Apparatus for controlling the electron beam in a television came

Details Apparatus for controlling the electron beam in a television came Apparatus for controlling the electron beam in a television came

1986-04-23

1987-12-29

Rubinson, Gene Z.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358217, H04N 5235

Patent

active

047164689

ABSTRACT:
A camera tube device for use in, for example, a television camera comprises a cathode emitting electrons, and a first grid and a second grid having respective apertures for converging the electrons emitted from the cathode into a fine electron beam. The aperture of the second grid is sufficiently smaller than that of the first grid and plays an important role for the formation of the electron beam. The electron beam scans a target carrying a charge pattern corresponding to the luminous intensity of an object. Voltages applied to the first and second grids are controlled so as to provide the electron beam quantity corresponding to the luminous intensity of the object forming the charge pattern of the target.

REFERENCES:
patent: 3931466 (1976-01-01), Van Den Berg
patent: 4149110 (1979-04-01), Dallos
patent: 4166281 (1979-08-01), Dischert et al.
patent: 4190865 (1980-02-01), Bendell
patent: 4249215 (1981-02-01), Himmelbauer et al.
patent: 4322622 (1982-03-01), Nakamura et al.
patent: 4379310 (1983-04-01), Bendell

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