Method and system for calculating laser beam spot size

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United States of America Patent

PATENT NO 9852518
SERIAL NO

15179294

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Abstract

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A method and system for calculating laser beam spot size, comprising: collecting a spot image of a laser beam and a corresponding background noise image along an optical axis direction; conducting pretreatment using a background subtraction method and a threshold method according to the spot image and the background noise image collected to obtain a pretreated spot image; calculating the central position of a laser spot of the pretreated spot image; and storing the pixel gray values of the spot image at the central position of the laser spot on a horizontal direction and a vertical direction, then conducting Gaussian curve fitting, calculating variances of Gaussian fitted curves on the horizontal direction and the vertical direction, and obtaining the spot radiuses of the spot image on the horizontal direction and the vertical direction according to the variances calculated.

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Patent Owner(s)

Patent OwnerAddress
SHENZHEN UNIVERSITY518061 NO 3688 NANHAI AVENUE YUEHAI STREET NANSHAN DISTRICT SHENZHEN CITY GUANGDONG PROVINCE SHENZHEN CITY GUANGDONG PROVINCE 518061

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Dong Shenzhen, CN 584 9113
Tian, Jindong Shenzhen, CN 5 18
Tian, Yong Shenzhen, CN 110 370
Zhang, Lei Shenzhen, CN 2799 20393

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