Image intensifier unitube for intensified charge transfer device

Details Image intensifier unitube for intensified charge transfer device Image intensifier unitube for intensified charge transfer device

1978-07-05

1979-12-11

Segal, Robert

Electric lamp and discharge devices

Secondary emission prevention

Nonemissive material

313318, 316 22, 29 2513, H01J 3902, H01J 3914

Patent

active

041785282

ABSTRACT:
A unitube that is used in intensified charge transfer devices (ICTDs) hav a semiconductor charge transfer device in proximity focus with the photocathode. The unitube is comprised of a tube base section having a centrally raised portion where the charge transfer device (CTD) is internally mounted directly thereon and of an external open space for the mounting of a thermoelectric (TE) cooler for cooling the semiconductor CTD.
The CTD has a grounded metal shield overlapping its outer portion to avoid high voltage break down in the area between the high voltage photocathode and the CTD. The base may be brazed to one end of the image intensifier tube wall by a Kovar ring. The faceplate may be attached to the other end of the image intensifier by a blunt or knife edge type indium seal.

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