Testing an aspheric mirror based on phase measuring deflectometry

被引：3

作者：

Zhao W. ^{[1
]}

Su X. ^{[1
]}

Liu Y. ^{[1
]}

Zhang Q. ^{[1
]}

机构：

[1] Department of Opto-Electronics, Sichuan University, Chengdu

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2010年 / 37卷 / 05期

关键词：

Aspheric mirror; Fringe analysis; Optical measurement; Phase measuring deflectometry;

D O I：

10.3788/CJL20103705.1338

中图分类号：

学科分类号：

摘要：

A method based on basic phase measuring deflectometry (PMD) is proposed for testing the aspherical mirror, which uses two reference screens in different distances from the tested mirror. The intensity-modulated patterns are generated on the screens and the images reflected via the tested mirror are recorded by a camera. The original ray of every pixel and its corresponding deflected ray can be constructed using the recorded patterns and phase-shifting technique. Their intersection points and the surface normal are obtained. Then the mirror surface is reconstructed by numerical integration. The procedure for this method is presented, and the computer simulation and experimental results are shown.

引用

页码：1338 / 1341

页数：3

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