| 摘要 |
PURPOSE:To eliminate the necessity of the static convergence magnet so as to secure a space for adjusting the purity at the neck part of the image receiving tube, by adding a static convergence adjusting function to the dynamic convergence correcting device. CONSTITUTION:Eight poles of solenoids 2a-2h and six pieces of magnetic bodies 4a-4g are arranged around inline arranged beams 1a-1c. To the spaces between each magnetic body, four pieces of discoid permanent magnets 5ab, 5bc, 5ef, and 5fg are installed and, by rotating the discoid permanent magnets, the polarity and intensity of magnetic fields 6ab, 6bc, 6ef, 6fg are changed. While the polarity and intensity of the magnetic fields are changed, the side beam 1band 1c are moved to optinoal positions and they are united with the center beam 1a on a fluorescent screen. |
