The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2025
Filed:
Dec. 06, 2019
Hamamatsu Photonics K.k., Hamamatsu, JP;
Takeshi Endo, Hamamatsu, JP;
Hiroshi Kobayashi, Hamamatsu, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu, JP;
Abstract
The present embodiment relates to an ion detector and the like that can reduce a dark current serving as a noise component. An ion detector having an electron multiplier includes a shield structure confining a potential gradient spreading in all directions starting from an input electrode into a limited space including the input electrode, and an input cable having one end electrically connected to the input electrode. The shield structure has a structure surrounding at least the input electrode, and includes one or more members. Each of the members is comprised of a metal material or an insulating material. Further, a part of the shield structure is constituted by a metal mesh window. An outer peripheral surface of the input cable is covered with an insulating coating in order to block the arrival of unnecessary ions and electrons generated inside and outside the shield structure.