Aspheric optics at different quality levels and functional need

Kurt B. Becker; Bernd Doerband; Roland Loercher; Michael Schmidt

doi:10.1117/12.360130

6 September 1999 Aspheric optics at different quality levels and functional need

Kurt B. Becker, Bernd Doerband, Roland Loercher, Michael Schmidt

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Proceedings Volume 3739, Optical Fabrication and Testing; (1999) https://doi.org/10.1117/12.360130
Event: Optical Systems Design and Production, 1999, Berlin, Germany

Abstract

The design of optical systems gains profit from the application of aspheric elements: to correct for image aberrations, to reduce weight or system length or to cope with other functional needs like the number of reflections or the field size. Manufacturing, however, is suffering in practice from problems resulting from the reduced symmetry of the components as compared to spherical optics. Almost all large optical companies in the world are working on solving the problem of fabrication of accurate aspheric elements at reasonable cost. In this paper fabrication and metrology aspects of aspherical elements in the IR, visible, UV and EUV at Carl Zeiss and other companies will be discussed. The specifications achieved presently are ranging between some micrometers to nm for figure accuracy and 100nm to 0.1nm for microroughness.

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Kurt B. Becker, Bernd Doerband, Roland Loercher, and Michael Schmidt "Aspheric optics at different quality levels and functional need", Proc. SPIE 3739, Optical Fabrication and Testing, (6 September 1999); https://doi.org/10.1117/12.360130

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