| 摘要 |
PURPOSE:To easily perform the adjustment of static convergence or colorimetric purity of a tube, by separately arranging a magnetic material that forms a magnetic pole in two places at the side near a cathode and at the side near a fluorescent screen. CONSTITUTION:Two magnetic materials 18, 19 are separately provided, and any convergence error due to the difference of a focus voltage can be adjusted by independently providing a 4-pole magnetic pole in the second magnetic material 12 without influencing a multipoled magnetic pole formed in the first magnetic material 18, thus the second magnetic material 19 can be only remagnetized also when it is readjusted in a relatively simple manner. |
