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Proceedings Paper

Correlation method for testing optical surfaces
Author(s): Jiri Novak; Antonin Miks
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Paper Abstract

Our paper describes a relatively simple method for testing a general shape of optical surfaces (i.e. flat, spherical or aspherical surfaces). The aim of this work is to propose a simple evaluation method that will enable to speed up the testing process of optical surfaces. The proposed method does not require to make a detail analysis of the interference field, i.e. determination of the shape and orders of interference fringes as it is necessary with existing interferometric methods. The deviation of the tested surface from its nominal shape is characterized by a correlation coefficient between the tested wave field and reference wave field that corresponds to the nominal shape of surface. By minimization of the correlation coefficient, one can obtain information about the deviation of the tested optical surface from its nominal shape. The evaluation method is universal and can be used for testing flat, spherical or aspherical optical surfaces.

Paper Details

Date Published: 20 April 2006
PDF: 5 pages
Proc. SPIE 6158, Lightmetry and Light and Optics in Biomedicine 2004, 61580J (20 April 2006); doi: 10.1117/12.675776
Show Author Affiliations
Jiri Novak, Czech Technical Univ. (Czech Republic)
Antonin Miks, Czech Technical Univ. (Czech Republic)

Published in SPIE Proceedings Vol. 6158:
Lightmetry and Light and Optics in Biomedicine 2004
Katarzyna Kolacz; Jacek Sochacki, Editor(s)

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