One piece astigmatic grid for color picture tube electron gun an

Details One piece astigmatic grid for color picture tube electron gun an One piece astigmatic grid for color picture tube electron gun an

1980-12-10

1982-03-09

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

H01J 2902

Patent

active

043191606

ABSTRACT:
A one-piece astigmatic lens is formed in a grid by lancing a section thereof, coining the lanced section to a dimension wider than the trough formed by the lanced section and providing a beam aperture in the lanced and coined section.

REFERENCES:
patent: 2888588 (1959-05-01), Dichter
patent: 3295001 (1966-12-01), Burdick et al.
patent: 3314272 (1967-04-01), Dahl
patent: 3852608 (1974-12-01), Johanns et al.
patent: 3873878 (1975-03-01), Odenthal
patent: 4143293 (1979-03-01), Hosokodhi et al.

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