Multiple beam cathode ray tube with apertured cathode and contro

Details Multiple beam cathode ray tube with apertured cathode and contro Multiple beam cathode ray tube with apertured cathode and contro

1979-12-12

1981-11-17

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313413, 313414, 313417, H01J 2950

Patent

active

043013899

ABSTRACT:
A multiple beam cathode ray tube having an improved cathode-grid structure which facilitates grid lead connections and mounting. The cathode means has a plurality of openings which are arranged in an array pattern which is identical to the desired electron beam array pattern, and has an emitter means associated with each opening for emitting a group of electrons. The grid means is located behind instead of in front of the cathode means and is comprised of a plurality of grid elements mounted on a substrate. When appropriately biased, the grid elements cause groups of electrons which are emitted by the respective emitter means to flow through the corresponding openings in the cathode in the direction of the screen, thus establishing the required electron beams.

REFERENCES:
patent: 2005330 (1935-06-01), Sukumlyn
patent: 2956194 (1960-10-01), Alma et al.
patent: 3214632 (1965-10-01), Harman
patent: 3748514 (1973-07-01), Standaart
patent: 4121130 (1978-10-01), Gange

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