Electric lamp and discharge devices – Cathode ray tube – Beam deflecting means
Patent
1993-04-16
1997-01-28
Brinich, Stephen
Electric lamp and discharge devices
Cathode ray tube
Beam deflecting means
335213, H01J 2970
Patent
active
055980554
ABSTRACT:
A deflection device for use in a color cathode-ray tube, which has a pair of horizontal deflection coils for generating a pincushion-shaped horizontal deflection magnetic field, a pair of vertical deflection coils for generating a barrel-shaped vertical deflection magnetic field. The deflection device also having a pair of correction coils each of which being located at a distance of 10 mm or less from a plane containing the center and vertical axes of the device, a current flowing through each correction coil in synchronism with, and in a direction opposite to, the currents flowing in the horizontal deflection coils. The deflection device may also include a second pair of correcting coils, each of which being located adjacent to the first pair of correcting coils and arranged in a similar arrangement relative to the plane defined by the center and vertical axes.
REFERENCES:
patent: 4233582 (1980-11-01), Abe et al.
patent: 5177399 (1993-01-01), Fujiwara et al.
patent: 5177412 (1993-01-01), Morohashi et al.
patent: 5179319 (1993-01-01), Iwasaki et al.
Akoh Nobuhiko
Fukuda Kumio
Inoue Masatsugu
Shimizu Norio
Takahashi Tohru
Brinich Stephen
Kabushiki Kaisha Toshiba
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