26 February 2004 Absolute testing of aspheric surfaces
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Proceedings Volume 5252, Optical Fabrication, Testing, and Metrology; (2004); doi: 10.1117/12.513364
Event: Optical Systems Design, 2003, St. Etienne, France
Abstract
A complete absolute interferometric test of aspheres is presented. The method is based on a specially designed computer-generated hologram (CGH), which reconstructs an aspherical wave as well as auxiliary waves. The auxiliary waves are used for calibration. The aberrations of the auxiliary waves are measured absolutely by means of established absolute testing methods. The errors of the auxiliary waves can be transferred to those of the aspheric wave. Methods for absolute testing of aspheric surfaces using multiplex CGHs are described. Test procedures are explained and equations are derived. For axially symmetric aspheres, experimental results are presented and a comparison with the established N-position rotation test is given.
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Stephan Reichelt, Christof Pruss, Hans J. Tiziani, "Absolute testing of aspheric surfaces", Proc. SPIE 5252, Optical Fabrication, Testing, and Metrology, (26 February 2004); doi: 10.1117/12.513364; https://doi.org/10.1117/12.513364
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KEYWORDS
Aspheric lenses

Wavefronts

Calibration

Computer generated holography

Holograms

Distortion

Computer programming

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