Color cathode ray tube having a low dynamic focus voltage

Details Color cathode ray tube having a low dynamic focus voltage Color cathode ray tube having a low dynamic focus voltage

1997-03-04

1998-04-14

Patel, Nimeshkumar

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, 315 15, 315382, H01J 2938, H01J 2962

Patent

active

057396310

ABSTRACT:
A color cathode ray tube includes a final lens, a multipole lens and a lens for correction of curvature of the image field. The final lens focuses more horizontally and its strength weakens in accordance with an angle of beam deflection. The strength of the multipole lens for elongating a cross section of electron beams horizontally weakens in accordance with an angle of beam deflection. The lens for correction of curvature of the image field weakens in accordance with an angle of beam deflection.

REFERENCES:
patent: 5015910 (1991-05-01), Takahashi et al.
patent: 5212423 (1993-05-01), Noguchi et al.

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