Radiation Screen For An X-Ray Device

The invention relates to a radiation screen ( 30 ) for an X-ray device ( 1 ), comprising at least one radiation limiting means which is displaceably mounted and is embodied as a diaphragm. According to the invention, the radiation limiting means is displaceably mounted on a plane in a perpendicular manner in relation to a defining bundle of rays ( 6 ), and comprises a plurality of differently shaped diaphragm apertures ( 40 . . . 51, 60 . . . 66 ) for continuously limiting the different bundle of rays ( 6 ). It can, for example, be embodied as an essentially rotation-symmetrical perforated disk. In another embodiment, the radiation screen comprises two radiation defining means which are arranged in an overlapping manner in the direction of the bundle of rays ( 6 ) which are to be defined.