Cathode ray tube having improved structure for controlling image

Details Cathode ray tube having improved structure for controlling image Cathode ray tube having improved structure for controlling image

1993-09-01

1995-09-05

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

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

315382, 313414, 313441, 313448, H01J 2946, H01J 2950, G01G 104

Patent

active

054481341

ABSTRACT:
A cathode ray tube having an electron gun for relatively low beam currents (less than 1 mA) is shown. The electron gun has a G1 and a G2 electrode. The voltage difference between these electrodes is more than 800 Volt and the electrical field strength E.sub.12 between said electrodes is more than 4 keV/mm. An improvement in spot size is thereby obtained.

REFERENCES:
patent: 4318027 (1982-03-01), Hughes et al.
patent: 4529910 (1985-07-01), Garewal et al.
patent: 4764704 (1988-08-01), New et al.
patent: 5287038 (1994-02-01), Hagar et al.

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