Image tube having a conductive film for preventing spurious disc

Details Image tube having a conductive film for preventing spurious disc Image tube having a conductive film for preventing spurious disc

1981-08-10

1984-07-10

Demeo, Palmer C.

Electric lamp and discharge devices

Photosensitive

Having phosphor screen

313530, 313541, 313544, H01J 4016, H01J 4006

Patent

active

044595085

ABSTRACT:
An image tube comprises a conductive film along the inside surface of an insulating tube extending axially of the image tube between a photoelectric cathode and a fluorescent anode. The conductive film should be electrically connected to the photoelectric cathode and have an axial length between 1/2 and 3/4 of that of the insulating tube. The conductive film may be formed along the outside surface of the insulating tube and either together with or without a conventional semi-insulating layer formed along the inside surface of the insulating tube.

REFERENCES:
patent: 4001618 (1977-01-01), Kaseman

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