Electron gun for cathode ray tube

Details Electron gun for cathode ray tube Electron gun for cathode ray tube

1990-05-08

1993-04-13

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, H01J 2950

Patent

active

052026043

ABSTRACT:
An electron gun for cathode ray tube, wherein the outer beam passing holes of the anode have an elongated slot which has a pair of opposingly facing semi-circular arcs having a radius as large as the radius of the outer beam passing holes of the focus electrode, and the innermost arc portions of the outer beam passing holes of the anode correspond with the arcs of the outer beam passing holes of the focus electrode. According to the present invention, degradation of picture quality due to differences in focusing voltages is prevented, and assembly of the electron gun with precision is rendered easier.

REFERENCES:
patent: 4581560 (1986-04-01), Shirai et al.
patent: 4599534 (1989-07-01), Shirai et al.
patent: 4622491 (1989-11-01), Izumida et al.
patent: 4812706 (1989-03-01), Baudry et al.
patent: 4877998 (1989-10-01), Maninger et al.

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