Mr. Joseph E. Hayden Profile

Joseph E. Hayden

Optical Engineer at Eastman Kodak Co

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Proceedings Article | 7 March 2006 Paper

Distortion correction method for aspheric optical testing

Joseph Hayden, Timothy Lewis

Proceedings Volume 4101, (2006) https://doi.org/10.1117/12.498428

KEYWORDS: Distortion, Interferometers, Mirrors, Optical testing, Polishing, Aspheric lenses, Code v, Data modeling, Aspheric optics, Geometrical optics

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Highly aspheric optical components are being used more frequently as increased demands are placed on optical system performance. The use of aspheric optics can simplify an optical design while increasing optical system performance. However, the effects of spatial distortion when testing fast off-axis optics can present a significant challenge to both designing the optical test-set and to post-processing the test data. Correcting for spatial distortion by post-processing the measured data is one approach that can be taken to increase the convergence rate when polishing an optic to a given prescription. This paper discusses the effects of spatial distortion at the exit pupil resulting primarily from the combined effects of geometric perspective distortion and mapping error. A software method for spatial distortion correction is presented along with the use of a distortion verification grid for verifying the accuracy of an applied distortion correction.

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