Patent ID: 8525120

Claim:
A method of manufacturing a radiation measuring device which includes a rear member including a scintillator material for detecting β ray, a light emitting film provided on an upper side of the rear member, and a light detection unit which detects light emitted from a rear side of the light emitting film, the method comprising a transfer step of transferring the light emitting film from a transfer sheet including the light emitting film to the upper side of the rear member, in which it is not necessary to have the light emitting film exist alone, wherein the light emitting film includes: a protective layer through which α ray and β ray are transmitted; a light tight layer which is provided on a rear side of the protective layer, transmits α ray and β ray, and prevents transmission of light; and a light emitting layer having a thickness of approximately 2-3 μm which is provided on a rear side of the light tight layer and includes a scintillator material having a particle diameter of 1 μm or less for detecting α ray, which emits light when the α ray enters the scintillator material, and in the transfer step, the light emitting film serving as a transfer film is adhered to an upper side of the rear member and is simultaneously separated from the transfer sheet.