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Measurement of micro-angle based on the Talbot effect of 2D grating
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Paper Abstract

In this paper, we propose a method for measuring the micro-angle based on the 2D grating Talbot effect to generate the moiré fringe period. Firstly, the measurement principle of the micro rotation angle of the 2D grating and the characteristics of the 2D grating Talbot imaging are analyzed. And then the 2D grating is measured by the Moiré fringe generated by the Talbot image. Based on this, we derive the calculation formula of the angle, and analyze the accuracy of this method of measuring angle. The method of generating moiré fringes by Talbot imaging has the advantages of higher precision, more flexibility and convenience in measuring the rotation angle than stacking two directly.

Paper Details

Date Published: 2 November 2018
PDF: 6 pages
Proc. SPIE 10818, Holography, Diffractive Optics, and Applications VIII, 1081813 (2 November 2018); doi: 10.1117/12.2501066
Show Author Affiliations
Xing Xu, Southwest Univ. (China)
Gaokun Huang, Southwest Univ. (China)
Sumei Zhou, Southwest Univ. (China)


Published in SPIE Proceedings Vol. 10818:
Holography, Diffractive Optics, and Applications VIII
Yunlong Sheng; Chongxiu Yu; Changhe Zhou, Editor(s)

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