US 11,729,344 B2
Imaging unit and radiation image acquisition system
Mototsugu Sugiyama, Hamamatsu (JP); Toshiyasu Suyama, Hamamatsu (JP); and Haruki Suzuki, Hamamatsu (JP)
Assigned to HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
Appl. No. 17/310,820
Filed by HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
PCT Filed Dec. 23, 2019, PCT No. PCT/JP2019/050419
§ 371(c)(1), (2) Date Aug. 25, 2021,
PCT Pub. No. WO2020/174850, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 2019-034828 (JP), filed on Feb. 27, 2019.
Prior Publication US 2022/0141397 A1, May 5, 2022
Int. Cl. H04N 5/32 (2023.01); G01T 1/20 (2006.01)
CPC H04N 5/32 (2013.01) [G01T 1/2002 (2013.01); G01T 1/2018 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An imaging unit for acquiring a radiation image of an object conveyed on a predetermined conveying path in a conveying direction, the imaging unit comprising:
a housing having a wall portion placed to face the conveying path and a slit configured to pass radiation and formed in the wall portion;
a scintillator that is installed in the housing and has an input surface to which the radiation passing through the slit is input;
one or a plurality of mirrors that are installed in the housing and reflect scintillation light output from the input surface; and
a line scan camera that is installed in the housing and detects the scintillation light reflected by the mirror, the line scan camera having a scan direction corresponding to the conveying direction and a line direction perpendicular to the scan direction,
wherein the scintillator is placed so as to make the input surface parallel to both the conveying direction and the line direction, and
the mirror is positioned outside an irradiation region connecting a peripheral edge of the slit to the input surface of the scintillator.