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15 October 2015 Infrared zoom lens design based on target correlation recognition and tracking
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Proceedings Volume 9676, AOPC 2015: Optical Design and Manufacturing Technologies; 967607 (2015) https://doi.org/10.1117/12.2197584
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China
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.
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Su Zhang, Jin Duan, Qiang Fu, and Wen-sheng Wang "Infrared zoom lens design based on target correlation recognition and tracking", Proc. SPIE 9676, AOPC 2015: Optical Design and Manufacturing Technologies, 967607 (15 October 2015); https://doi.org/10.1117/12.2197584
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