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Proceedings Paper

Testing aspheric surfaces with CGH of different accuracy in industrial manufacturing environs
Author(s): Thomas Herrmann
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Paper Abstract

Testing aspheric surfaces by interferometer set-up together with a NULL-Computer Generated Hologram (NULL-CGH) is a well-established method. Nevertheless, this method is used in industrial manufacturing environs only frequently yet due to certification issues, cost dependence on laboratory-intensive equipment and highly specialized skills that are required to perform Null-tests for aspheric surfaces. On the other hand there is no widely accepted alternate method to feedback the aspheric test surfaces's shape error to the workmanship during fabrication of aspherics. This paper deals with results obtained by testing aspheric surfaces in industrial manufacturing environs with CGH of different production accuracy.

Paper Details

Date Published: 9 November 2001
PDF: 7 pages
Proc. SPIE 4440, Lithographic and Micromachining Techniques for Optical Component Fabrication, (9 November 2001); doi: 10.1117/12.448031
Show Author Affiliations
Thomas Herrmann, JENOPTIK Laser, Optik, Systeme GmbH (Germany)


Published in SPIE Proceedings Vol. 4440:
Lithographic and Micromachining Techniques for Optical Component Fabrication
Ernst-Bernhard Kley; Hans Peter Herzig, Editor(s)

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