| 摘要 |
An image intensifier tube includes a photocathode ( 20 ) with an active layer ( 52 ) providing an electrical spectral response to photons of light. The photocathode ( 20 ) also includes integral spacer structure ( 42 ) which extends toward and physically touches a microchannel plate ( 22 ) of the image intensifier tube in order to establish and maintain a desirably precise and fine-dimension spacing distance "G" between the photocathode and the microchannel plate. A method of making the photocathode and a method of making the image intensifier tube are described also.
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