Invention Grant
US5776538A Method of manufacture for microchannel plate having both improved gain and signal-to-noise ratio 失效
具有改进的增益和信噪比的微通道板的制造方法

Method of manufacture for microchannel plate having both improved gain
and signal-to-noise ratio
Abstract:
Microchannel plates for use in image intensifiers and night vision devices having both improved gain and signal-to-noise ratio are provided. The microchannel plates disclosed herein provide an initial electron impact area having a surface electron-emissivity coefficient greater than one (1) that is not occluded by low electron-emissivity conductive coatings. In one embodiment angulated deposition of a coating material is used to provide a high electron-emissivity initial electron-impact area while in another embodiment nonmetallic electrodes provide increased amplification of a signal electron. Besides improving gain and sensitivity, the microchannel plates of the present invention provide a higher signal-to-noise ratio, better resolution, high open area ratios and are significantly more cost effective to produce.
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