The x ray collimator is the part that restrains and limits the X-ray. The size of the lead leaf closure in the beam limiter determines the range of the light. The x ray collimator directly aligns with the human body to emit X-rays, but the X-rays have radiation and cannot be randomly scanned by the human body. Therefore, in order to facilitate the adjustment of the X-ray, the x ray collimator is equipped with a lamp to simulate the X-ray for positioning adjustment. There are wires on the x ray collimator to supply power to the lamps in the beam limiter. Generally, there are two types of lamps, namely halogen lamps and LED lamps. Halogen lamps are relatively early lamps. With the development of the times, they are slowly replaced by LED lamps. Now LED lamps are widely used. Newheek’s x ray collimator mainly use LED lamps.