Invention Grant
- Patent Title: First-stage dynode and photomultiplier tube
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Application No.: US17057926Application Date: 2019-05-28
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Publication No.: US11302522B2Publication Date: 2022-04-12
- Inventor: Yuki Nishimura , Masahiro Kotani , Takanori Ichinomiya
- 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: JPJP2018-108699 20180606
- International Application: PCT/JP2019/021104 WO 20190528
- International Announcement: WO2019/235300 WO 20191212
- Main IPC: H01J43/20
- IPC: H01J43/20
Abstract:
A first-stage dynode is a first-stage dynode to be used in a photomultiplier tube, and includes a bottom wall portion and a pair of side wall portions extending from both end portions of the bottom wall portion in a predetermined direction to one side. An electron emission surface is formed by a bottom surface of the bottom wall portion on the one side and a pair of side surfaces of the pair of side wall portions on the one side, and each of the pair of side surfaces is a curved surface that is curved in a concave shape in a cross section parallel to the predetermined direction.
Public/Granted literature
- US20210305033A1 FIRST-STAGE DYNODE AND PHOTOMULTIPLIER TUBE Public/Granted day:2021-09-30
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