LASER POSITIONER FOR X-RAY EMITTER Russian patent published in 2009 - IPC H05G1/00 

FIELD: physics.

SUBSTANCE: invention can be used for aligning an X-ray emitter with respect to an object. The laser positioner for an X-ray emitter has an X-ray emitter, laser, two mirrors, television system, ring-shaped laser matrix and a laser range-finder. The laser positioner also has a frame with a square section, placed symmetrically about the axis of the X-ray beam, perpendicular to it. At the centres of the sides of the frame, there are identical microlasers, the axes of which are parallel to each other and the axis of the X-ray beam. In front of the microlasers, there are identical cylindrical lenses, directed with respect to their axes such that, the flat divergent light beams they form propagate in planes passing through the corresponding side of the frame, parallel the axis of the X-ray beam, and form four mutually perpendicular light strips on the surface of an object, the distance between which remains constant for any distance from the object to the X-ray emitter and equal to the dimension of the side of the frame, and the length linearly varies with this distance in accordance with a given expression. The dimension of the side of the frame is made equal to the side of the X-ray film holder, used in radiographic inspection.

EFFECT: additional features for determining dimensions of a section of the surface of an X-ray film in a holder, placed on an object, irradiated with an X-ray beam, and their matching with dimensions of the zone of the object, exposed to X-rays at different specific distances from the object to the X-ray emitter.

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