Cathode ray tube with internal double-wall magnetic shield

Details Cathode ray tube with internal double-wall magnetic shield Cathode ray tube with internal double-wall magnetic shield

1987-12-24

1989-11-21

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313402, H01J 2906

Patent

active

048825166

ABSTRACT:
A cathode ray tube having an internal magnetic shield formed of an inner magnetic plate and an outer magnetic plate which intersect at an acute angle, the distance from the upper terminal end of the inner magnetic plate to the inner surface of the panel, and the distance from the upper end of the outer magnetic plate to the inner surface of the panel being adjusted so as to satisfy a predetermined relationship, thus improving the magnetic shield effect.

REFERENCES:
patent: 3867668 (1975-02-01), Shrader
patent: 4385256 (1983-05-01), Tokita et al.

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