Research on cam curve structure for Infrared zoom optical system

Ling Wang; Lin Li

doi:10.1117/12.2544030

18 December 2019 Research on cam curve structure for Infrared zoom optical system

Ling Wang, Lin Li

Proceedings Volume 11341, AOPC 2019: Space Optics, Telescopes, and Instrumentation; 1134117 (2019) https://doi.org/10.1117/12.2544030
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

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.

Citation Download Citation

Ling Wang and Lin Li "Research on cam curve structure for Infrared zoom optical system", Proc. SPIE 11341, AOPC 2019: Space Optics, Telescopes, and Instrumentation, 1134117 (18 December 2019); https://doi.org/10.1117/12.2544030

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KEYWORDS

Zoom lenses

Content addressable memory

Zemax

Ray tracing

Image quality

Optical design

Image processing

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