APPLICATIONS OF A NOVEL PHASE-SHIFT METHOD USING A COMPUTER-CONTROLLED POLARIZATION MECHANISM

被引：19

作者：

JIN, GC ^{[1
]}

BAO, N ^{[1
]}

CHUNG, PS ^{[1
]}

机构：

[1] CITY POLYTECH HONG KONG,DEPT ELECTR ENGN,KOWLOON,HONG KONG

来源：

OPTICAL ENGINEERING | 1994年 / 33卷 / 08期

关键词：

PHASE SHIFT; POLARIZATION; ELECTRONIC SPECKLE PATTERN INTERFEROMETER; OPTICAL METROLOGY;

D O I：

10.1117/12.173565

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new computer-controlled phase-shifting apparatus based on polarization techniques is developed. This apparatus changes phase only by rotating a polarizer using a precise step motor and a specially designed decelerator. The precision of this method can be higher than other methods because of the accurate control of the rotating angle. Four applications of this technique to optical interferometry and 3-D shape measurements are presented.

引用

页码：2733 / 2737

页数：5

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