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Optical Engineering

Technique for aligning optical and mechanical axes based on a rotating linear grating
Author(s): Tomas D. Milster; Cynthia L. Vernold
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Paper Abstract

We describe a technique for aligning the axis of an optical system with the axis of a rotating mechanical system. The optical system is focused onto a linear grating that rotates in conjunction with the mechanical system. Light reflected from the grating produces an interference pattern in the pupil of the optical system. Temporal modulation of the fringes in the interference pattern is observed as the mechanical system rotates if the optical and mechanical axes are misaligned. Experimentally we demonstrate alignment to better than 0.1 μm.

Paper Details

Date Published: 1 October 1995
PDF: 6 pages
Opt. Eng. 34(10) doi: 10.1117/12.210764
Published in: Optical Engineering Volume 34, Issue 10
Show Author Affiliations
Tomas D. Milster, Univ. of Arizona (United States)
Cynthia L. Vernold, Univ. of Arizona (United States)

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