DIGITAL PHASE-STEP INTERFEROMETRY - A SIMPLIFIED APPROACH

被引：39

作者：

WILLIAMS, DC ^{[1
]}

NASSAR, NS ^{[1
]}

BANYARD, JE ^{[1
]}

VIRDEE, MS ^{[1
]}

机构：

[1] BRUNEL UNIV,BRUNEL CTR MFG METROL,UXBRIDGE UB8 3PH,MIDDX,ENGLAND

来源：

OPTICS AND LASER TECHNOLOGY | 1991年 / 23卷 / 03期

关键词：

INTERFEROMETRY (MOIRE); PHASE STEPPING; FRINGE ANALYSIS;

D O I：

10.1016/0030-3992(91)90056-T

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In a two-beam optical interferometer, introduction of a tilt between the beams produces a set of nominally straight and equispaced fringes. The phase information represented by deformations in this fringe pattern can then be calculated at each point in a video image by using intensity samples from a group of neighbouring positions. Deformations of a linear grid pattern as encountered in moire methods can be analysed in the same manner. This procedure of spatial phase stepping has been implemented on a fast microcomputer, enabling quantitative results to be obtained in a particularly simple way.

引用

页码：147 / 150

页数：4

共 15 条

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