Patent Number: 
Section: claims

1. A grid for absorbing electromagnetic radiation comprising: a plurality of comb elements,  each comb element of the plurality of comb elements having a rigid and substantially flat base upon which comb lamellae extend transversely,  the comb lamellae having a height perpendicular to the base, wherein  the plurality of comb elements are arranged such that the lamellae of each comb element abuts a flat surface of the flat base of an adjacent comb element to form a grid structure having apertures having an interior dimension that equals the height of the lamellae. 2. A grid for absorbing electromagnetic radiation comprising: a plurality of comb elements,  each comb element of the plurality of comb elements having a rigid and substantially flat base upon which comb lamellae extend transversely on each of two opposing surfaces of the flat base,  the comb lamellae having a height perpendicular to the base, and  a plurality of rigid and substantially flat separating elements, wherein  the plurality of comb elements are arranged such that the lamellae of each comb element abuts a flat surface of a corresponding element of the plurality of separating elements to form a grid structure having apertures having an interior dimension that equals the height of the lamellae. 3. A grid as claimed in  claim 1 , characterized in that claim 1 the lamellae form a comb structure of the plurality of comb elements that is focused on a focal spot. 4. A grid as claimed in  claim 1 , characterized in that claim 1 the plurality of comb elements are secured in a frame by way of grooves at edges of the frame. 5. A grid as claimed in  claim 4 , characterized in that claim 4 the plurality of comb elements are glued in the grooves. 6. A grid as claimed in  claim 1 , characterized in that claim 1 the plurality of comb elements absorb X-rays. 7. A focused detection system comprising: a detector that is configured to detect X-rays, and  a grid for the absorption of X-rays that includes:  a plurality of comb elements,  each comb element of the plurality of comb elements having a rigid and substantially flat base upon which comb lamellae extend transversely,  the comb lamellae having a height perpendicular to the base, wherein  the plurality of comb elements are arranged such that the lamellae of each comb element abuts a flat surface of the flat base of an adjacent comb element to form a grid structure having apertures having an interior dimension that equals the height of the lamellae, such that X-rays that enter the apertures substantially normal to the grid are detected by the detector, and X-rays that enter the apertures at a non-normal angle to the grid are absorbed by the grid. 8. An X-ray apparatus which includes a grid which is arranged in front of a detector in order to absorb X-rays, wherein the grid includes:  a plurality of comb elements,  each comb element of the plurality of comb elements having a rigid and substantially flat base upon which comb lamellae extend transversely,  the comb lamellae having a height perpendicular to the base, wherein  the plurality of comb elements are arranged such that the lamellae of each comb element abuts a flat surface of the flat base of an adjacent comb element to form a grid structure having apertures having an interior dimension that equals the height of the lamellae, such that X-rays that enter the apertures substantially normal to the grid are detected by the detector, and X-rays that enter the apertures at a non-normal angle to the grid are absorbed by the grid. 9. A method of manufacturing a grid that is configured to absorb electromagnetic radiation, comprising: providing a plurality of comb elements,  each comb element of the plurality of comb elements having a rigid and substantially flat base upon which comb lamellae extend transversely,  the comb lamellae having a height perpendicular to the base, and  arranging the plurality of comb elements such that the lamellae of each comb element abuts a flat surface of the flat base of an adjacent comb element to form a grid structure having apertures having an interior dimension that equals the height of the lamellae. 10. A method of manufacturing a grid that is configured to absorb electromagnetic radiation, comprising: providing a plurality of comb elements,  each comb element of the plurality of comb elements having a rigid and substantially flat base upon which comb lamellae extend transversely on each of two opposing surfaces of the base,  the comb lamellae having a height perpendicular to the base,  providing a plurality of rigid and substantially flat separating elements,  arranging the plurality of comb elements such that the lamellae of each comb element abuts a flat surface of a corresponding element of the plurality of separating elements, to form a grid structure having apertures having an interior dimension that equals the height of the lamellae. 11. A grid as claimed in  claim 2 , characterized in that claim 2 the lamellae form a comb structure of the plurality of comb elements that is focused on a focal spot. 12. A grid as claimed in  claim 2 , characterized in that claim 2 the plurality of comb elements and separating elements are secured in a frame by way of grooves at edges of the frame. 13. A grid as claimed in  claim 12 , characterized in that claim 12 the plurality of comb elements and separating elements are glued in the grooves. 14. A grid as claimed in  claim 2 , characterized in that claim 2 the plurality of comb elements absorb X-rays. 15. A focused detection system comprising: a detector that is configured to detect X-rays, and  a grid for the absorption of X-rays that includes:  a plurality of comb elements,  each comb element of the plurality of comb elements having a rigid and substantially flat base upon which comb lamellae extend transversely on each of two opposing surfaces of the flat base,  the comb lamellae having a height perpendicular to the base, and  a plurality of rigid and substantially flat separating elements, wherein  the plurality of comb elements are arranged such that the lamellae of each comb element abuts a flat surface of a corresponding element of the plurality of separating elements to form a grid structure having apertures having an interior dimension that equals the height of the lamellae, such that X-rays that enter the apertures substantially normal to the grid are detected by the detector, and X-rays that enter the apertures at a non-normal angle to the grid are absorbed by the grid. 16. An X-ray apparatus which includes a grid which is arranged in front of a detector in order to absorb X-rays, wherein the grid includes:  a plurality of comb elements,  each comb element of the plurality of comb elements having a rigid and substantially flat base upon which comb lamellae extend transversely on each of two opposing surfaces of the flat base,  the comb lamellae having a height perpendicular to the base, and  a plurality of rigid and substantially flat separating elements, wherein  the plurality of comb elements are arranged such that the lamellae of each comb element abuts a flat surface of a corresponding element of the plurality of separating elements to form a grid structure having apertures having an interior dimension that equals the height of the lamellae, such that X-rays that enter the apertures substantially normal to the grid are detected by the detector, and X-rays that enter the apertures at a non-normal angle to the grid are absorbed by the grid. 17. An X-ray apparatus according to  claim 16 , wherein claim 16 the height of the lamellae is tapered along a transverse axis of the base. 18. An X-ray apparatus according to  claim 8 , wherein claim 8 the height of the lamellae is tapered along a transverse axis of the base. 19. A grid according to  claim 1 , wherein claim 1 the height of the lamellae is tapered along a transverse axis of the base. 20. A grid according to  claim 2 , wherein claim 2 the height of the lamellae is tapered along a transverse axis of the base.