| 摘要 |
<p>A section perpendicular to a tube axis, of a yoke portion having a deflection yoke mounted thereon is in the shape of a non-circle based on a rectangle. A section perpendicular to the tube axis, of a core portion of the deflection yoke has a shape holding the relation <MATH> where M:N is an aspect ratio, SB is the inner diameter along the vertical axis, LB the inner diameter along the horizontal axis, and DB a maximum inner diameter. <IMAGE></p> |
