| 摘要 |
PROBLEM TO BE SOLVED: To allow trapezoid shaped image distortions correcting without deterioration of indicating images. SOLUTION: A deflection yoke 15 is provided with saddle type deflection coils 16, 17, an image distortion correction coil 21 provided to locate at the front end side of the yoke by being winded in a circle using a yoke central axis Z as a center, an auxiliary coil 22 provided at the position of back end side of the yoke for generating current from the deflection coils 16, 17 in the reversed direction of the current generated from the deflection coils 16, 17, in a constitution.
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