Interferometry

Digital moire´ subtraction in optical engineering

[+] Author Affiliations
Colin Forno

City University, London, United Kingdom

Maurice P. Whelan

European Commission Joint Research Centre, Ispra, Italy?I-21020

Opt. Eng. 40(10), 2199-2207 (Oct 01, 2001). doi:10.1117/1.1402621
History: Received Nov. 29, 2000; Revised Apr. 3, 2001; Accepted Apr. 5, 2001
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Conventionally, for the most accurate measurements, interferometer systems are constructed from high-quality optical elements and include fine controls for precise alignment. In this alternative approach, all the errors of a poor quality, misaligned system are accepted then eliminated by a simple digital moire´ process. The method offers the possibility of devising very large aperture optical systems for traditional and engineering interferometers from inexpensive and basic components. It can also offer benefits in other measurement techniques, including moire´. © 2001 Society of Photo-Optical Instrumentation Engineers.

© 2001 Society of Photo-Optical Instrumentation Engineers

Citation

Colin Forno and Maurice P. Whelan
"Digital moire´ subtraction in optical engineering", Opt. Eng. 40(10), 2199-2207 (Oct 01, 2001). ; http://dx.doi.org/10.1117/1.1402621


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