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Proceedings Paper

Active trigonometry and its application to thickness measurement on reflective surface
Author(s): Hong Miao; Xiaoping Wu
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Paper Abstract

The paper introduces a novel method to measure accurate thickness. On the basis of the principle of active trigonometry with vertically incident mode, an obliquely incident mode is proposed. The method is specially designed for a reflective surface of an object, such as a thin steel plate, to measure its thickness in real-time. The influence of the small deflection which is caused by mechanical vibrations is discussed and the manner to reduce this influence is given too.

Paper Details

Date Published: 10 August 1998
PDF: 6 pages
Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); doi: 10.1117/12.318375
Show Author Affiliations
Hong Miao, Univ. of Science and Technology of China (China)
Xiaoping Wu, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 3558:
Automated Optical Inspection for Industry: Theory, Technology, and Applications II
Shenghua Ye, Editor(s)

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