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Volume 46 Issue 1
Jan.  2024
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XIAO Nachuan, SUN Tuo, HU Liyun, ZHAO Yongquan, WANG Shuangbao, XU Zhimou, ZHANG Xueming. Design of Compact Athermalized Long-Wave Infrared Lens Set with Large Field of View[J]. Infrared Technology , 2024, 46(1): 20-26.
Citation: XIAO Nachuan, SUN Tuo, HU Liyun, ZHAO Yongquan, WANG Shuangbao, XU Zhimou, ZHANG Xueming. Design of Compact Athermalized Long-Wave Infrared Lens Set with Large Field of View[J]. Infrared Technology , 2024, 46(1): 20-26.
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Design of Compact Athermalized Long-Wave Infrared Lens Set with Large Field of View

  • School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China

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  • Received Date: September 15, 2022
  • Revised Date: November 22, 2022
    Graphical Abstract
    • Abstract
  • Following the trend of miniaturization and large fields-of-view for infrared lenses, we designed a large-field-of-view athermalized compact long-wave infrared lens using ZEMAX. The system matches a 384×288@17 μm uncooled long-wave infrared detector with an operating band of 8 μm to 12 μm. The F-number of the system is 1.6. The designed system has a larger field-of-view than a traditional infrared lens, with a full field-of-view reaching 72°. The size of the designed system is small with a total length of only 6.96 mm. The primary lens system lens uses only 3 lenses. Aberration correction and athermalization was realized by combining two infrared materials and six aspherical surfaces. The system has a working temperature range of −40℃ to 60℃. Simulation results show that the MTF of the full field-of-view reaches 0.5 at a spatial frequency of 15 lp/mm and 0.15 at a spatial frequency of 30 lp/mm. Further, to increase the filling factor of the infrared detector and improve energy efficiency, a microlens array is placed in front of the infrared sensor. Miniaturization of the infrared optical system was achieved, providing a solution for the application of thermal imaging cameras on smartphones.
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    • References (14)
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