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    • 3. 发明公开
    • PHOTOMULTIPLIER
    • PHOTOVERVIELFACHER
    • EP1369900A4
    • 2008-02-20
    • EP02712471
    • 2002-02-22
    • HAMAMATSU PHOTONICS KK
    • KATO HISAKIKAWAI HIDETO
    • H01J43/04H01J43/06H01J43/18H01J43/22H01J43/28
    • H01J43/28H01J43/045H01J43/06H01J43/18H01J43/22
    • In a photomultiplier, focusing pieces of a focusing electrode are formed with sufficient height that the photocathode in the adjacent channels cannot be viewed from the first and second stage dynodes of each channel in order to prevent light reflected from the first and second stage dynodes from returning to the adjacent channels. This construction prevents the photocathode from emitting undesired electrons, thereby suppressing crosstalk. Further, by arranging condensing lenses on the outer surface of a light-receiving faceplate in correspondence with each channel, light is reliably condensed in each channel. Further, an oxide film formed over the surface of the focusing pieces prevents the reflection of light off the focusing pieces.
    • 光电倍增管保持聚焦电极的每个聚焦片高到使得相邻通道的光电面不能从每个通道的第一和第二级二极管中透过以防止从第一和第二级二极管反射的光返回到相邻通道 。 因此,停止从光电面发射无用的电子以抑制光的串扰。 另外,通过对应于通道,聚光透镜布置在光接收面板的外表面上。 此外,通过在会聚电极的每个会聚面的表面上形成氧化物膜,从聚焦电极的每个聚焦片的光反射被切除。