Camera tube with photoconductive target containing selenium,...

Details Camera tube with photoconductive target containing selenium,... Camera tube with photoconductive target containing selenium,...

H - Electricity

01

J

313/35.222

H01J 29/45 (2006.01)

Patent

CA 1135773

1.2.1979 1 PHN 9099 ABSTRACT: A camera tube having an electron source and a target to be scanned on one side by an electron beam emanating from said source, which target comprises on another, radiation receiving side a signal electrode and a selenium-containing vitreous layer containing tellurium in a concentration which varies in the direction of the thickness of the selenium-containing layer and arsenic, characterized in that the tellurium concentration in the selenium-containing layer increases from the side of the signal electrode to the side of the target which is scanned by the electron beam in such manner that over a distance of at most 0.3/µm from the side of the signal electrode the concentration reaches a value of at least 4? at. % and the arsenic concentration everywhere in the layer exceeds 1? at. %.

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