| 摘要 |
<P>PROBLEM TO BE SOLVED: To sufficiently perform optical reset with respect to a photodetector substrate, to suppress image blur of a radiographic image, and further to improve sensitivity of the photodetector substrate with respect to visible light. <P>SOLUTION: In radiographic image photographing apparatuses (20, 20A to 20D), the photodetector substrate (72), a scintillator (74), a switching filter (76), and a resetting light source (78) are arranged in this order. When the switching filter (76) is made permeable to resetting light from the resetting light source (78), the switching filter (76) allows the photodetector substrate (72) to be irradiated with the resetting light through the scintillator (74), whereas when the switching filter is made impermeable to the resetting light, the switching filter reflects at least visible light converted from radiation by the scintillator (74) toward the photodetector substrate (72). <P>COPYRIGHT: (C)2012,JPO&INPIT |
