| 摘要 |
PURPOSE:To improve an intensive compensating effect and workability by compensating the magnetic field asymmetry using a flexible plate-type permanent magnet and sealing this plate-type permanent magnet on a revolving donut- shaped disk. CONSTITUTION:A holder 6 retains a focussing magnet inside and has a tightening section 63 with a notched section 64 so as to be tightened and locked to the neck of a cathode-ray tube. The focussing magnet is retained in the holder 6 so as to be inserted and is tightened and locked using a screw 61. Besides, the holder 6 is provided with a pawl 62 which retains a nonmagnetic donut-shaped disk 7 elastically. A plate-type permanent magnet 2 is sealed and fixed on this nonmagnetic disk 7 using adhesives. As a result, an intensive compensating effect and workability can be improved and cost be reduced. |
