Cathode ray tube which is small and uses a small amount of power

Details Cathode ray tube which is small and uses a small amount of power Cathode ray tube which is small and uses a small amount of power

1984-08-23

1990-03-20

Wieder, Kenneth

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313450, H01J 2962, H01J 3138

Patent

active

049104292

ABSTRACT:
A cathode ray tube comprises an envelope; an electron beam source positioned at one end of the envelope; a target positioned at another end of the envelope opposite to the electron beam source; a mesh electrode positioned opposite to the target; and an electrostatic lens means positioned between the electron beam source and the mesh electrode, the lens means having a first electrode, a second electrode and a third electrode respectively positioned along the electron beam path to focus the electron beam, the second electrode being divided into four arrow or zig-zag patterns to deflect the electron beam.

REFERENCES:
patent: 2681426 (1954-06-01), Schlesinger
patent: 3731136 (1973-05-01), Roussin

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