Patent ID: 7005788

Claim:
Deflection yoke for a cathode-ray tube comprising a pair of horizontal deflection coils and a pair of vertical deflection coils, the two pairs being isolated one from the other by a separator, a ferrite ring at least partly covering the deflection coils and having a flared front part, the deflection yoke comprising, in its front region, at least one pair of magnetic correction means to modify locally the magnetic field created in the said front region by the deflection coils, wherein the magnetic means are arranged in the space such that, for a plane containing the longitudinal axis of the deflection yoke and the axis of symmetry of a magnetic means, and for the point M of the plane corresponding to the point the values of whose coordinates M y and M z along the Y and Z axes are the minimum values of the coordinates along these same axes of the points of intersection of the said means with the plane, the intersection of the ring with the plane is at least partly in its front part, located outside the region delimited by a first half line passing through M and perpendicular to Z, and a second half line passing through M and making an angle of 45 ° with the first half line.