Electron guns for use in cathode ray tubes

Details Electron guns for use in cathode ray tubes Electron guns for use in cathode ray tubes

1977-10-19

1979-12-11

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313449, 313460, 315 15, H01J 2950

Patent

active

041785320

ABSTRACT:
In a unipotential type electron gun including a main lens constituted by three coaxial and spaced apart electrodes for focusing an electron beams, the length of the intermediate electrode is made to be larger than 1.1D, where D represents the inner diameter of the electrodes on both sides, and the sum of the length of one electrode located on the side of a cathode electrode, the length of the intermediate electrode, the gap length therebetween, and the gap length between the intermediate electrode and the electrode on the opposite side is set to be in a range of from 4.0D to 5.4D.

REFERENCES:
patent: 3895253 (1975-07-01), Schwartz et al.
patent: 3919583 (1975-11-01), Hasker et al.
patent: 3987329 (1976-10-01), Yamazaki et al.
patent: 4052643 (1977-10-01), Yamazaki et al.

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