At present, the major international collimator manufacturers include Toshiba, Siemens, etc. The maximum voltage of the collimator x-ray tube produced by our company is 125kv, and the single lighting time of the bulb is 30 seconds. The customer asked what the lead leaf of the collimator looks like, is it completely closed or is there a certain gap? Reply to the customer Lead leaf is optional, there is a layer, the lead leaf control is mainly manual control.
Some manual collimators are also called simple beam limiters. There are two types of collimators: wire-shielding plate type and wire-shielding barrel type. The shielding plate type is to additionally install a lead plate with a certain size of square or round hole in the X tube sleeve window, and the opening of the lead plate is centered on the X-ray center as the center of symmetry. When performing projection, an irradiation field suitable for the size of the hole can be obtained at a certain distance. Generally, an X-ray machine is equipped with multiple shields with different apertures, and the size of the irradiation field of the corresponding distance is indicated on the top for selection. The shape of the shielded cylinder collimator is a conical metal cylinder, and some are lined with a thin lead sheet to increase the protective effect. During projection, it mainly relies on the blocking and absorption of X-rays by the tube wall to limit the irradiation field. Therefore, the size of the irradiation field can be determined by the length and diameter of the shielding cylinder, and the irradiation field is generally circular.