Color picture tube having improved electron gun

Details Color picture tube having improved electron gun Color picture tube having improved electron gun

H - Electricity

01

J

313/35.124

H01J 29/48 (2006.01) H01J 29/51 (2006.01)

Patent

CA 1131286

RCA 72,893 COLOR PICTURE TUBE HAVING IMPROVED ELECTRON GUN Abstract A color picture tube has an inline electron gun for generating and directing three electron beams, com- prising a center beam and two outer beams, along coplanar paths toward a screen of the tube. The three beams pass through a deflection zone adapted to have vertical and horizontal magnetic deflection fields established therein. The improvement comprises the inclusion of first means for weakening the effect of a portion of the horizontal magnetic deflection field on the center electron beam. Such means include elongated magnetic members located between the outer beams and the center beam,with the direction of elongation being perpendicular to the plane of the electron beam paths. Also included are second means for weakening the effect of portions of both deflection fields on the two outer beams. The second means includes magnetic shield members completely surrounding each of the outer beam paths.

326103

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