公开(公告)号：US5847503A

公开(公告)日：1998-12-08

申请号：US942525

申请日：1997-10-02

申请人： Bruno Francis Roussel ,  Alain Dumesnil

发明人： Bruno Francis Roussel ,  Alain Dumesnil

IPC分类号： H01J29/76 ,  H01J29/70 ,  H01F7/00 ,  H01H1/00 ,  H01H5/00

CPC分类号： H01J29/762 ,  H01J2229/7033

摘要： A deflection device for a cathode-ray tube with three coplanar guns, comprising a pair of horizontal deflection coils and a pair of vertical deflection coils, each horizontal deflection coil having a main deflection winding extending over the length of the deflection device, and an auxiliary deflection winding. Each main deflection winding has a front portion and a rear portion. The auxiliary deflection winding is disposed in the front portion of the main deflection winding and is arranged to generate a magnetic field opposed to a field of the main deflection winding. Each of the auxiliary windings has conductors arranged laterally about a mean angle from a horizontal deflection axis, the mean angle varying as a function of the position of the conductors along a longitudinal axis of the deflection device such that, in the front portion of each of the main deflection windings of the pair of horizontal deflection coils, an amplitude of the third-order harmonic of the Fourier series decomposition of the angular distribution of the ampere-turn density is substantially equal to or greater than that of the fundamental.

摘要翻译： 一种用于具有三个共面枪的阴极射线管的偏转装置，包括一对水平偏转线圈和一对垂直偏转线圈，每个水平偏转线圈具有在偏转装置的长度上延伸的主偏转绕组，以及辅助 偏转绕组。 每个主偏转绕组具有前部和后部。 辅助偏转绕组设置在主偏转绕组的前部，并且被布置成产生与主偏转绕组的场相对的磁场。 每个辅助绕组具有围绕水平偏转轴平均角度横向布置的导体，平均角度作为导体沿着偏转装置的纵向轴线的位置的函数而变化，使得在每个的前部中 一对水平偏转线圈的主偏转绕组，安匝数密度的角分布的傅立叶级数分解的三次谐波的振幅基本上等于或大于基波的角分布的三次谐波的振幅。