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Proceedings Paper

Research on cam curve structure for Infrared zoom optical system
Author(s): Ling Wang; Lin Li
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Paper Abstract

The zoom optical system can realize continuous change of focal length in a certain range while keeping the image plane fixed and the relative aperture basically fixed.At present, the zoom system is designed to ensure the stability of the image surface mostly by mechanical compensation method, and the mechanical structure mostly uses the zoom cam as the power transmission mechanism.Good image quality and simple operation are the development direction of the cam curve design. In this paper, the mechanical compensated two-component zoom optical system is taken as an example, and the corresponding zoom cam curve is obtained by using three methods: the ray tracing method, the multi-point fitting method and ZEMAX macro. The data of image quality evaluation parameters are analyzed and the imaging quality of three cam curve fitting methods is compared.

Paper Details

Date Published: 18 December 2019
PDF: 6 pages
Proc. SPIE 11341, AOPC 2019: Space Optics, Telescopes, and Instrumentation, 1134117 (18 December 2019); doi: 10.1117/12.2544030
Show Author Affiliations
Ling Wang, Beijing Institute of Technology (China)
Lin Li, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 11341:
AOPC 2019: Space Optics, Telescopes, and Instrumentation
Suijian Xue; Xuejun Zhang; Carl Anthony Nardell; Ziyang Zhang, Editor(s)

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