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28 September 2019 Irradiance distribution model for laser triangulation displacement sensor and parameter optimization
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Abstract

An irradiance distribution model for laser triangulation displacement sensors is proposed, which is more suitable for practical applications than the geometric optical model (GOM). Based on the irradiance distribution model, a convergence algorithm is developed. Compared with the design parameter optimized method based on the GOM, the convergence algorithm can be used for optimization of not only the traditional design parameters including view angle and object distance but also the waist of the source laser beam. Additionally, using this convergence algorithm, the nonlinearity can be evaluated in the design stage. To validate the convergence algorithm, two example cases are performed. The results show that the nonlinearities are reduced to 6.3098 and 5.7946  μm, respectively.

© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2019/$28.00 © 2019 SPIE
Hongwei Yang, Wei Tao, Kaimei Liu, Yassine Selami, and Hui Zhao "Irradiance distribution model for laser triangulation displacement sensor and parameter optimization," Optical Engineering 58(9), 095106 (28 September 2019). https://doi.org/10.1117/1.OE.58.9.095106
Received: 29 March 2019; Accepted: 10 September 2019; Published: 28 September 2019
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