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Volume 44 Issue 4
Apr.  2022
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SU Yue, BAI Xiaofeng, DANG Xiaogang, FENG Danqing, CHENG Hongchang, LI Zhoukui, HAN Kun. Influence of Brightness Gain on the Object-Background Contrast of an Image Intensifier[J]. Infrared Technology , 2022, 44(4): 383-388.
Citation: SU Yue, BAI Xiaofeng, DANG Xiaogang, FENG Danqing, CHENG Hongchang, LI Zhoukui, HAN Kun. Influence of Brightness Gain on the Object-Background Contrast of an Image Intensifier[J]. Infrared Technology , 2022, 44(4): 383-388.
shu

Influence of Brightness Gain on the Object-Background Contrast of an Image Intensifier

  • 1.

    Kunming Institute of Physics, Kunming 650223, China

  • 2.

    Science and Technology on Low-Light-Level Night Vision Laboratory, Xi'an 710065, China

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  • Received Date: December 20, 2021
  • Revised Date: January 10, 2022
    Graphical Abstract
    • Abstract
  • Brightness gain is an important parameter of low-light image intensifiers. It affects the accuracy of the object-background contrast in low-light night vision environments. Based on the principle of contrast tests, this study analyzes the relationship between the brightness gain and the object-background contrast, as well as influencing factors, via the object-background contrast test on an ICCD with different brightness gains. The results show that when the brightness gain is 12000, 8300, or 6000 cd/(m2·lx) and the ambient illuminance is within the range of [2×10－3, 8×10－3] (lx), the object-background contrast is minimally affected by the brightness gain. However, when the illuminance is outside this range, the object-background contrast test result may be distorted due to the influence of the brightness gain. The results of this study can guide the improvement of accuracy of ICCD object-background contrast tests.
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    • References (13)
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