| 摘要 |
PURPOSE:To obtain a compact radiation image detector by providing a solid- state image sensing device so that the plane of incidence of light is opposed to the light output end face, and by lessening the length in the direction of incidence of light of an optical fiber plate. CONSTITUTION:CCD 2 is provided on the light output end face of an optical fiber plate 3 having the light output end face and light incidence end face 31 which intersect the direction of waveguide of light respectively and are orthogonal substantially to each other. Since the end face 31 is coated with a material having a scintillation function, the light generated by a radiation falling on the end face 31 is propagated in the direction of waveguide of the light and, therefore, it is emitted from the light output end face and cast on the plane of incidence of light of the CCD 2. Since the plane of incidence of light of the CCD 2 and the end face 31 are orthogonal substantially to each other, the radiation falling vertically substantially on the end face 31 advances straight in parallel practically to the plane of incidence of light of the CCD 2 and, therefore, the radiation does not fall on the plane of incidence of light of the CCD 2. Besides, the radiation is not guided either by the plate 3 coupling the plane of incidence of light of the CCD 2 with the end face 31 optically.
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