PROBLEM TO BE SOLVED: To provide techniques for suppressing increase in weight and deterioration in image quality due to an unnecessary scattered ray, in a radiation imaging device.SOLUTION: A radiation imaging device includes the following in a housing including an incidence surface which a radiation enters: a first scintillator layer which absorbs the radiation so as to convert it into light an imaging panel which is provided between the incidence surface and the first scintillator layer and which converts the incident radiation into an electric signal for generating a radiation image and a light shielding part which is provided between the imaging panel and the first scintillator layer and which blocks the light from the first scintillator layer to the imaging panel.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】放射線撮像装置において、重量の増加を抑制し、かつ不要な散乱線による画質の劣化を抑制する技術を提供する。【解決手段】放射線が入射する入射面を有する筐体内に、放射線を吸収し、光に変換する第1のシンチレータ層と、入射面と第1のシンチレータ層との間に配され、入射した放射線を放射線画像の生成のための電気信号に変換する撮像パネルと、撮像パネルと第1のシンチレータ層との間に配され、第1のシンチレータ層から撮像パネルへの光を遮る遮光部と、を含む。【選択図】図1