CRT generating three inline beams and having shunts for weakenin

Details CRT generating three inline beams and having shunts for weakenin CRT generating three inline beams and having shunts for weakenin

1978-02-24

1980-04-01

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, H01J 2976, H01J 2951

Patent

active

041963709

ABSTRACT:
An inline electron gun includes means for weakening the effect of a portion of the horizontal magnetic deflection field on the center electron beam and for strengthening the effect of a portion of the vertical magnetic deflection field on the center electron beam. The means includes magnetic shield members completely surrounding the paths of the outer beams. Each of the members has a portion that crosses the plane of the co-planar electron beam paths that is closer to the center beam path than to the outer beam paths. In a preferred embodiment, large shunts surrounding the outer beams are offset eccentrically toward the center beam relative to the outer beams.

REFERENCES:
patent: 3873879 (1975-03-01), Hughes
patent: 3892996 (1975-07-01), Morrell et al.
patent: 4057747 (1977-11-01), Hamano
patent: 4142131 (1979-02-01), Ando et al.

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