Color cathode-ray tube apparatus

Details Color cathode-ray tube apparatus Color cathode-ray tube apparatus

1992-04-06

1993-11-16

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313414, G09G 104, H01J 2950

Patent

active

052627020

ABSTRACT:
In an electron gun assembly, electron beams emitted from cathodes are focused in first cross-over and accelerated and controlled by grids along three axes arranged in-line. The controlled electron beams are weakly converged by unipotential lenses and are converged in a vertical plane by a common single electron lens having a lens power which is varied in accordance with a horizontal or vertical deflection of the electron beams. The converged electron beams form second cross-over on the axes which are shifted along the axes are diverged from the second cross-overs. The diverged electron beams are further focused and converged onto a screen by a main lens.

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patent: 4742279 (1988-05-01), Gerritsen
patent: 4814670 (1989-03-01), Suzuki et al.
patent: 4877998 (1989-10-01), Maninger et al.

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