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Proceedings Paper

Design of double-group IR zoom lens
Author(s): Nanxi Wang; Bo Zhang; Xiaobai Jiang; Yuan Li; Wenli Kang; Yulan He; Hua Qiang
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Paper Abstract

A 15× double-group linkage zoom lens was presented based on the 640×512 cooled FPA. Having two alternate components linked and moved together, double-group zoom structure has smoother cam curve, so the displacement of all components are smaller and the total length is shorter. The focal length rang is 30~450mm and wavelength is 3.7~4.8μm, F number is 4. This lens was placed at cold shield and 100% cold shield efficiency had reached. Moreover, detailed design and image quality were given by CODE V® optical software. After analysis, MTF approaches diffraction limit. The results show that this optical system has large zoom ratio, and excellent image quality.

Paper Details

Date Published: 8 October 2015
PDF: 5 pages
Proc. SPIE 9677, AOPC 2015: Optical Test, Measurement, and Equipment, 96771E (8 October 2015); doi: 10.1117/12.2199673
Show Author Affiliations
Nanxi Wang, Xi'an Institute of Applied Optics (China)
Bo Zhang, Xi'an Institute of Applied Optics (China)
Xiaobai Jiang, Xi'an Institute of Applied Optics (China)
Yuan Li, Xi'an Institute of Applied Optics (China)
Wenli Kang, Xi'an Institute of Applied Optics (China)
Yulan He, Xi'an Institute of Applied Optics (China)
Hua Qiang, Xi'an Institute of Applied Optics (China)


Published in SPIE Proceedings Vol. 9677:
AOPC 2015: Optical Test, Measurement, and Equipment
Sen Han; Jonathan D. Ellis; Junpeng Guo; Yongcai Guo, Editor(s)

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