Shadow mask each aperture of which is defined by a quadrupolar l

Details Shadow mask each aperture of which is defined by a quadrupolar l Shadow mask each aperture of which is defined by a quadrupolar l

1977-03-22

1977-11-22

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

315375, H01J 2907, H01J 3120

Patent

active

040597814

ABSTRACT:
A post-focusing type color cathode ray tube comprising a quadrupole lens formed in each aperture of the color selection mask.

REFERENCES:
patent: 2728024 (1955-12-01), Ramberg
patent: 2734146 (1956-02-01), Noskowicz
patent: 2862141 (1958-11-01), Kruper et al.
patent: 2971117 (1961-02-01), Law
patent: 3016474 (1962-01-01), Hergenrother
patent: 3502942 (1970-03-01), Khan et al.
patent: 3586900 (1971-06-01), Seki et al.

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