Center location of non-diffracting beam in straightness error measurement

Hui Chen; Bin Zhao; Guoli Zhu

doi:10.1117/12.819730

31 December 2008 Center location of non-diffracting beam in straightness error measurement

Hui Chen, Bin Zhao, Guoli Zhu

Proceedings Volume 7130, Fourth International Symposium on Precision Mechanical Measurements; 71304Q (2008) https://doi.org/10.1117/12.819730
Event: Fourth International Symposium on Precision Mechanical Measurements, 2008, Anhui, China

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.

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Hui Chen, Bin Zhao, and Guoli Zhu "Center location of non-diffracting beam in straightness error measurement", Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71304Q (31 December 2008); https://doi.org/10.1117/12.819730

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KEYWORDS

Nondiffracting beams

Detection and tracking algorithms

Data centers

Optical simulations

Axicons

Beam propagation method

Computer simulations

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