| 摘要 |
<p>In a semi-toroidal deflection yoke, a middle point CL(M) of an entire length along a tube axis from a large-diameter portion (34L) to a small-diameter portion (34S) of a magnetic core (34) lies on a small-diameter portion (30S) side of a horizontal deflection coil (30a, 30b) relative to a point lying at a distance of 0.41 x HL along the tube axis from a large-diameter portion (30L) of the horizontal deflection coil (30a, 30b), where HL is an entire length of the horizontal deflection coil (30a, 30b) along the tube axis. <??>The deflection yoke deflects electron beams efficiently, reducing the deflection electric power the deflection yoke requires. A cathode ray tube provided with the deflection yoke can suppress pincushion type distortion which may occur in the vertical direction of a screen, and can therefore display images of satisfactory quality. <IMAGE></p> |
