Universal optical setup for phase-shifting and spatial-carrier digital speckle pattern interferometry

被引:14
|
作者
Wu, Sijin [1 ]
Dong, Mingli [1 ]
Fang, Yao [1 ]
Yang, Lianxiang [1 ,2 ]
机构
[1] Beijing Informat Sci & Technol Univ, Sch Instrumentat Sci & Optoelect Engn, Beijing 100192, Peoples R China
[2] Oakland Univ, Dept Mech Engn, Rochester, MI 48309 USA
基金
中国国家自然科学基金;
关键词
Digital speckle pattern interferometry; Phase shift; Spatial carrier; Deformation measurement; Universal optical setup; Digital holographic interferometry; HOLOGRAPHIC-INTERFEROMETRY; SHEAROGRAPHY;
D O I
10.1186/s41476-016-0016-6
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Background: Digital speckle pattern interferometry (DSPI) is a competitive optical tool for full-field deformation measurement. The two main types of DSPI, phase-shifting DSPI (PS-DSPI) and spatial-carrier DSPI (SC-DSPI), are distinguished by their unique optical setups and methods of phase determination. Each DSPI type has its limited ability in practical applications. Results: We designed a universal optical setup that is suitable for both PS-DSPI and SC-DSPI, with the aim of integrating their respective advantages, including PS-DSPI's precise measurement and SC-DSPI's synchronous measurement, improving DSPI's measuring capacity in engineering. Conclusion: The proposed setup also has several other advantages, including a simple and robust structure, easy adjustment and operation, and versatility of measuring approach.
引用
收藏
页数:9
相关论文
共 50 条