First of all, we need to know what is the basic annual structure of the x ray collimator? The basic structure of the x ray collimator includes a housing, a positioning lamp, a reflecting lens and an opening limit structure. The positioning lamp, the reflecting lens and the opening limiting structure are mounted inside the outer casing of the x ray collimator, wherein the positioning lamp is a light emitting diode. At present, the new type of LED is used as the positioning lamp. Compared with the original x ray collimator using the halogen lamp as the positioning lamp, the LED beam lamp has the following advantages: (1) The power consumption of the LED is small, which can greatly reduce the limit. The power consumption of the beamer is energy-efficient and is especially suitable for portable X-ray generating devices. (2) The brightness of the LED is high, the illumination area is clear, which is convenient for fast positioning of the X-ray irradiation area; (3) The heat of the LED It is very small, even if it is lit for a long time, it will not cause the outer casing and other devices to overheat. Therefore, the lighting time of the LED can be prolonged, the positioning is better for a long time, the positioning effect is better, and the positioning operation is more convenient.