Uni-bipotential symmetrical beam in-line electron gun

Details Uni-bipotential symmetrical beam in-line electron gun Uni-bipotential symmetrical beam in-line electron gun

1997-07-09

1999-05-25

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Plural concentrating, accelerating, and/or de-accelerating...

3153821, 313449, H01J 2946, H01J 2956

Patent

active

059072172

ABSTRACT:
A Uni-Bipotential in-line electron gun for a color cathode ray tube includes a specially shaped G4 electrode for compensating the gun for comatic distortion. In the G4 electrodes the three apertures are oblong in shape, with the two outer apertures being horizontally displaced from the beam axis to inwardly displace the electron beams so that they substantially fall on the respective optical axes of symmetry of the main lens.

REFERENCES:
patent: 5055749 (1991-10-01), Chen et al.
patent: 5461278 (1995-10-01), Misono et al.
patent: 5625252 (1997-04-01), Tsuzurahara
patent: 5675211 (1997-10-01), Ueda

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