Corona-shield for an image-tube photocathode

Details Corona-shield for an image-tube photocathode Corona-shield for an image-tube photocathode

1977-06-27

1978-09-19

Smith, Alfred E.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Plural circuit elements

315 58, 250213VT, 313 94, 313242, 313313, H01J 1978

Patent

active

041157222

ABSTRACT:
A hollow cylindrical member composed of a high-voltage potting material is secured adjacent the photocathode to the high-voltage potting material encircling the image-tube. The hollow member is concentric with the axis of the tube and extends away from the photocathode. A plurality of equally spaced metallic discs are embedded in the potting material of the corona-shield interconnected by a plurality of resistors. A high-voltage is coupled to one of the metallic discs adjacent the photocathode and a ground is coupled to another of the metallic discs most remote from the photocathode.

REFERENCES:
patent: 3728573 (1973-04-01), Roeber
patent: 4000432 (1976-12-01), Coon et al.

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