Acta Photonica Sinica, Volume. 50, Issue 9, 0904003(2021)

Comparison of Resolution Between Super Gen.Ⅱ and Gen.Ⅲ Image Intensifier

Xiaofeng LI, Le CHANG, Heng ZHAO, Yongsheng QIU, Junyu CHEN, and Yanyun ZHANG
Author Affiliations
  • North Night Vision Technology Co.,Ltd, Kunming650214, China
  • show less

    In this paper, the resolution of the super second generation image intensifier and the third generation image intensifier under different illuminations are studied. The results show that the resolution of the super second generation image intensifier and the third generation image intensifier with the same gain, limit resolution, signal to noise ratio and modulation transfer function is constant when the input illumination is above 4.3×10-3 lx, and does not change with the change of input illumination The resolution of the super second generation image intensifier is lower than that of the third generation image intensifier. The lower the input illumination, the greater the difference. The reason is that the third generation image intensifier has higher cathode sensitivity. The higher the sensitivity of the cathode, the higher the initial contrast of the photocathode, and the higher the contrast of the target image on the fluorescent screen, so the higher the resolution under low input illumination. Figure of Merit is an index to characterize the comprehensive performance of image intensifiers. However, when Figure of Merit is used to compare the comprehensive performance of image intensifiers, it can only be compared between the image intensifiers with the same photocathode, but not between the image intensifiers with different photocathode. Therefore, the Figure of Merit can not be used to compare the performance of super second generation and the third generation image intensifiers.

    Tools

    Get Citation

    Copy Citation Text

    Xiaofeng LI, Le CHANG, Heng ZHAO, Yongsheng QIU, Junyu CHEN, Yanyun ZHANG. Comparison of Resolution Between Super Gen.Ⅱ and Gen.Ⅲ Image Intensifier[J]. Acta Photonica Sinica, 2021, 50(9): 0904003

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Detectors

    Received: Mar. 1, 2021

    Accepted: Apr. 20, 2021

    Published Online: Oct. 22, 2021

    The Author Email:

    DOI:10.3788/gzxb20215009.0904003

    Topics

    Please enter the answer below before you can view the full text.
    6+2=
    Submit