Electron discharge image tube with electrostatic field shaping e

Details Electron discharge image tube with electrostatic field shaping e Electron discharge image tube with electrostatic field shaping e

1975-11-10

1977-01-04

Segal, Robert

Electric lamp and discharge devices

Geiger-mueller type

313 99, H01J 3904, H01J 3150

Patent

active

040016188

ABSTRACT:
An electrostatic field shaping electrode is mounted external to an image intensifier tube in proximate spaced-apart aligned coaxial relation to an insulating envelope wall portion which is exposed to an internal electron accelerating cavity. The field shaping electrode may be employed during the operation of the tube for substantially preventing electron bombardment of the exposed insulating wall portion and for avoiding spurious output signals resulting from the generation of positive ions by that electron bombardment.

REFERENCES:
patent: 2683816 (1954-07-01), Bouwers
patent: 3333133 (1967-07-01), Morton et al.
patent: 3688146 (1972-08-01), Bouwers
patent: 3735139 (1973-05-01), Kalitinsky et al.
patent: 3787745 (1974-01-01), Wulms
patent: 3801849 (1974-04-01), Edgecumbe
patent: 3809889 (1974-05-01), McBroom

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