| 摘要 |
PURPOSE:To enable detection of the X-ray image having a wide range of intensity with high contrast by using a material which is isomerized by irradiation of light and is thereby changed in emission efficiency for a material for converging the X-ray image to light. CONSTITUTION:An X-ray is irradiated to a specimen 1 and is irradiated on X- ray sensitive paper 2. The X-ray is converted to light by the paper 2 to generate spectral light. The light is made incident to an adjacent photoisomerized luminous film 3. The paper 2 and the film 3 may be united to one body. The film 3 is the film which contains a compd. like cis-perinaphthothioindigo having 0 or extremely low light emission efficiency, is isomerized by irradiation of specific light and has the nature to change for a compd. having extremely high emission efficiency, for example, trans-perinaphthothioindigo. The photoisomerized luminous film is so selected that the emission spectra of the paper 2 and the absorption spectra of said film before use are in the same wavelength range. |
