Electron gun system with dynamic convergence control

Details Electron gun system with dynamic convergence control Electron gun system with dynamic convergence control

1990-05-10

1991-06-25

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313412, H01J 2970, H01J 2976

Patent

active

050270435

ABSTRACT:
For use particularly in a color cathode ray tube electron gun, means for diverting an electron beam from a straight line path. The beam diverting means has general utility, but is disclosed as part of a quadrupole lens for correcting astigmatism introduced by an associated self-converging yoke. The beam bending feature in the dynamic quadrupole compensates for convergence errors undesirably introduced by the dynamic focus voltage.

REFERENCES:
patent: 4388553 (1983-06-01), Chen
patent: 4701677 (1987-10-01), Ashizaki et al.
patent: 4712043 (1987-12-01), Takenaka et al.
patent: 4814670 (1989-03-01), Suzuki et al.
patent: 4886999 (1989-12-01), Yamane et al.

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