Electron gun for color cathode ray tube

Details Electron gun for color cathode ray tube Electron gun for color cathode ray tube

1990-05-08

1991-08-13

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, H01J 2951, H01J 2962

Patent

active

050399063

ABSTRACT:
An electron gun for a cathode ray tube which comprises a triode, a bipotential main lens, and a unipotential prefocus lens, wherein the diameters of the beam passing holes of the middle electrode of the unipotential prefocus lens are greater than the diameters of the beam passing holes of the electrodes which are disposed upstream and downstream of the middle electrode, and the outer beam passing holes of the middle electrode are disposed outwardly eccentrically relative to the outer beam passing holes of the two electrodes which are disposed upstream and downstream of the middle electrode.

REFERENCES:
patent: 4528476 (1985-07-01), Alig
patent: 4833365 (1989-05-01), Shirai et al.

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