• Infrared and Laser Engineering
  • Vol. 49, Issue 7, 20190490 (2020)
Yankai Mao, Zhenyu Zhao, Guohua Zhang, and Guangyu Shi
Author Affiliations
  • 中国航空工业集团公司洛阳电光设备研究所,河南 洛阳 471009
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    DOI: 10.3788/IRLA20190490 Cite this Article
    Yankai Mao, Zhenyu Zhao, Guohua Zhang, Guangyu Shi. Optical design of infrared dual band/dual field of view seeker[J]. Infrared and Laser Engineering, 2020, 49(7): 20190490 Copy Citation Text show less
    Axial motion zoom
    Fig. 1. Axial motion zoom
    Switch-type zoom
    Fig. 2. Switch-type zoom
    Schematic diagram of optical structure
    Fig. 3. Schematic diagram of optical structure
    IR optical system
    Fig. 4. IR optical system
    MTF curves of IR optical system
    Fig. 5. MTF curves of IR optical system
    IndexLWIR/wide fieldLWIR/narrow fieldMWIR
    Focal length/mm215320.92
    Field of view25.92°×20.80°10.24°×8.27°25.85°×20.80°
    Table 1. Index of optical system
    MaterialsZnsZnSeGermIRG204
    Absorption coefficient/cm–10.15@ 10.6 μm 4×10–4@3.8 μm 1.3×10–3@3.8 μm 2.9×10–2@48 μm
    5×10–4@10.6 μm 2.3×10–2@10.6 μm 2.4×10-–2@8.5 μm
    Table 2. Absorption coefficient of optical materials
    Yankai Mao, Zhenyu Zhao, Guohua Zhang, Guangyu Shi. Optical design of infrared dual band/dual field of view seeker[J]. Infrared and Laser Engineering, 2020, 49(7): 20190490
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