Invention Grant
- Patent Title: Photoelectric-surface electron source
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Application No.: US18021457Application Date: 2021-06-09
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Publication No.: US12142450B2Publication Date: 2024-11-12
- Inventor: Tomohiko Hirano , Hiroyuki Taketomi , Motohiro Suyama , Wataru Matsudaira , Akihiro Kageyama , Kota Iwasaki , Taku Yamada
- Applicant: HAMAMATSU PHOTONICS K.K.
- Applicant Address: JP Hamamatsu
- Assignee: HAMAMATSU PHOTONICS K.K.
- Current Assignee: HAMAMATSU PHOTONICS K.K.
- Current Assignee Address: JP Hamamatsu
- Agency: Faegre Drinker Biddle & Reath LLP
- Priority: JP2020-140141 20200821
- International Application: PCT/JP2021/021957 WO 20210609
- International Announcement: WO2022/038867 WO 20220224
- Main IPC: H01J1/34
- IPC: H01J1/34 ; H01J1/88

Abstract:
A photoelectric-surface electron source includes: a glass substrate that receives laser light from a substrate light-receiving surface including microlenses and that focuses the laser light toward a substrate main surface located on the opposite side from the substrate light-receiving surface; a photoelectric surface that is provided to the substrate main surface, and that receives the focused laser light and emits photoelectrons; and an extraction electrode that is fixed to the substrate main surface and that extracts the photoelectrons from the photoelectric surface. The extraction electrode is disposed away from the photoelectric surface along the normal direction of the substrate main surface and has: an electrode part in which electrode holes for allowing the photoelectrons to pass therethrough are provided; and a frame part that is fixed to a region surrounding the photoelectric surface in the substrate main surface.
Public/Granted literature
- US20230343541A1 PHOTOELECTRIC-SURFACE ELECTRON SOURCE Public/Granted day:2023-10-26
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