Patent Number: 054835720
Section: claims

1. An x-ray apparatus comprising a carrier supporting an x-ray source for producing an x-ray beam, an x-ray detector facing the x-ray source and an adjustable absorption filter which is arranged between the x-ray source and the x-ray detector, the carrier posture being variable to alter orientation of the x-ray beam path, characterized in that the x-ray examination apparatus is provided with filter-control means for accepting a posture of the carrier and furnishing a position of the absorption filter so as to control adjustment of the absorption filter in dependence upon the posture of the carrier. 2. An x-ray examination apparatus as claimed in claim 1, characterized in that the filter-control means comprises a memory device for storing pairs of position data, a pair consisting of a position data of the absorption filter and a posture of the carrier. 3. An x-ray apparatus as claimed in claim 1, characterized in that the filter-control means is arranged to furnish a translation of the absorption filter with respect to the x-ray beam path from said posture of the carrier. 4. An x-ray apparatus as claimed in claim 1, characterized in that absorption filter is rotatable and comprises an x-ray absorbing part and an x-ray transmitting part and that the filter-control means is arranged to furnish an orientation of the absorption filter with respect to an axis of rotation of the absorption filter. 5. An x-ray examination apparatus as claimed in claim 2, characterized in that the memory device is arranged to store a plurality of sets of said pairs of position data, each set corresponding to a class of objects to be examined. 6. An x-ray apparatus as claimed in claim 2, characterized in that the filter-control means is arranged to furnish a translation of the absorption filter with respect to the x-ray beam path from said posture of the carrier. 7. An x-ray apparatus as claimed in claim 5, characterized in that the filter-control means is arranged to furnish a translation of the absorption filter with respect to the x-ray beam path from said posture of the carrier. 8. An x-ray apparatus as claimed in claim 2, characterized in that absorption filter is rotatable and comprises an x-ray absorbing part and an x-ray transmitting part and that the filter-control means is arranged to furnish an orientation of the absorption filter with respect to an axis of rotation of the absorption filter. 9. An x-ray apparatus as claimed in claim 5, characterized in that absorption filter is rotatable and comprises an x-ray absorbing part and an x-ray transmitting part and that the filter-control means is arranged to furnish an orientation of the absorption filter with respect to an axis of rotation of the absorption filter.