Color cathode-ray tube having internal magnetic screening
AssigneeThomson Licensing
InventorsNacerdine Azzi, Céline Cossu, Mohamed Massaoudi, Sébastien Volatier
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Abstract
The invention is a color cathode-ray tube having a rectangular front face connected to a funnel shaped rear part, a neck connected to the rear part and having an electron gun therein, the gun is used to generate beams intended to scan the front face under the influence of a deflection device placed on the neck of the tube. The deflection device comprising correction magnets placed on the periphery of the device in locations closest to the front face and a magnetic screen within the tube having an opening for passage of the electron beams, wherein the opening has notches in its periphery. The notches are arranged so as to face at least one pair of correction magnets.
Claims8
Color cathode-ray tube comprising a rectangular flat front face connected to a funnel shaped rear part, a neck connected to the rear part and having an electron gun therein, the gun is used to generate beams intended to scan the front face under the influence of a deflection device placed on the neck of the tube, the device deflects the beams with a deflection angle greater than 108°, wherein
- correction magnets are placed on the periphery of the device in locations closest to the front face, and
- a magnetic screen within the tube has an opening for passage of the electron beams, wherein the opening has notches in its periphery, the notches being arranged so as to face at least one pair of correction magnets.
Dependencies are inferred from the claim text.