PROBLEM TO BE SOLVED: To provide an X-ray imaging apparatus that allows for capturing X-ray images using less X-ray dose by sufficiently suppressing relative displacement between a detector and each grating even in the presence of vibration.SOLUTION: An X-ray imaging apparatus includes a plurality of gratings a detector that detects X-rays emitted by an X-ray generator and passing through the plurality of gratings a first support that supports the plurality of gratings and the detector a second support that supports the X-ray generator and the first support and a first vibration isolating material disposed between the first support and the second support. At least for vibration of the X-rays in a direction perpendicular to an optical axis, a natural frequency of the first vibration isolating material is less than 1/√2 times a frequency of vibration generated by the X-ray generator.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】振動が発生しても、各格子と検出器の相対位置ズレを十分に抑制し、より少ないX線線量でX線像の撮影を可能とするX線撮像装置を提供する。【解決手段】X線撮像装置は、複数の格子と、X線発生部から出射され前記複数の格子を透過したX線を検出する検出器と、前記複数の格子及び前記検出器を支える第1の支持部と、前記X線発生部及び前記第1の支持部を支える第2の支持部と、前記第1の支持部と前記第2の支持部の間に設けられる第1の防振材と、を有する。少なくとも前記X線の光軸に垂直な方向の振動に関して、前記第1の防振材の固有振動数が、前記X線発生部が発生する振動の振動数の1/√2倍よりも低い。【選択図】図1
