X-RAY IMAGE TUBE, X-RAY IMAGE TUBE DEVICE AND X-RAY DEVICE

摘要

An object of the present invention is to provide an X-ray image tube which enables acquisition of an image of a proper density by increasing contrast without increasing an irradiation dose of X-rays. The X-rays absorbed or scattered through a subject emit light on an input surface formed in an input window (14), and the light is further converted into electrons on a photoelectric surface which converts the light into the electrons, accelerated and focused by a focusing electrode (19), and then guided to an anode (20) side. The electrons guided to the anode (20) side are made visible by a fluorescent substance (18), and an image of a color is projected on a glass plate (17) with a luminance and a color based on a distribution of the incident X-rays in accordance with the dose of the X-rays. <IMAGE>