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Proceedings Paper

A method with exact phase-shifting values and its experimental techniques in shadow moiré topography
Author(s): Hai Yun; Dazhen Yun; Zhenkun Lei
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Paper Abstract

According to the characteristic of the optical field arrangement, parallel illumination and parallel receiving in shadow moire method, that the reference grating and the shadow moire can be shifted equal distance at the same time, are proposed in this paper. First, the calculation formula for determining exact phase-shifting values and its experimental techniques were derived. Second, an exact simulation technique in shadow moire topography was constructed on the basis of the conceptions of geometrical interference mode for forming the virtual shadow moire fringes and the calculation formula of exact phase-shifting values. Third, to verify the validity of the calculation principle and simulation technique, the experimental results of the two typical models were offered, one was the cylinder and the other was sphere. These results indicate that the method proposed in this paper can improve the precision of three dimensional shape reconstructions and promote the development of shadow moire topography.

Paper Details

Date Published: 10 February 2005
PDF: 8 pages
Proc. SPIE 5638, Optical Design and Testing II, (10 February 2005); doi: 10.1117/12.575090
Show Author Affiliations
Hai Yun, Dalian Univ. of Technology (China)
Dazhen Yun, Dalian Univ. of Technology (China)
Zhenkun Lei, Dalian Univ. of Technology (China)

Published in SPIE Proceedings Vol. 5638:
Optical Design and Testing II
Yongtian Wang; Zhicheng Weng; Shenghua Ye; Jose M. Sasian, Editor(s)

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