Edge effect elimination and beam forming designs for field emitt

Details Edge effect elimination and beam forming designs for field emitt Edge effect elimination and beam forming designs for field emitt

1980-06-02

1982-08-17

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

Discharge devices having a multipointed or serrated edge...

313336, 313353, 313302, H01J 102

Patent

active

043451810

ABSTRACT:
The edge effect elimination and beam forming device uses a field effect electron emitter with a conductive material disposed over selected portions of the emitting fibers of the emitter, in electrical contact with the fibers, and in the same plane as the fiber emitting points for eliminating electron emission in the area where the conductive material is placed. For edge effect elimination the conductive material is placed over the outer emitting fibers in a continuous path or ring. For additional beam shaping other segments or sections of the emitter surface may have conductive material deposited thereon to eliminate emission from that area, thereby shaping the beam emitted from the uncovered emitting points.

REFERENCES:
patent: 3671798 (1972-06-01), Lees
patent: 3735186 (1973-05-01), Klopfer et al.
patent: 3745402 (1973-07-01), Shelton et al.
patent: 3746905 (1973-07-01), Shelton et al.
patent: 3783325 (1974-01-01), Shelton
patent: 3840955 (1974-10-01), Hagood et al.
patent: 3859550 (1975-01-01), Hagood et al.

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