Electron gun for projection television cathode ray tubes

Details Electron gun for projection television cathode ray tubes Electron gun for projection television cathode ray tubes

1982-06-01

1984-11-06

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

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

313449, H01J 2946, H01J 2956

Patent

active

044814453

ABSTRACT:
A high-performance bipotential-type electron gun comprises a series of electrodes aligned in spaced relation on an axis. The gun has in the order named lower end means including a cathode, and an apertured plate control electrode and grid electrode. An entry angle control electrode is located between the lower end electrodes and the main focus lens. The main focus lens includes a focusing electrode and a final accelerating electrode. The electron gun according to the invention is defined in terms of dimensions, electrical potentials and ratios thereof which are effective to provide an electron gun of particular suitability for use in projection cathode ray tubes.

REFERENCES:
patent: 4334170 (1982-06-01), Rockwell

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