Shape measurement by active homodyne phase-stepping in a fibre optic fringe projector

被引：0
|
作者：
Moore, AJ [1 ]
McBride, R [1 ]
Barton, JS [1 ]
Jones, JDC [1 ]
机构：
[1] Heriot Watt Univ, Dept Mech & Chem Engn, Edinburgh EH14 4AS, Midlothian, Scotland
来源：
14TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS | 2000年 / 4185卷
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D O I：
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中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We describe an extension of the active homodyne feedback technique in order to produce stabilised, pi /2 radian phase steps in a full-field interferometer used to project interference fringes onto a test-object and hence to measure its shape. The phase stability and accuracy of each step was measured to be 17 milliradians in a 50 Hz bandwidth.
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页码：692 / 695
页数：4
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