Cathode ray tube having an Fe-Co-Cr shadow mask and method of ma

Details Cathode ray tube having an Fe-Co-Cr shadow mask and method of ma Cathode ray tube having an Fe-Co-Cr shadow mask and method of ma

1984-06-22

1986-10-07

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

445 47, 148311, 420 36, H01J 2907, H01J 914, C22C 3818

Patent

active

046161546

ABSTRACT:
A cathode-ray tube of the post-focusing type comprising color selection means in the form of a ferromagnetic plate having a large number of apertures. The plate is magnetized so that a magnetic quadrupole lens is formed in each aperture. The ferromagnetic plate consists of an Fe-Co-Cr alloy having 25-27% by weight of Co and the remainder essentially Fe.

REFERENCES:
patent: 3050653 (1962-08-01), Salinger
patent: 3909928 (1975-10-01), Sato et al.
patent: 4008105 (1977-02-01), Yuda et al.

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