Cathode ray tube which improves deflection aberration

Details Cathode ray tube which improves deflection aberration Cathode ray tube which improves deflection aberration

1992-07-13

1993-04-27

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313414, 335211, 335213, H01J 2976

Patent

active

052065596

ABSTRACT:
In a cathode ray tube, a first pair of permanent magnet pieces are arranged along a horizontal direction and fixed on an end portion of a deflection unit at an electron gun side in such a manner that poles of one of the magnet pieces face the other poles of the other magnet piece. A second pair of permanent magnet pieces are arranged along a vertical direction, separated from the first pair of permanent magnet pieces by being fixed on a neck portion, forward of the electron gun assembly, and in such a manner that poles of one of the, magnet pieces face the other poles of the other magnet piece.

REFERENCES:
patent: 4197487 (1980-04-01), Takenaka et al.
patent: 4547707 (1985-10-01), Yabase
patent: 4659961 (1987-04-01), Naiki
patent: 4782264 (1988-11-01), Yamazaki et al.
patent: 4818919 (1989-04-01), Kobayashi et al.
Hidenori Takita, "Deflector", Patent Abstracts of Japan, Sep. 5, 1987, vol. 11, No. 275, p. 85 E 537.
Osamu Jonosu, "Deflection Yoke", Patent Abstracts of Japan, Mar. 10, 1988, vol. 12, No. 77 p. 136 E 589.

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