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Mechanism design of a low temperature resistant and high precision zoom lens
Author(s): Bo Gao; Zihao Qiang; Hongtao Yang; Weining Chen; Sansan Chang; Zhi Zhang; Jiaqi Fei; Yue Zhang; Guangdong Zhang; Yue Zhao; Erlei Fan
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Paper Abstract

In the light of optical-electronic imaging system ,designed a continuous zoom lens with a optical aperture of 60mm and a zoom range of 18-246mm. Summarized the disadvantages of the former zoom lens and a low temperature resistant and high precision structure ,named the special-shaped slide and cam zoom structure is proposed, and carrying out the theoretical analysis and the detailed structural design. Theoretical analysis shows that this kind of structure can make the sliding friction between the cam and the main mirror tube turned into rolling friction ,thus reducing the torque demand.it also helps to eliminate the stuck phenomenon of the cam in low temperature environment .The special-shaped slide frame structure can help eliminate the tilt Angle of the moving mirror group in the zoom process ,thus reducing the variation of optic axis .In the he final test, the zoom time is not longer than 8s in the environment which temperature is only -45°C,and the variation of optic axis is smaller than 0.3milliradian,both meet the target requirement.

Paper Details

Date Published: 18 January 2019
PDF: 6 pages
Proc. SPIE 10839, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment, 108391Q (18 January 2019); doi: 10.1117/12.2507810
Show Author Affiliations
Bo Gao, Xi'an Institute of Optics and Precision Mechanics (China)
Zihao Qiang, Xi'an Institute of Optics and Precision Mechanics (China)
Hongtao Yang, Xi'an Institute of Optics and Precision Mechanics (China)
Weining Chen, Xi'an Institute of Optics and Precision Mechanics (China)
Sansan Chang, Xi'an Institute of Optics and Precision Mechanics (China)
Zhi Zhang, Xi'an Institute of Optics and Precision Mechanics (China)
Jiaqi Fei, Xi'an Institute of Optics and Precision Mechanics (China)
Yue Zhang, Xi'an Institute of Optics and Precision Mechanics (China)
Guangdong Zhang, Xi'an Institute of Optics and Precision Mechanics (China)
Yue Zhao, Xi'an Institute of Optics and Precision Mechanics (China)
Erlei Fan, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 10839:
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment
Fan Wu; Yudong Zhang; Xiaoliang Ma; Xiong Li; Bin Fan, Editor(s)

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