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Proceedings Paper

Theoretical and experimental analysis of modern zoom lens design
Author(s): Xiangyang Wang; Weilin Liu
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Paper Abstract

The need for stability of aberration and correction of images for a zoom lens system should be considered during zooming process. Our work presents detailed theoretical and experimental analysis of multiple moving zoom optical systems. In our work we propose methods to determine the basic parameters of such optical system, the focal lengths of each element of the objective lens and their mutual axial separation. Introduce two different image stability equation and cam curve design method to calculate basic parameters. This type of optical system is widely spread in practice mainly in the field of photographic lenses and in surveying instruments (theodolites, leveling instruments, etc.). Furthermore, the detailed analysis of aberration properties of such optical systems is performed and methods for measuring the focal lengths of individual elements and their mutual distance without the need for disassembling the investigated optical system are presented. Finally according to theoretical and experimental analysis of zoom lens system, a zoom optical system with effective focal length 27-220mm has been design, the first element of such system is fixed, and the other groups can move during zoom process to get a continuity consecutiveness effective focal length (EFL). Using the powerful optimization capabilities of optical design software CODE V; we get the imaging quality analysis such as the modulation transfer function (MTF) etc.

Paper Details

Date Published: 28 February 2017
PDF: 9 pages
Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102563J (28 February 2017); doi: 10.1117/12.2257819
Show Author Affiliations
Xiangyang Wang, Institute of Optics and Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Weilin Liu, Institute of Optics and Electronics (China)

Published in SPIE Proceedings Vol. 10256:
Second International Conference on Photonics and Optical Engineering
Chunmin Zhang; Anand Asundi, Editor(s)

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