Cathode ray tube apparatus

Details Cathode ray tube apparatus Cathode ray tube apparatus

1983-12-08

1989-05-16

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

H01J 2948

Patent

active

048313092

ABSTRACT:
An in-line type cathode ray tube apparatus, is improved to obtain less aberration of beam spots by shaping the electron beam passing apertures (15a, 15b, 15c) in the control grid (11) and those in the accelerating grid (12) into horizontally oblong elliptic shapes, and providing a horizontally oblong electrode means (18) having a rectangle shape active space on the accelerating grid (12) at its down stream side of the electron beam.

REFERENCES:
patent: 3984723 (1976-10-01), Gross et al.
patent: 4242613 (1980-12-01), Brambring et al.
patent: 4251747 (1981-02-01), Burdick
patent: 4443736 (1984-04-01), Chen
patent: 4473775 (1984-09-01), Hosokoshi et al.

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