Design of a projection moire system based on a nonuniform grating projection

被引：2

作者：

Xu, Jingchao ^{[1
]}

Zhang, Ruyue ^{[1
]}

Chen, Jubing ^{[2
]}

Miao, Hong ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Modern Mech, CAS, Key Lab Mech Behav & Design Mat, Hefei, Peoples R China

[2] Shanghai Jiao Tong Univ, Dept Engn Mech, Shanghai, Peoples R China

来源：

OPTICAL ENGINEERING | 2023年 / 62卷 / 02期

基金：

中国国家自然科学基金;

关键词：

projection moire; fringe projection; phase shifting; phase-to-height relationship; NONSINUSOIDAL WAVE-FORMS; PHASE-ERROR ANALYSIS; FRINGE PROJECTION; NONPARALLEL ILLUMINATION; PROFILOMETRY; CALIBRATION;

D O I：

10.1117/1.OE.62.2.024104

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In the projection moire method based on equally spaced grating projection, the moire pattern is often nonlinear and nonuniform because of oblique-angle projection. A new measurement method based on a newly designed nonuniform grating projection is proposed. A model of the projection moire system based on the designed nonuniform grating projection was built, and the phase-to-height relationship of the proposed system was adjusted. High-quality periodic moire patterns were obtained in the full measurement field in this system. Experiments demonstrated the precision and validity of the projection moire system based on the designed nonuniform grating. The measurement resolution of the proposed system was 0.006 mm in an 800 x 600 mm(2) area, i.e., one hundred thousandths of the measurement field of view.

引用

页数：13

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