Static convergence assembly

Details Static convergence assembly Static convergence assembly

1985-11-05

1988-08-23

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313433, 335212, H01J 2954, H01J 2976

Patent

active

047663430

ABSTRACT:
A static convergence assembly includes a collar adapted to encircle the neck of a cathode ray tube (CRT). A number of extensions project radially outwardly from the collar along selected radii of the CRT neck and individually carry elongate stems mounted for longitudinal and rotational movement therealong. A permanent magnet, carried at the end of each stem nearest the CRT neck, develops a beam deflecting magnetic field within the CRT. The rotational and longitudinal position of each stem can be adjusted to adjust the orientation and strength of each magnetic field to alter the deflection of each beam as required to achieve static convergence.

REFERENCES:
patent: 3138730 (1964-06-01), Heuer et al.
patent: 3349268 (1967-10-01), Babcock et al.
patent: 3354337 (1967-11-01), De Both
patent: 3512035 (1970-05-01), Egawa et al.

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