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Proceedings Paper

Global optimization with traveling aspherics: aspheric surface number as continuous variable
Author(s): Akira Yabe
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Paper Abstract

The aspherics is effective to reduce the number of lenses and to improve the performance of the optical system. The lens designer determines the surfaces to be aspheric and executes the optimization. But it is unknown a priori which surfaces should be aspheric. If the designer tries all the combination of the aspheric surface numbers, the number of the combination is very large. One method to solve this difficulty is to extend the aspheric surface number to a continuous variable and include it in the variables of the optimization. I would call it the traveling aspherics. The best surface number of the aspherics is determined through the optimization. The global optimization is necessary to get the best surface number of the aspherics. In section 1, the definition of the traveling aspherics is explained. In section 2, the design procedure with the traveling aspherics is explained. In section 3, the effect of the traveling aspherics is examined through a practical lens design problem. The method of the traveling aspherics can be applied to any complicated cases and requires no special experience of the lens design.

Paper Details

Date Published: 9 September 2010
PDF: 9 pages
Proc. SPIE 7652, International Optical Design Conference 2010, 76522P (9 September 2010); doi: 10.1117/12.866826
Show Author Affiliations
Akira Yabe, Consultant (Germany)

Published in SPIE Proceedings Vol. 7652:
International Optical Design Conference 2010
Julie Bentley; Anurag Gupta; Richard N. Youngworth, Editor(s)

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