Cathode ray tube having a zig-zag shaped deflection electrode

Details Cathode ray tube having a zig-zag shaped deflection electrode Cathode ray tube having a zig-zag shaped deflection electrode

1984-08-23

1987-04-07

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313340, 313432, 313434, 313458, 313450, H01J 2962, H01J 2974, H01J 3138

Patent

active

046563873

ABSTRACT:
A cathode ray tube comprises an envelope, an electron gun having a beam limiting aperture, a first electrode, a second electrode, a third electrode and a mesh electrode, the first, second and third electrodes constituting electrostatic lens system to focus the electron beam, the second electrode being a deflection electrode of arrow or zig-zag patterns to deflect the electron beam, wherein if distance between the beam limiting aperture and the mesh electrode is l, length of the second electrode is made (1/3 l-1/10 l) and (1/3 l+1/10 l), and distance between the beam limiting aperture and the center of the second electrode is made (1/2 l-1/3 l) to (1/2 l).

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

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