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5 September 2019 Absolute distance measurement of rough surfaces using asynchronous optical sampling
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Abstract

We investigate an optical system for the absolute distance measurement of objects with rough surfaces, using the principle of asynchronous optical sampling (ASOPS). A telescope system collects the scattered laser light that returns from the rough surface and directs it into a collimator with high precision. The contrastive absolute distance measurement experiments are carried out using a plane mirror and objects with rough surfaces. The residual error is kept within 10  μm within a 2-ms sampling time for the rough surfaces. Our results indicate that this ASOPS method is a promising candidate for metrological applications in some industrial sites.

© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2019/$28.00 © 2019 SPIE
Wenliang Li, Xinghua Qu, Xianyu Zhao, and Fumin Zhang "Absolute distance measurement of rough surfaces using asynchronous optical sampling," Optical Engineering 58(9), 094101 (5 September 2019). https://doi.org/10.1117/1.OE.58.9.094101
Received: 23 May 2019; Accepted: 9 August 2019; Published: 5 September 2019
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