Electron gun for cathode ray tube

Details Electron gun for cathode ray tube Electron gun for cathode ray tube

1991-12-31

1993-01-19

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

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

313414, H01J 2946, H01J 2956

Patent

active

051809451

ABSTRACT:
An electron gun for a cathode ray tube comprises a triode having a control electrode and a screen electrode. Each electrode has a number of beam passing holes. The diameter of the beam passing holes of the control electrode is greater than the diameter of the beam passing holes of the screen electrode. Accordingly, spherical aberrations of cathode and prefocusing lenses are decreased, thereby improving image resolution.

REFERENCES:
patent: 4542320 (1985-09-01), Suzuki et al.

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