Electron beam moving apparatus for a color cathode ray tube

Details Electron beam moving apparatus for a color cathode ray tube Electron beam moving apparatus for a color cathode ray tube

1979-03-27

1980-11-04

Hubler, Malcolm F.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

313412, H01J 2951

Patent

active

042322839

ABSTRACT:
To provide static convergence correction motion to the outer beam of three in-line electron beams of a color cathode ray tube, a magnetized sphere is located adjacent each outer beam. Each sphere is magnetized across a diameter to produce, for example, a two-pole magnetic field for providing the correction motion. The two-poles are separated along a polar axis. Each sphere is located in a housing which permits rotation of the polar axis of the sphere into alignment with the longitudinal axis of the cathode ray tube and permits rotation of the polar axis out of longitudinal alignment in both horizontal and vertical planes.

REFERENCES:
patent: 2717323 (1955-09-01), Clay
patent: 2834911 (1958-05-01), Nelson
patent: 3290532 (1966-12-01), Lemke et al.
patent: 3793602 (1974-02-01), Lister
patent: 3899761 (1975-08-01), Yamauchi
patent: 3942146 (1976-03-01), LaBelle

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