Expert system for generating initial layouts of zoom systems with multiple moving lens groups

Xuemin Cheng; Yongtian Wang; Qun Hao; José M. Sasián

doi:10.1117/1.1827609

1 January 2005 Expert system for generating initial layouts of zoom systems with multiple moving lens groups

Xuemin Cheng, Yongtian Wang, Qun Hao, José M. Sasián

Author Affiliations +

Optical Engineering, Vol. 44, Issue 1, 013001 (January 2005). https://doi.org/10.1117/1.1827609

Abstract

An expert system is developed for the automatic generation of initial layouts for the design of zoom systems with multiple moving lens groups. 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. The lens group database is established from the results of analyzing thousands of zoom lens patents. Design examples are given, which show that the scheme is a practical approach to generate starting points for zoom lens design.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Xuemin Cheng, Yongtian Wang, Qun Hao, and José M. Sasián "Expert system for generating initial layouts of zoom systems with multiple moving lens groups," Optical Engineering 44(1), 013001 (1 January 2005). https://doi.org/10.1117/1.1827609

Published: 1 January 2005

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available