28 October 2016 Error analysis of spherical scanning mechanism used for surface defects detection
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Proceedings Volume 9683, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 96831U (2016) https://doi.org/10.1117/12.2243267
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China
Abstract
Subaperture stitching method is used for optics surface defects detection by defects imaging. Stitching based on position is efficient while stitching error induced by the error of the scanning mechanism may cause defects dislocation. According to the stitching error analysis of spherical optics defects, a method based on Monte Carlo simulation is proposed in this paper. Firs t the volumetric error model is established based on mult ibody system theory. On this basis, the stitching error model is established and applied to compute error by Monte Carlo simulation. Analyze error and then define the tolerance of the scanning mechanism to limit stitching error. Simulation results of an optical element whose diameter is 60mm show that the scanning mechanism should satisfy that the positioning accuracy and straightness in Y direction of X axis, the run-out errors in X and Y direction of B axis, and the verticality between X and Y axis are less than 1μm, the run-out errors in X and Y direction of C axis are less than 2.8μ m, the run-out errors of B and C are less than 4.6μm. Under such conditions, the stitching error will be less than 10μm.
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Haoliang Xiong, Haoliang Xiong, Yongying Yang, Yongying Yang, Chen Li, Chen Li, Huiting Chai, Huiting Chai, Wenlin Xv, Wenlin Xv, Kai Yan, Kai Yan, Lin Zhou, Lin Zhou, Yang Li, Yang Li, Yihui Zhang, Yihui Zhang, Dong Liu, Dong Liu, Jian Bai, Jian Bai, Yibing Shen, Yibing Shen, Pin Cao, Pin Cao, } "Error analysis of spherical scanning mechanism used for surface defects detection", Proc. SPIE 9683, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 96831U (28 October 2016); doi: 10.1117/12.2243267; https://doi.org/10.1117/12.2243267
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