A study of the high-precision displacement laser probe

Yuming Fan; Guoxiong Zhang

doi:10.1117/12.694448

10 June 2006 A study of the high-precision displacement laser probe

Yuming Fan, Guoxiong Zhang

Proceedings Volume 6344, Advanced Laser Technologies 2005; 63443B (2006) https://doi.org/10.1117/12.694448
Event: Advanced Laser Technologies 2005, 2005, Tianjin, China

Abstract

On the basis of the measuring principle of the dynamic active optical confocal probe based on time difference measurement that has a reference path, a dynamic active optical confocal probe based on time difference measurement but has no reference path is developed. In this paper, the working principle of this optical confocal probe is dissertated. A large-scale integrated measuring system is designed to simplify the structure of the probe and to enhance the stability of the probe. Single-chip microcomputer system with a high-speed ADC is selected in the measurement and control system of the probe. At the end of the paper, experiments on the performance of the optical confocal probe based on time difference measurement with no reference path are carried out. Experiment results show that the probe has a measuring resolution of 0.05μm, a measuring range of 0.2mm and a linearity of 0.4μm.

Citation Download Citation

Yuming Fan and Guoxiong Zhang "A study of the high-precision displacement laser probe", Proc. SPIE 6344, Advanced Laser Technologies 2005, 63443B (10 June 2006); https://doi.org/10.1117/12.694448

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