Radiation image conversion panel, scintillator panel, and radiation image sensor

A scintillator panel comprising:

• an aluminum substrate comprising a radiation receiving surface of the scintillator panel;
• an aluminum oxide layer formed on a surface of the aluminum substrate other than the radiation receiving surface;
• a chromium layer covering the aluminum oxide layer, at least a portion of the aluminum oxide layer being positioned between the aluminum substrate and the chromium layer;
• a metal film, provided on the chromium layer, having a radiation transparency and a light reflectivity, at least a portion of the chromium layer being positioned between the aluminum oxide layer and the metal film;
• an oxide layer covering the metal film and having a radiation transparency and a light transparency, at least a portion of the metal film being positioned between the chromium layer and the oxide layer;
• a protective film covering the oxide layer and having a radiation transparency and a light transparency, at least a portion of the oxide layer being positioned between the metal film and the protective film;
• and
• a scintillator provided on the protective film, the scintillator comprising a light emitting surface of the scintillator panel, and at least a portion of the protective film being positioned between the oxide layer and the scintillator.

A radiation image sensor comprising:

• a radiation image conversion panel including an aluminum substrate;
• an aluminum oxide layer formed on a surface of the aluminum substrate;
• a chromium layer covering the aluminum oxide layer, at least a portion of the aluminum oxide layer being positioned between the aluminum substrate and the chromium layer;
• a metal film, provided on the chromium layer, having a light reflectivity, at least a portion of the chromium layer being positioned between the aluminum oxide layer and the metal film;
• an oxide layer covering the metal film and having a light transparency, at least a portion of the metal film being positioned between the chromium layer and the oxide layer;
• a protective film covering the oxide layer and having a light transparency, at least a portion of the oxide layer being positioned between the metal film and the protective film;
• and a converting part provided on the protective film and adapted to convert a radiation image, the converting part comprising a light emitting surface of the radiation image conversion panel, and at least a portion of the protective film being positioned between the oxide layer and the converting part;
• and
• an image pickup device for converting light emitted from the light emitting surface of the converting part of the radiation image conversion panel into an electric signal.