Radiation detector has: substrate, and the multiple pixels accumulated to the charge generated according to the light from radioactive ray transformation Hou are formed in the pixel region of flexible substrate； Transform layer, is arranged in the face for being provided with the pixel region of the substrate, and the radioactive ray are transformed to light； With enhancing substrate, the face of the side opposed with the face of the substrate-side in the transform layer is set, comprising the material with yield point, rigidity is higher than the substrate.放射線檢測器具備：基板，在可撓性的基材的像素區域形成有對根據從放射線變換後的光而產生的電荷進行蓄積的多個像素；變換層，設置在所述基材的設置有所述像素區域的面，將所述放射線變換為光；和增強基板，設置在所述變換層中的與所述基板側的面對置的一側的面，包含具有降伏點的材料，剛性比所述基材高。
