ZHANG Liang, PAN Xiao-dong, LIU Yu, LIU Hong-xia. Design of optical compensated high zoom ratio infrared step zoom lens[J]. Journal of Applied Optics, 2013, 34(5): 738-741.
Citation: ZHANG Liang, PAN Xiao-dong, LIU Yu, LIU Hong-xia. Design of optical compensated high zoom ratio infrared step zoom lens[J]. Journal of Applied Optics, 2013, 34(5): 738-741.
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Design of optical compensated high zoom ratio infrared step zoom lens

  • Luoyang Electro-Optical Equipment Research Institute of AVIC,Luoyang 471023,China

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  • According to the optical compensation theory, a 31 infrared step zoom optical system was designed based on 320240 cooled midwave infrared (MWIR) focal plane array (FPA) detector. Its operation wavelength range was 3 m~5 m, F number was 4, cold stop efficiency was 100%, and focal length range was 430 mm~12.867 mm. The step zoom optical system was optimized by adopting three kinds of optical materials and aspheric surface. Aberrations of seven fields of view (FOVs) were strictly corrected, the MTF of each FOV was close to diffraction limit, and the image quality was good.
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  • ［1］史光辉.光学补偿式步进变焦距物镜[J].光电工程，2009，36（6）：1-3.
    SHI Guang-hui.Optical compensated step zoom lens[J].Opto-Electronic Engineering,2009,36(6):1-3.(in Chinese with an English abstract)
    [2]陶亮，赵劲松.5×光学补偿长波红外连续变焦物镜系统[J].红外技术，2008，30（4）：210-213.
    TAO Liang,ZHAO Jin-song.Optically compensated LWIR zoom objective with magnification of 5×[J].Infrared Technology,2008,30(4):210-213. (in Chinese with an English abstract)
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