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    • 5. 发明授权
    • Reading of Information in radiation emitted from storage media
    • 从存储介质中读出的辐射信息
    • US5898184A
    • 1999-04-27
    • US895196
    • 1997-07-16
    • Werner StahlPeter SchwelleDetlef Brautmeier
    • Werner StahlPeter SchwelleDetlef Brautmeier
    • G02B6/04G03B42/08H04N1/028G03B42/02
    • H04N1/0283G03B42/08H04N1/0281G02B6/04
    • An arrangement for detecting an image on a phosphorescent foil has two light conductors which lead to a common photomultiplier. The light conductors are spaced from one another by a small gap which allows a laser beam to pass between the conductors and excite the foil. The light conductors have flat end faces for the admission of light into the conductors, and the end faces are directed towards the foil as well as the gap. The end faces make an angle of 10 to 30 degrees with the foil. The light conductors are designed so that the greater part of impinging radiation is admitted into and travels the length of a conductor only when the path of the radiation and a normal to the respective end face define an angle which is equal to or less than the acceptance angle of the conductor. Each end face has an edge remote from the gap, and a location at which the laser beam impinges the foil defines a plane with a location on either edge. The impingement location of the laser beam defines a line with each edge location, and each line makes an angle equal to or less than the acceptance angle with a normal to the respective end face. A reflector can be mounted adjacent either edge to reflect light emitted from the foil towards the end faces.
    • 用于检测磷光箔上的图像的装置具有两个导致公共光电倍增管的光导体。 光导体彼此间隔开一个小的间隙,这允许激光束在导体之间通过并激发箔。 光导体具有平坦的端面,用于使光进入导体,并且端面被引向箔以及间隙。 端面与​​箔片成10至30度的角度。 光导体被设计成使得仅当辐射的路径和相应端面的法线限定等于或小于接受的角度时,入射辐射的大部分才允许进入导体的长度 导体角度。 每个端面具有远离间隙的边缘,并且激光束撞击箔片的位置限定了在任一边缘上具有位置的平面。 激光束的冲击位置限定了具有每个边缘位置的线,并且每条线形成等于或小于与相应端面垂直的接受角度的角度。 可以将反射器安装在邻近边缘处以将从箔片发射的光反射到端面。