Patent ID: 6798130
Filing Date: 2004-09-28
Classification: H01J

Abstract:
A deflection yoke comprising:a pair of saddle-type horizontal deflection coils located symmetrically with respect to a central axis on the opposite sides of a horizontal axis perpendicular to the central axis, individually, and substantially in the shape of a truncated pyramid as a whole; a magnetic core substantially in the shape of a truncated cone located coaxially with the central axis and surrounding the horizontal deflection coils, the magnetic core including a large-diameter end portion and a small-diameter end portion; and a pair of vertical deflection coils wound on the magnetic core, the horizontal deflection coils and the magnetic core being arranged so that a space vf between the large-diameter end portion of the magnetic core and each of the horizontal deflection coils is 3 times to 7 times as wide as a space vr between the small-diameter end portion of the magnetic core and each of the horizontal deflection coils, with respect to the direction of a vertical axis perpendicular to the central axis and the horizontal axis as viewed in the direction of the horizontal axis.