Inventors:
Jack Caryl Coffin - Lancaster PA
Assignee:
RCA Corporation - New York NY
International Classification:
H01J 3912, H01J 3150
Abstract:
A photodetector comprises an evacuated envelope with a transparent face plate. The face plate is selected from a material which causes total internal reflection of photons produced by Cerenkov radiation. In the evacuated envelope are an anode and a transmissive type photocathode. The photocathode is spaced apart from the face plate.