Patent ID: 8908829

Claim:
An X-ray imaging apparatus for capturing an image of an object using a phase shift of X-rays due to the detection object, the apparatus comprising: a separating element that spatially separate X-rays generated by an X-ray generator; a first scintillator array including a plurality of first scintillators that are arranged, each of the first scintillators generating first fluorescent light when X-rays separated by the separating element are incident thereon; a second scintillator array including a plurality of second scintillators that are arranged, each of the second scintillators generating second fluorescent light when X-rays that have passed through the first scintillator array are incident thereon, the second fluorescent light having a spectrum different from a spectrum of the first fluorescent light; and a detecting unit configured to detect the first fluorescent light and the second fluorescent light, wherein each of the second scintillators has a fluorescence emission intensity gradient such that an amount of emitted fluorescent light changes in accordance with a change in a position at which the X-rays are incident.