Dynamic focusing electron gun

Details Dynamic focusing electron gun Dynamic focusing electron gun

1993-03-11

1995-04-04

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313449, 315 15, 315382, H01J 2956

Patent

active

054040710

ABSTRACT:
A dynamic focusing electron gun is provided which includes a cathode and first and second grids which collectively form a triode, a plurality of electrodes for forming an auxiliary lens, and an anode installed adjacent to the final electrode of the auxiliary lens for forming a main lens. Electron beam passing holes are formed in the electrodes of the auxiliary lens so that an electron beam is repeatedly and alternately deformed in the sequence of the vertically-elongated and then horizontally-elongated (or horizontally-elongated and then vertically-elongated) shapes, constituting more than two quadrupole lenses of opposing polarities.

REFERENCES:
patent: 5023508 (1991-06-01), Park
patent: 5025189 (1991-06-01), Son
patent: 5281896 (1994-01-01), Bae et al.

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