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Proceedings Paper

New method of large-scale absolute distance measurement
Author(s): Yongjun Wu; Yang Zhao; Dacheng Li
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Paper Abstract

A frequency-modulation absolute distance measurement techniques using a external-cavity semiconductor laser is proposed. A reference interferometer was adopted in order to reduce the effect of the central frequency drift of the laser on the measurement accuracy. The principle of the measurement is described and the experimental setup is introduced. The measurable range is as large as ten meters.

Paper Details

Date Published: 22 October 1993
PDF: 6 pages
Proc. SPIE 2066, Industrial Optical Sensing and Metrology: Applications and Integration, (22 October 1993); doi: 10.1117/12.162106
Show Author Affiliations
Yongjun Wu, Tsinghua Univ. (China)
Yang Zhao, Tsinghua Univ. (China)
Dacheng Li, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 2066:
Industrial Optical Sensing and Metrology: Applications and Integration
Kevin G. Harding; H. Philip Stahl, Editor(s)

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