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Optical Engineering

Interferometric straightness measurement system using a holographic grating
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Paper Abstract

A new method for measuring the straightness of travel of a moving table is described. The method uses two conjugate beams diffracted from a holographic grating that is mounted on the moving table. The intensity of two-beam interference is measured and the transverse displacement of the table is calculated from the change in intensity. The system is theoretically capable of measuring the transverse displacement to nanometer-order accuracy. Experimentally, a transverse displacement measurement with an accuracy of 0.12 μm was obtained over a staged travel of 100 mm.

Paper Details

Date Published: 1 April 1994
PDF: 6 pages
Opt. Eng. 33(4) doi: 10.1117/12.163198
Published in: Optical Engineering Volume 33, Issue 4
Show Author Affiliations
Makoto Yamauchi, Mechanical Engineering Lab. (Japan)
Kiyofumi Matsuda, Mechanical Engineering Lab. (Japan)


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