PROBLEM TO BE SOLVED: To provide an Mo collimator that has a improved yield and sufficient strength.SOLUTION: An Mo collimator of the present invention has a laminate structure formed by laminating Mo boards having a board thickness of 0.02 to 0.3 mm. A plurality of holes having a short side or a diameter of 0.1 to 1.0 mm are provided on the Mo boards, and each of the holes forms a through hole that penetrates from a top face to an under face of the laminate. The Mo collimator comprises an overlapping region where an opening area of a hole of the top face and that of the under face overlap one another in an area ratio of 90 to 100%, and a shifted area where the opening area of a hole of the top face and that of the under face overlap one another in the area ratio of 40 to 70%.COPYRIGHT: (C)2012,JPO&INPIT【課題】 歩留りおよび強度の強いMoコリメータを提供する。【解決手段】 板厚0.02~0.3mmのMo板を積層した積層体構造を有するMoコリメータにおいて、Mo板には短辺または直径が0.1~1.0mmの穴部が複数個設けられており、個々の穴部は積層体の上面から下面まで貫通穴を形成すると共に、上面穴部と下面穴部の開口面積が面積率で90~100%重なる重なり領域と、面積率40~70%重なるズレ領域とを具備することを特徴とする。【選択図】 図1
