Plural beam cathode ray tube including an astigmatic electron le

Details Plural beam cathode ray tube including an astigmatic electron le Plural beam cathode ray tube including an astigmatic electron le

1974-12-11

1976-07-20

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, H01J 2951, H01J 2956

Patent

active

039708900

ABSTRACT:
A cathode ray tube having three electron guns in one plane which are deflected by a self-converging deflection coil. In order to obtain circular electron spots, the tube includes an astigmatic electron lens which restricts the dimension of the electron spots perpendicular to this one plane.

REFERENCES:
patent: 2834901 (1958-05-01), Barkow et al.
patent: 2866125 (1958-12-01), Haantjes et al.
patent: 3603839 (1971-09-01), Takayanagi
patent: B381074 (1975-01-01), Hasker et al.

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