Picture display device

Details Picture display device Picture display device

1982-03-01

1987-12-01

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313440, H01J 2954, H01J 2974

Patent

active

047106727

ABSTRACT:
In a cathode ray tube including deflection coils for deflecting an electron beam produced in the tube by an electron gun, the center of the electron gun's focusing lens is positioned to coincide with the deflection point of the deflection coils. This positioning compensates for curvature of the deflection field.

REFERENCES:
patent: 3020434 (1962-02-01), Bloomburgh
patent: 3136918 (1964-06-01), Watson
patent: 3979631 (1976-09-01), van der Ven
patent: 4095138 (1978-06-01), Schwartz
patent: 4345183 (1982-08-01), Fukuda
patent: 4366419 (1982-12-01), Barten
patent: 4393329 (1983-07-01), Lehnert

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