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    • 5. 发明申请
    • X-RAY TUBE HAVING A DUAL GRID AND DUAL FILAMENT CATHODE
    • 具有双网和双层阴极的X射线管
    • US20160217965A1
    • 2016-07-28
    • US14607942
    • 2015-01-28
    • VARIAN MEDICAL SYSTEMS, INC.
    • Bradley D. Canfield
    • H01J35/04H01J9/18H01J35/06H01J9/04
    • H01J35/045H01J9/042H01J9/18H01J35/06H01J35/14H01J2235/06H01J2235/068
    • A cathode head can include: a first electron emitter filament having a first size; a first grid pair defining walls of a first filament slot having the first filament therein, each grid member of the first grid pair being electronically coupled to different voltage sources; a second electron emitter filament; and a second grid pair defining walls of a second filament slot having the first electron emitter therein, each grid member of the second grid pair being electronically coupled to different voltage sources. The first grid pair can have a first and second grid members; and the second grid pair can have the second grid member and a third grid member. The first grid member and third grid member are electronically coupled to the same voltage source and the second grid member being electronically coupled to a different voltage source.
    • 阴极头可以包括:具有第一尺寸的第一电子发射器灯丝; 第一格栅对,其限定其中具有第一细丝的第一细丝槽的壁,所述第一栅格对的每个栅格元件电耦合到不同的电压源; 第二电子发射极; 以及限定其中具有第一电子发射体的第二灯丝槽的壁的第二栅极对,所述第二栅极对的每个栅极元件电耦合到不同的电压源。 第一个网格对可以具有第一和第二网格成员; 并且第二格栅对可以具有第二格栅构件和第三格栅构件。 第一格栅构件和第三格栅构件电耦合到相同的电压源,并且第二格栅构件电耦合到不同的电压源。