Electron gun for cathode-ray tube

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

1994-04-22

1995-01-24

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313448, 313449, H01J 2948

Patent

active

053845129

ABSTRACT:
In an electron gun for a cathode-ray tube according to this invention, a quadrupole lens having a small spherical aberration and an asymmetrical lens are combined to properly focus an electron beam, thereby greatly reducing the size of a beam spot formed on a target on a screen.

REFERENCES:
patent: 4701677 (1987-10-01), Ashizaki et al.
patent: 4814670 (1989-03-01), Suzuki et al.
patent: 4851741 (1989-07-01), Shirai et al.
patent: 4945284 (1990-07-01), Shimoma et al.
patent: 5015910 (1991-05-01), Takahashi et al.
patent: 5034653 (1991-07-01), Cho et al.

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