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Proceedings Paper

Expert system for zoom lens design
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Paper Abstract

An expert system for zoom lens design is developed. The Gaussian parameters of the zoom system are optimized using the damped-least-squares method to achieve smooth zoom cam curves, with the F-number of each lens group in the zoom system constrained to a rational value. Then each lens group is selected automatically from a database according to its range of F-number, field of view and magnification ratio as it is used in the zoom system. Design examples are given, which show that the scheme is a practical way for the automatic determination of initial layout for zoom lens design.

Paper Details

Date Published: 18 February 2004
PDF: 6 pages
Proc. SPIE 5249, Optical Design and Engineering, (18 February 2004); doi: 10.1117/12.531203
Show Author Affiliations
Xuemin Cheng, Beijing Institute of Technology (China)
Yongtian Wang, Beijing Institute of Technology (China)
Qun Hao, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 5249:
Optical Design and Engineering
Laurent Mazuray; Philip J. Rogers; Rolf Wartmann, Editor(s)

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