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Volume 45 Issue 4
Apr.  2023
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LI Tingtao, GONG Yanni, ZENG Jinneng, CHANG Le, ZHAO Heng, TAN Hesheng, CHU Zhujun, CHEN Chao, ZHOU Shankun, LI Xiaofeng. Methods for Resolution Improvement of Super Ⅱ Image Intensifier[J]. Infrared Technology , 2023, 45(4): 335-341.
Citation: LI Tingtao, GONG Yanni, ZENG Jinneng, CHANG Le, ZHAO Heng, TAN Hesheng, CHU Zhujun, CHEN Chao, ZHOU Shankun, LI Xiaofeng. Methods for Resolution Improvement of Super Ⅱ Image Intensifier[J]. Infrared Technology , 2023, 45(4): 335-341.
shu

Methods for Resolution Improvement of Super Ⅱ Image Intensifier

  • 1.

    North Night Vision Technology Co. Ltd., Kunming 650217, China

  • 2.

    Science and Technology on Low-light-level Night Vision Laboratory, Xi'an 710065, China

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  • Received Date: April 12, 2021
  • Revised Date: September 01, 2021
    Graphical Abstract
    • Abstract
  • To improve the resolution of the super Ⅱ image intensifier, factors such as the cathode input window, multialkali photocathode, microchannel plate (MCP), and phosphor screen were analyzed. The resolution was increased by reducing the cathode proximity distance, channel diameter of the MCP, and fiber size of the fiber optic faceplate and by depositing an anti-electronic dispersion film onto the output face of the MCP. These methods were verified experimentally. By continuously decreasing the cathode proximity distance continuously, the resolution can be gradually increased. On the condition that the cathode proximity distance is 0.08 mm, when the fiber size of the fiber optic faceplate and channel diameter of the MCP are reduced, with the deposition of a coated anti-electronic dispersion film on the output side of the MCP, a resolution of 72 lp/mm can be achieved, even reaching a maximum of 76 lp/mm. Thus, the resolution is improved by 33.33%.
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    • References (14)
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