Electrode assembly for electrostatic lens of electron gun

Details Electrode assembly for electrostatic lens of electron gun Electrode assembly for electrostatic lens of electron gun

1987-02-12

1989-01-24

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313449, H01J 2958

Patent

active

048003182

ABSTRACT:
An electrode assembly for an electrostatic lens of the in-line type electron gun for a color cathode ray tube, includes a pair of tubular electrodes arranged in axially opposing relation. Each of the tubular electrodes includes a main tubular electrode member closed at its one end by an end wall which has an aperture of the configuration obtained by partially overlapping a plurality of circular openings arranged in an in-line manner. An auxiliary electrode member is fitted into the main electrode member. The auxiliary electrode member has an end wall positioned separately from the end wall of the main electrode member by a predetermined distance. The end wall of the auxiliary electrode member is formed with a plurality of independent collars projecting therethrough in parallel to the axial direction of the respective circular openings of the overlapped-multicircle aperture and to superpose the corresponding circular openings of the overlapped-multicircle aperture in an axial direction.

REFERENCES:
patent: 4668892 (1987-05-01), Peels

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