发明名称 |
X-ray image intensifier tube having a photocathode and a scintillator screen positioned on a microchannel array |
摘要 |
An X-ray image intensifier tube includes a scintillator screen for converting ionizing radiation into light radiation or near-visible radiation, a microchannel array for achieving electron multiplication, and a photoelectrode positioned directly on an input face of the microchannel array. The input face of the microchannel array is coated with an electrically conductive layer which directly contacts the photocathode. The present design eliminates strict spacing requirements between the photocathode and the microchannel array and allows the photocathode and the microchannel array to operate at a single potential rather than requiring separate potentials. The requirement of a separate support for the scintillator screen is also obviated since the scintillator screen is formed on the input face of the microchannel array.
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申请公布号 |
US5319189(A) |
申请公布日期 |
1994.06.07 |
申请号 |
US19930021451 |
申请日期 |
1993.02.23 |
申请人 |
THOMSON TUBES ELECTRONIQUES |
发明人 |
BEAUVAIS, YVES;DE GROOT, PAUL |
分类号 |
H01J29/38;H01J31/50;(IPC1-7):H01J40/14 |
主分类号 |
H01J29/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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