公开(公告)号：US4117366A

公开(公告)日：1978-09-26

申请号：US519218

申请日：1974-10-30

Applicant: Gordon Peter Davis

Inventor： Gordon Peter Davis

IPC: B31B1/90 ,  B65H39/14 ,  H01J40/00 ,  H01J43/04 ,  H01J43/28 ,  H01J39/00 ,  H01J39/02

CPC classification number: H01J43/28 ,  H01J43/045

Abstract: A multi-channel photomultiplier tube in which light radiation from distinct sources passes through an entrance window to a photo-cathode, the window being divided into parts so that light from a source passes through a respective part to an associated part of the photo-cathode, the division of the window into parts constraining the light from incidence upon other parts of the photo-cathode.