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Proceedings Paper

Theoretical and experimental study on chromatic confocal position sensor
Author(s): Chun-Hui Niu; Wen-Yi Deng; Xian-Hui Mao; Xin Gao; Cong Han
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Paper Abstract

In this paper, the chromatic confocal technique application in position measurement is studyed theoretically and experimentally. Firstly, a set of refractive lenses are designed and a position measurement device is established for this purpose. Then, calibration of wavelength-depth relationship has been performed. The calibration results accords with the theoretical design results well. Third, influence of the detector pinhole size on axial resolution of the measurement system is analyzed. It is clear from numerical simulation that the full width of half maximum (FWHM) of spectral distribution on the detector will increase with enlargement of pinhole size, which makes axial resolution decrease. The experiment results also disclose identical tendency. It can be concluded that the position measurement system can realize rapid position measurement with higher precision.

Paper Details

Date Published: 9 November 2010
PDF: 8 pages
Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78531B (9 November 2010); doi: 10.1117/12.867706
Show Author Affiliations
Chun-Hui Niu, Beijing Information Science and Technology Univ. (China)
Wen-Yi Deng, Beijing Information Science and Technology Univ. (China)
Xian-Hui Mao, Beijing Information Science and Technology Univ. (China)
Xin Gao, Beijing Information Science and Technology Univ. (China)
Cong Han, Beijing Information Science and Technology Univ. (China)


Published in SPIE Proceedings Vol. 7853:
Advanced Sensor Systems and Applications IV
Brian Culshaw; Yanbiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan; Lin Zhang, Editor(s)

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