Testing aspheric surfaces with CGH of different accuracy in industrial manufacturing environs

Thomas Herrmann

doi:10.1117/12.448031

9 November 2001 Testing aspheric surfaces with CGH of different accuracy in industrial manufacturing environs

Thomas Herrmann

Proceedings Volume 4440, Lithographic and Micromachining Techniques for Optical Component Fabrication; (2001) https://doi.org/10.1117/12.448031
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

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.

Citation Download Citation

Thomas Herrmann "Testing aspheric surfaces with CGH of different accuracy in industrial manufacturing environs", Proc. SPIE 4440, Lithographic and Micromachining Techniques for Optical Component Fabrication, (9 November 2001); https://doi.org/10.1117/12.448031

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