A radiation image sensor comprises (1) an image sensor 1 having a plurality
of light receiving elements arranged in one or two dimensionally, (2) scintillator
2 having columnar structure formed on the light-receiving surface of this
image sensor 1 to convert radiation into light that can be detected by the
image sensor 1, (3) a protective film 3 formed so as to cover and
adhere to columnar structure of scintillator 2, (4) a frame 6 disposed
around the scintillator to set separation distance from the scintillator and fix
the protective film onto the image sensor, and (5) a radiation-transmittable plate
4 fixed opposite to the image sensor 1 by the frame 6 to sandwich
the protective film 3 therebetween.
