Magome, Toshio Honda, Jumpei Tsujiuchi

Author Affiliations +

Optical Engineering, Vol. 20, Issue 2, 202246 (April 1981). https://doi.org/10.1117/12.7972699

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.

Citation Download Citation

Suazou Nakadate, Nobutaka Magome, Toshio Honda, and Jumpei Tsujiuchi "Hybrid Holographic Interferometer For Measuring Three-Dimensional Deformations," Optical Engineering 20(2), 202246 (1 April 1981). https://doi.org/10.1117/12.7972699

Published: 1 April 1981

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