安然无恙造句
专利名称：SEGMENTED GATE DRIVE FOR DYNAMIC BEAM SHAPE CORRECTION IN FIELD
EMISSION CATHODES
thief发明人：JAMISON, Keith, D.,PATTERSON, Donald, E.申请号：US2000035485西安成人教育
申请日：20001228
深圳翻译
公开号：WO01/050491P1
leonardcohen公开日：
shock wave
underscore
20010712
青少年游学
专利内容由知识产权出版社提供
parfun
摘要：A field emission cathode providing for dynamic adjustment of beam shape is disclod. Beam shape adjustment is accomplished by gmenting the gate electrode (17) of a gated field emission cathode and independently driving the various gate gments to form the desired beam shape. Segments can be turned on and off as the beam is deflected allowing the dynamic correction of aberrations in the beam. A focus lens (32) can be placed on the gated cathode to produce a parallel electron beam. In addition, a hollow cathode can be produced to minimize space charge repulsion in a beam.
申请人：EXTREME DEVICES INCORPORATED
地址：US
国籍：US
代理机构：COOKE, Claude, E., Jr.
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