| 摘要 |
A color cathode ray tube includes a magnetic shield housed in a funnel portion thereof and a deflection device mounted in a vicinity of a transition region between a plurality of electron beams on a phosphor screen. The magnetic shield is configured so as to satisfy the inequality Dcor<Dave, where Dave=(Dverm+Dhorm+Dcor)/3. Magnetic shield-core distances are measured in a section plane containing a longitudinal axis of the cathode ray tube and inclined at a section plane angle theta with respect to a horizontal scanning direction of the plurality of electron beams. Dverm and Dhorm are magnetic shield-core distances measured at section plane angles 0° and 90°, respectively, and Dcor is a magnetic shield-core distance measured in a section plane intersecting a corner of a generally rectangular end of the magnetic shield facing toward an electron gun.
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