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Applied Optics

Applied Optics


  • Vol. 43, Iss. 25 — Sep. 1, 2004
  • pp: 4816–4820

Precision ranger for measuring large mechanical components

Zhao-Fei Zhou, Tao Zhang, Wei Huang, Long-De Guo, and Jie Huang  »View Author Affiliations

Applied Optics, Vol. 43, Issue 25, pp. 4816-4820 (2004)

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We present a precision laser ranger system for the measurement of large manufactured components and structures. The system was developed based on a beat-wave interferometry principle. The light source of this system is a frequency-stabilized laser with a frequency stability of 1 × 10-7 (in open air) or 10-8 (in the laboratory). The laser operates in two longitudinal modes, and the two modes are generated in common resonator; therefore the two beams are naturally coaxial. The precision ranger system does not need a long guide or any heavy machinery. In this system an adaptive filter and a wavelet-transform program are used to improve the measurement accuracy. The system described here has a measuring range of 0–20 m and a measuring uncertainty of 30 μm/10 m.

© 2004 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry

Original Manuscript: January 13, 2004
Revised Manuscript: May 17, 2004
Manuscript Accepted: May 26, 2004
Published: September 1, 2004

Zhao-Fei Zhou, Tao Zhang, Wei Huang, Long-De Guo, and Jie Huang, "Precision ranger for measuring large mechanical components," Appl. Opt. 43, 4816-4820 (2004)

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