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Proceedings Paper

High-precision laser interferometer for length metrology
Author(s): Jiajing Pi; Li-Zhuan Zhao; Jian-Guo Du; Wei-Guo Shen
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Paper Abstract

The instrument of type JLY-100 is a standing laser interferometer the wavelength of He-20Ne frequency stabilized laser is used as the standard of length metrology. The temperatures of environment and measurand are measured by a crystal thermometer. The measuring results affected by the environmental parameters can be automatically corrected by a microprocessor. The measuring range of instrument is 0-100 mm. The absolute measuring error is +O. 5L)tm where L is the length of the measurand in meter and the relative accuracy is y 1 x 106.

Paper Details

Date Published: 22 September 1993
PDF: 4 pages
Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993); doi: 10.1117/12.156509
Show Author Affiliations
Jiajing Pi, Wuhan Bureau of Standards and Metrology (China)
Li-Zhuan Zhao, Henan Provincial Institute for Measurement (China)
Jian-Guo Du, Henan Provincial Institute for Measurement (China)
Wei-Guo Shen, Henan Provincial Institute for Measurement (China)

Published in SPIE Proceedings Vol. 2101:
Measurement Technology and Intelligent Instruments
Li Zhu, Editor(s)

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