公开(公告)号：US20230352285A1

公开(公告)日：2023-11-02

申请号：US18026368

申请日：2021-09-03

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tsuyoshi KODAMA ,  Masaki YAMADA ,  Shinichi HARA ,  Naoki UMEBAYASHI

IPC: H01J47/02

CPC classification number: H01J47/02

Abstract: A photoelectric tube includes a housing including a light transmitting portion, an electron emitting portion held by a recess provided in the housing, the electron emitting portion including a concave photoelectric surface facing a light transmitting portion side inside the housing, and an electron capturing portion disposed between the light transmitting portion and the photoelectric surface inside the housing. At least a part of the electron capturing portion is located inside a region on an inside of the photoelectric surface.