PROBLEM TO BE SOLVED: To provide a grid without a defect such as a void and a gap inside X-ray absorption parts.SOLUTION: X-ray absorption parts 24 are formed by filling the inside of grooves 27a provided in an X-ray transmissive substrate 27 composing an X-ray transmission part 25 with an X-ray absorber made of a metal having a melting point lower than a temperature at which a grid structure composed of the X-ray absorption parts 24 and the X-ray transmission part 25 may be deformed. When a defect such as a void 34 and a gap 35 is produced inside the X-ray absorption parts 24, the defect such as the void 34 and the gap 35 is eliminated by melting the X-ray absorption parts 24 and a recess 24a produced by the defect elimination is re-filled with the X-ray absorber.COPYRIGHT: (C)2012,JPO&INPIT【課題】X線吸収部内にボイドやシム等の欠陥が無いグリッドを提供する。【解決手段】X線透過部25を構成するX線透過性基板27に設けられた溝27a内に、X線吸収材を充填してX線吸収部24を形成する際に、X線吸収部24及びX線透過部25からなるグリッド構造が変形する可能性がある温度よりも低い融点を有する金属からなるX線吸収材を充填する。X線吸収部24内にボイド34やシム35等の欠陥が生じている場合には、X線吸収部24を溶融してボイド34やシム35等の欠陥を修復し、欠陥修復により生じた凹部24a内にX線吸収材を補充する。【選択図】図4
