Cathode ray tube apparatus with quadrupole electrode structure

Details Cathode ray tube apparatus with quadrupole electrode structure Cathode ray tube apparatus with quadrupole electrode structure

1989-01-11

1989-12-12

Groody, James J.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313449, 315 1, 315 14, 315 15, 315382, H01J 2946

Patent

active

048869996

ABSTRACT:
A cathode ray tube apparatus comprises three cathodes arranged in line with each other in a first direction for emission of respective electron beams therefrom, a focusing electrode having first to third apertures defined therein for the passage of the respective electron beams therethrough, a quadrupole electrode structure including first to third quadrupole electrodes one for each electron beam, each of the quadrupole electrode being comprised of a pair of horizontal electrode pieces spaced a predetermined distance from each other in a second direction perpendicular to the first direction and positioned upwardly and downwardly, respectively, with respect to the associated electron beam, and a pair of vertical electrode pieces spaced a predetermined distance from each other in a direction aligned with the first direction and positioned leftwards and rightwards with respect to such associated electron beam, and a power source circuit for applying a predetermined voltage to the quadrupole electrode structure.

REFERENCES:
patent: 3949262 (1976-04-01), Ohkoshi et al.
patent: 3961223 (1976-06-01), Ray et al.
patent: 4388619 (1983-06-01), Beck
patent: 4626738 (1986-12-01), Gerlach
patent: 4701677 (1987-10-01), Ashizaki et al.
patent: 4772827 (1988-09-01), Osakabe et al.
patent: 4814670 (1989-03-01), Suzuki et al.

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