The brightness on the X-ray fluorescent screen is very weak, and it is not suitable for directly overlaying images with a TV camera. There are ways to solve this difficulty. The first is to increase the brightness of the fluorescent screen, but the X-ray dose must be increased. The second is to use an enhanced fluorescent screen and a high-sensitivity camera tube, but the resulting image quality is not ideal. The third and most reasonable way is to use an image intensifier to first convert the X-ray image into a visible light image whose brightness has increased several times. Times before recording. According to the different types of input light, image intensifiers can be divided into X-ray image intensifiers, infrared image intensifiers and visible light image intensifiers. The image intensifier is composed of an enhancement tube, a tube container, a power supply, an optical system, and a bracket (support). The main part of it is the image intensifier tube, which has an input screen (accepting X-ray radiation to generate electron flow) and an output screen (accepting electron bombardment to emit light), so that the former enhances the multiple brightness image on the output screen. The reinforced tube is a vacuum tube made of glass. For the purpose of protection, a tube container is needed. This container also plays a role of shielding X-rays and external electromagnetic fields and protecting personnel from high-voltage damage. In addition to this, the booster also has a set of power supplies, including a high-voltage power supply for the booster tube, a focusing power supply, and a power source for driving the degassing ion pump in the booster tube. The image enhancement tube is the heart component of the image intensifier.