Television camera tube with diode electron gun

Details Television camera tube with diode electron gun Television camera tube with diode electron gun

1980-07-07

1983-03-15

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313452, H01J 2948, H01J 2962, H01J 3138

Patent

active

043769071

ABSTRACT:
A television camera tube having a diode electron gun comprising a cathode and an anode having a central aperture. The part of the anode surrounding the central aperture is situated closer to the cathode than the remainder of the anode and has an area which is smaller than 75% of the cathode's emissive surface. This configuration minimizes anode current and avoids wasted power while retaining desirable electron beam characteristics.

REFERENCES:
patent: 2310811 (1943-02-01), Schantl et al.
patent: 2443916 (1948-06-01), Kelar
patent: 3278779 (1966-10-01), Szegho
patent: 3870002 (1975-03-01), Van Roos Malen
patent: 3894261 (1975-07-01), Corson

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