| 摘要 |
<p>An improved color picture tube (10) has an inline electron gun (26) for generating and directing three inline electron beams (28), comprising a center beam and two outer beams, along initially coplanar paths (B,G,R) toward a screen (22) of the tube. The beams pass through a deflection zone adapted to have two orthogonal magnetic deflection fields (V,H) established therein. A first (V) of the fields causes deflection of the beams in a first direction perpendicular to the inline direction of the beams, and a second (H) of the fields causes deflection in a second direction parallel to the inline direction of the beams. The gun includes two shunts (74,76;88,90;94,96;100,102) for shunting portions of both deflection fields around the outer beam paths (B,R). Each shunt comprises one magnetically permeable member having an aperture (78;92;98;104) therein and completely surrounds one of the electron beam paths. The improvement comprises each shunt being longer in the first direction than in the second direction, and being symmetric about a central axis of the shunt that parallels the first direction and symmetric about another central axis of the shunt that parallels the second direction.</p> |
