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Optical Engineering

Two-dimensional small-rotation-angle measurement using an imaging method
Author(s): Takamasa Suzuki; Takanori Endo; Osami Sasaki; John E. Greivenkamp
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Paper Abstract

A two-dimensional small-rotation-angle measurement system based on fringe projection is proposed and demonstrated. Simple and effective signal processing is described and applied to the angular calculation. Several measurements indicate a measurement accuracy of ≈ 0.4 arcsec, which is comparable to that of a high-priced autocollimator. The two-dimensional two-pitch grating used in our prototype system provides a wide measurement range, which is expected to reach 1300 arcsec for both x- and y-direction rotations.

Paper Details

Date Published: 1 April 2006
PDF: 7 pages
Opt. Eng. 45(4) 043604 doi: 10.1117/1.2188945
Published in: Optical Engineering Volume 45, Issue 4
Show Author Affiliations
Takamasa Suzuki, Niigata Univ. (Japan)
Takanori Endo, Niigata Univ. (Japan)
Osami Sasaki, Niigata Univ. (Japan)
John E. Greivenkamp, College of Optical Sciences/The Univ. of Arizona (United States)


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