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Proceedings Paper

Thermal stability of laser tracking interferometer calibration
Author(s): Scott C. Sandwith
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Paper Abstract

Uncompensated thermomechanical errors in laser tracking interferometers are examined by evaluating the difference between tracking interferometer compensations in a controlled laboratory environment versus being compensated in a factory environment. The hypothesis under test was that compensation in a factory environment does not adversely affect, and may actually improve, the uncertainty of laser tracker systems. This hypothesis was confirmed by measuring a standard (i.e., linear interferometer) using laboratory- compensated and certified instruments, and then compensating the instrument in the factory environment and re-measuring the standard. The results showed that in-shop compensation generates less variation in the measurement of the standard when compared to the laboratory-compensated and certified instruments. Certified weather stations are used to compensate for the uncontrolled atmospheric effects on the range measurement.

Paper Details

Date Published: 16 November 1999
PDF: 11 pages
Proc. SPIE 3835, Three-Dimensional Imaging, Optical Metrology, and Inspection V, (16 November 1999); doi: 10.1117/12.370250
Show Author Affiliations
Scott C. Sandwith, Boeing Commercial Airplane Group (United States)

Published in SPIE Proceedings Vol. 3835:
Three-Dimensional Imaging, Optical Metrology, and Inspection V
Kevin G. Harding, Editor(s)

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