Device having a camera tube

H - Electricity – 04 – N

Patent

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350/55

H04N 3/16 (2006.01) H01J 29/58 (2006.01) H01J 31/38 (2006.01)

Patent

CA 1130448

ABSTRACT A device having a camera tube of the vidicon type. During flybacks of the deflection, the beam cur- rent is increased and the cathode potential is increased so as to achieve the so-called anti-comet tail effect. In order to cause during flybacks the beam to neverthe- less land on the sensitive layer perpendicularly every- where, the electron beam is focused at the deflection point of the deflection coils during the flybacks.

313079

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