Electric lamp and discharge devices: systems – Cathode ray tube circuits – Plural concentrating – accelerating – and/or de-accelerating...
Patent
1982-03-31
1985-07-16
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
045299102
ABSTRACT:
A high-performance electron gun is disclosed capable of forming an ultra-small beam spot. The gun has a series of apertured electrodes of various dimension for receiving a range of electrical potentials for forming the beam spot on a cathodoluminescent screen located a predetermined throw distance from the end of the gun. Because of its capability in forming relatively small spot sizes of the order of ten mils or less, the gun finds application in high-resolution monitors, projection television tubes and in cathode ray tubes operating on the beam index principle.
REFERENCES:
patent: 4318027 (1982-03-01), Hughes et al.
"A Novel High-Voltage Bipotential CRT Gun Design", by R. H. Huges and H. Y. Chen, dated Feb. 9, 1979.
Garewal Khem K. S.
Ingle Arthur J.
Blum Theodore M.
Clarke, Jr. Ralph E.
Issing Gregory C.
O'Connor Cornelius J.
Zenith Electronics Corporation
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