Color picture tube with focusing electrode having electrostatic

Details Color picture tube with focusing electrode having electrostatic Color picture tube with focusing electrode having electrostatic

1982-02-10

1984-05-15

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313414, H01J 2951

Patent

active

044490690

ABSTRACT:
An inline electron gun in a color picture tube is improved by the addition of two slot apertures that are spaced sufficiently close to and outward from the two outer apertures in a portion of a focusing electrode facing a screen grid electrode to cause a distortion of the electrostatic field formed between the two electrodes at the two outer apertures. The electrostatic field distortion causes two outer electron beams to converge toward a center electron beam.

REFERENCES:
patent: 3873879 (1975-03-01), Hughes

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