| 摘要 |
PROBLEM TO BE SOLVED: To provide a radiographic device having a simple configuration capable of efficiently collimating generated radiation, capable of suppressing luminance reduction regardless of a size of a subject, and capable of downsizing the device.SOLUTION: A radiographic device includes: a radiation source 1; a radiation reflection structure 3 having at least three radiation reflection substrates 11 arranged with a clearance therebetween and configured to reflect radiation incident on a plurality of radiation paths interposed between the radiation reflection substrates 11, by the radiation reflection substrates 11 on both sides of the radiation paths, and collimate and emit the radiation from the radiation paths; a radiation detector 4; and an image construction part for constructing an image of a subject 7 according to intensity of radiation emitted from radiation paths, penetrating the subject 7 and detected at the radiation detector 4. If one end face of the radiation reflection structure 3 is an entrance of radiation, and the other end face is an exit of the radiation, a pitch of the radiation reflection substrates 11 at the exit is larger than a pitch of the entrance. |
