| 摘要 |
PROBLEM TO BE SOLVED: To provide an X-ray Talbot photographing apparatus in which the plurality of gratings such as a first grating and a second grating are not damaged and a plurality of gratings can be accurately curved to suitably transmit radiation without causing vignetting.SOLUTION: An X-ray Talbot photographing apparatus 1 comprises a holder 30 which holds a plurality of gratings 20, 21, 22, wherein the holder 30 includes a receiving unit 31 including a receiving surface 31B with a curve and a pressing unit 32 including a pressing surface 32B with a curve, each grating is held between the receiving surface 31B of the receiving unit 31 and the pressing surface 32B of the pressing unit 32 of the holder 30 and bent in an arc shape with a point of a radiation source 2 as a center, an elastic member 33 is positioned between one surface R of the grating and the pressing surface 32B or the opposite surface r of the grating and the receiving surface 31B, and openings 31A, 32A, 33A are provided in the receiving unit 31 and the pressing unit 32 of the holder and the elastic member 33, respectively so as not to block the radiation.SELECTED DRAWING: Figure 5 |
