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Proceedings Paper

Center location of non-diffracting beam in straightness error measurement
Author(s): Hui Chen; Bin Zhao; Guoli Zhu
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Paper Abstract

As the non-diffracting beam has a very small central spot diameter and a long non-diffracting distance of transmission, fairly high measuring accuracy and continuous measurement can be expected from its application in straightness error measurement. The accuracy of center positioning of non-diffracting beam is vital to the accuracy of straightness error measurement. Traditional methods of locating spot center are not suitable to non-diffracting beam. A new method of global center detection for non-diffracting beam is proposed. In order to verify the performance of this method, theoretical and experimental analyses were conducted. The results show that the presented method is effective. The center location of non-diffracting beam with noise is realized with subpixel sensitivity and high anti-interference ability.

Paper Details

Date Published: 31 December 2008
PDF: 6 pages
Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71304Q (31 December 2008); doi: 10.1117/12.819730
Show Author Affiliations
Hui Chen, Huazhong Univ. of Science and Technology (China)
Bin Zhao, Huazhong Univ. of Science and Technology (China)
Guoli Zhu, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 7130:
Fourth International Symposium on Precision Mechanical Measurements
Yetai Fei; Kuang-Chao Fan; Rongsheng Lu, Editor(s)

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