| 摘要 |
PURPOSE:To make it possible to correct the local deflection distortion of a non-spherical cathode-tube by arranging a magnet near the horizontal and vertical axes on the deflection yoke picture side. CONSTITUTION:The first magnet 5 is arranged near the horizontal axis 11 of a deflection yoke 1 so that polarity in the N-S direction may be in parallel with the axis 11 while arranging the second magnet 5 near the vertical axis 12 so that the polarity in the N-S direction may be in parallel with the axis 12. Further, the first magnet body 6 is arranged on the side of the axis 11 of the first magnet 5 having a fixed interval d1 while arranging the second magnet body 6 on the side of the axis 12 of the second magnet 5 respectively having a fixed interval d2. Thereby, a magnetic line of force going from one magnet to the other magnet is formed to correct local deflection distortion while concentrating the magnetic line of force increasing deflection distortion on the arranged magnet body 6 to reduce a working magnetic field except a place to be corrected thus being able to form a correction magnetic field on the local deflection distortion part on the picture of a non-spherical surface cathode-ray tube with good efficiency.
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