公开(公告)号：US12033827B2

公开(公告)日：2024-07-09

申请号：US17604368

申请日：2020-07-31

Applicant: Photo electron Soul Inc.

Inventor： Haruka Shikano ,  Daiki Sato ,  Reiki Watanabe ,  Tomoaki Moriya ,  Hokuto Iijima

IPC: H01J1/34 ,  H01J37/073

CPC classification number: H01J1/34 ,  H01J37/073

Abstract: Provided is a photocathode kit that does not require adjustment of the distance between a photocathode film and a lens focusing on the photocathode film when the photocathode and the lens are installed inside an electron gun. The photocathode kit includes: a photocathode including a substrate in which a photocathode film is formed on a first surface; a lens; and a holder that holds the substrate and the lens, and the holder has a retaining member that retains the photocathode film and the lens to be spaced apart by a predetermined distance, and a first communication path that communicates between inside of the holder and outside of the holder.

公开(公告)号：US20230230794A1

公开(公告)日：2023-07-20

申请号：US17996215

申请日：2021-03-30

Applicant: PHOTO ELECTRON SOUL INC.

Inventor： Tomohiro Nishitani ,  Daiki Sato

IPC: H01J37/073

CPC classification number: H01J37/073 ,  H01J2237/06333 ,  H01J2237/0653 ,  H01J2237/30472

Abstract: An object is to provide an electron gun that can extend the lifetime of a photocathode. The object can be achieved by an electron gun including: a substrate having a photocathode film formed on a first face; a light source for irradiating the photocathode film with excitation light; an anode; a heater device for heating the photocathode film and/or the substrate; and an output adjustment device that adjusts a heating temperature of the heater device.