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:
Dec. 30, 2025
Filed:
Nov. 25, 2021
Hamamatsu Photonics K.k., Hamamatsu, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu, JP;
Abstract
There are provided a light guide, an electron ray detector, and a charged particle device that can improve light guiding efficiency of light generated in response to incidence of a detection ray. The electron ray detector includes: a light guide member extending in one direction; a first fluorescent substance layer provided on one end portion side of the light guide member and generating primary fluorescent light in response to incidence of a detection ray; a second fluorescent substance layer extending from one end to the other end of the light guide member and generating secondary fluorescent light in response to incidence of the primary fluorescent light; and a detection unit provided on the other end portion side of the light guide member and optically coupled to the light guide member.