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Proceedings Paper

Infrared zoom lens design based on target correlation recognition and tracking
Author(s): Su Zhang; Jin Duan; Qiang Fu; Wen-sheng Wang
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Paper Abstract

To expand the infrared (IR) target detection scope of tank, according to the requirements of real-time recognition and tracking for target with joint transform correlator (JTC) a set of infrared (IR) continuous zoom optical system with 8-12 μm long-wave-band was designed, which applied long-wave 384× 288 element uncooled thermal IR focal plane array detector. In this system, the zoom ratio is 8× , the range of the focal length is 30mm-240mm, F number is 2 and during the zoom process the relative aperture is invariant. This system used the mechanical compensation method, after designed and optimized, it can be composed of 6 spherical lenses with Ge and ZnS only. The design results show that when the cutoff frequency is 14lp/mm, in the whole range of the focal length the MTF curves are all above 0.52 which all approach to the diffraction limit curves. And the spot size is smaller than the pixel size of the receiver. It can meet the requirement of long IR target recognition and tracking in the practical application.

Paper Details

Date Published: 15 October 2015
PDF: 9 pages
Proc. SPIE 9676, AOPC 2015: Optical Design and Manufacturing Technologies, 967607 (15 October 2015); doi: 10.1117/12.2197584
Show Author Affiliations
Su Zhang, Changchun Univ. of Science and Technology (China)
Jin Duan, Changchun Univ. of Science and Technology (China)
Qiang Fu, Changchun Univ. of Science and Technology (China)
Wen-sheng Wang, Changchun Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 9676:
AOPC 2015: Optical Design and Manufacturing Technologies
Lin Li; Kevin P. Thompson; Ligong Zheng, Editor(s)

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