HYBRID HOLOGRAPHIC INTERFEROMETER FOR MEASURING 3-DIMENSIONAL DEFORMATIONS

被引：29

作者：

NAKADATE, S ^{[1
]}

MAGOME, N ^{[1
]}

HONDA, T ^{[1
]}

TSUJIUCHI, J ^{[1
]}

机构：

[1] TOKYO INST TECHNOL, IMAGING SCI & ENGN LAB, MIDORI KU, YOKOHAMA, KANAGAWA 227, JAPAN

来源：

OPTICAL ENGINEERING | 1981年 / 20卷 / 02期

关键词：

INTERFEROMETERS - Applications - MECHANICAL VARIABLES MEASUREMENT;

D O I：

10.1117/12.7972699

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 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 crt monitor.

引用

页码：246 / 252

页数：7

共 12 条

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