The low light level image intensifier was usually applied in the night observation, and it has been developed and
improved for a long history. While it can also be used in the x ray imaging system for its specialty in photos multiplying
and conversion, so in this paper, the technology development of the low light level image intensifier was described at
first and then a novel x ray image intensifier designed by our research group is introduced. The x ray intensifying screen
was the x ray sensor converting the x ray into the visible light. For the visible light from the x ray image intensifier was
too weak to see the image, the low light level image intensifier was used to intensify the light further. When the low light level image intensifier was selected, the novel x ray image intensifier's performance was modeled, which can given the comparison in resolution and brightness between with and without the low light level image intensifier. In conclusion, the novel x ray imaging system's performance is good enough to be applied to security checking, non-destructive testing, and industry detection.