Color display tube with twist correction means

Details Color display tube with twist correction means Color display tube with twist correction means

1990-06-21

1992-05-26

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313431, 313440, H01J 2976

Patent

active

051171511

ABSTRACT:
In-line color display tube with a deflection unit, provided with a twist correction device comprising two permanent magnets which generate magnetic fields with oppositely directed magnetic field components which, at the beginning and the end of a path traversed by each side beam, are transverse to the path of the relevant side beam and are located in the plane of the beams. This provides the possibility of deflecting each side beam once up and once down for compensating twist errors.

REFERENCES:
patent: 4962333 (1990-10-01), Sluyterman

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