H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/35.11
H01J 29/76 (2006.01) H01J 29/70 (2006.01)
Patent
CA 1213303
Abstract An improved color picture tube has an inline electron gun for generating and directing three inline electron beams along initially coplanar paths toward a screen of the tube. The beams pass through a deflection zone adapted to have two orthogonal magnetic deflection fields established therein. A first of the fields causes deflection of the beams perpendicular to the inline direction of the beams, and a second of the fields causes deflection parallel thereto. The improvement comprises the electron gun including four magnetically permeable members located near the exit of the electron gun in a fringe portion of the deflection zone. A first and a second of the members are located between the center beam path and a first and a second outer beam path, respectively. A third and a fourth of said members are spaced from the first and second members, respectively, and located on the outside of the respective outer beam paths. The first and third members and the second and fourth members bypass a part of the fringe portion of each of the two orthogonal deflection fields around the respective outer beam paths, while allowing another part of each of the same fringe portions to pass through the respective outer beam paths. The first and second members bypass a part of the fringe portion of each of the orthogonal deflection fields around the center beam path, while allowing another part of each of the same fringe portions to pass through the center beam path.
469209
Chen Hsing-Yao
Hughes Richard H.
Morneau Roland L.
Rca Corporation
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