Study on Laser Triangulation Measurement Principle of Three Dimensional Surface Roughness

Feng Kui Cui; Z.B. Song; X.Q. Wang; Feng Shou Zhang; Yan Li

doi:10.4028/www.scientific.net/AMR.136.91

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 136Study on Laser Triangulation Measurement Principle...

Study on Laser Triangulation Measurement Principle of Three Dimensional Surface Roughness

Abstract:

The basic principle of three-dimensional surface roughness laser triangulation has been analyzed in this paper, Light-path diagram and optical geometric relationship of direct-type and symmetric oblique-type triangulation measurement is studied, the mathematical model of Surface micro-height information analysis is given. Resolution of direct-type and symmetric oblique-type triangulation measurement is compared both qualitatively and quantitatively. At last, the Application of laser triangulation method in Three-dimensional surface roughness measurement is analyzed.