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Proceedings Paper

An alignment technique based on the speckle correlation properties of Fresnel transforming optical systems
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Paper Abstract

The lateral correlation properties of speckle fields have been shown to be useful in aligning multiple optical channels relative to one another. Relative rotational alignment can also be achieved using a sub-sectioning extension of this technique. In this paper, we examine the three dimensional correlation properties of speckle, and by so doing, create a technique that allows for absolute positioning of a single channel free space optical system on the optical axis without the need for markers or gratings.

Paper Details

Date Published: 2 September 2008
PDF: 9 pages
Proc. SPIE 7068, Optical System Alignment and Tolerancing II, 70680L (2 September 2008); doi: 10.1117/12.795722
Show Author Affiliations
Jennifer E. Ward, Univ. College Dublin (Ireland)
Damien P. Kelly, National University of Ireland (Ireland)
John T. Sheridan, Univ. College Dublin (Ireland)

Published in SPIE Proceedings Vol. 7068:
Optical System Alignment and Tolerancing II
José M. Sasian; Richard Neil Youngworth, Editor(s)

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