Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Patent
1980-09-24
1983-08-30
Demeo, Palmer C.
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
313440, 313442, 335210, 335212, H01J 2956, H01J 2976
Patent
active
044019173
ABSTRACT:
If in a device for displaying colored pictures comprising a color display tube of the "in-line" type, which comprises magnetized means for maintaining a static magnetic multipole magnetic field near the output of the electron gun system for carrying out static beam corrections, a correction magnet is provided outside the neck near the output of the electron gun system and near at least one outermost electron beam, which magnet forms a magnetic dipole and is intersected by the said plane and which correction magnet is small with respect to its distance to said electron beam, it is possible afterwards to provide small corrections in the horizontal static convergence.
REFERENCES:
patent: 2455676 (1948-12-01), Hillier
patent: 2935635 (1960-05-01), Boothroyd et al.
patent: 3020434 (1962-02-01), Bloomsburgh
Briody Thomas A.
DeMeo Palmer C.
Streeter William J.
U.S. Philips Corporation
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