DIFFRACTION GRATING FOR X-RAY PHASE DIFFERENCE IMAGE CAPTURE DEVICE, X-RAY EMISSION UNIT FOR X-RAY PHASE DIFFERENCE IMAGE CAPTURE DEVICE, AND X-RAY PHASE DIFFERENCE IMAGE CAPTURE DEVICE

摘要

This x-ray phase difference image capture device diffraction grating (20) comprises a first grating (22), further comprising a plurality of first grating parts (22a) which are formed at a first grating period (P_k), and a second grating (23), further comprising a plurality of second grating parts (23a) which are formed at a second grating period (P_k+1) which differs from the first grating period, said second grating (23) being layered upon the first grating such that spaces between the first grating parts are connected to spaces between the second grating parts.