In-line electron gun for color cathode ray tube with cut away st

Details In-line electron gun for color cathode ray tube with cut away st In-line electron gun for color cathode ray tube with cut away st

1997-06-30

1999-03-16

Patel, Ashok

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, H01J 2956

Patent

active

058834630

ABSTRACT:
An in-line electron gun for a color cathode ray tube having a main lens comprised of an in-line focusing electrode and accelerating electrode, with which it is possible to easily improve an assembly precision of field-correcting electrode plates provided at the focusing electrode and accelerating electrode and having three through apertures through which the R, G, and B electron beams pass and with which it is possible to easily perform an adjustment of aberration of the main lens. The two side through apertures among the three through apertures formed in the field-correcting electrode plate provided at the focusing electrode and accelerating electrode are formed basically as circular apertures with arc shaped cut-away portions continuous with the outside of the circular apertures and concentric with the circular apertures.

REFERENCES:
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patent: 4940917 (1990-07-01), Still
patent: 5146133 (1992-09-01), Shirai et al.
patent: 5182492 (1993-01-01), Chen
patent: 5466983 (1995-11-01), Shirai et al.
patent: 5488265 (1996-01-01), Chen
patent: 5517078 (1996-05-01), Sugawara et al.
patent: 5606216 (1997-02-01), Uchida et al.

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