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Proceedings Paper

Aberrational weight adjustment by tolerance-based weighting in damped least squares optimization
Author(s): Charles D. Todd; Jonathan Maxwell
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Paper Abstract

This paper presents a method of automatically adjusting aberrational weighting factors in a damped least squares optimization program, based on tolerance data provided for each aberration site. The method which is based on previous work by the authors and that of Yao has been developed into a tolerance-based method for aberrational weight adjustment. This enhanced method allows the user to set and adjust weights by a new tolerance-based method. The use of a power index ((rho) ) in the tolerance-based method provides continuously variable control over the amount by which the aberrational weights are adjusted. The practical use of the tolerance-based method is demonstrated using simple and well understood test lenses to reveal the modifications that take place within the iterative design progress, that result from aberrational weight adjustment. Suggestions for suitable tolerance schemes have also been investigated as an integral part of this work, based on the work of Hopkins.

Paper Details

Date Published: 23 August 1996
PDF: 17 pages
Proc. SPIE 2774, Design and Engineering of Optical Systems, (23 August 1996); doi: 10.1117/12.246732
Show Author Affiliations
Charles D. Todd, Imperial College of Science, Technology and Medicine (United Kingdom)
Jonathan Maxwell, Imperial College of Science, Technology and Medicine (United Kingdom)


Published in SPIE Proceedings Vol. 2774:
Design and Engineering of Optical Systems
Joseph J. M. Braat, Editor(s)

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