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:
Nov. 12, 2024
Filed:
Jun. 09, 2021
Hamamatsu Photonics K.k., Hamamatsu, JP;
Tomohiko Hirano, Hamamatsu, JP;
Hiroyuki Taketomi, Hamamatsu, JP;
Motohiro Suyama, Hamamatsu, JP;
Wataru Matsudaira, Hamamatsu, JP;
Akihiro Kageyama, Hamamatsu, JP;
Kota Iwasaki, Yokohama, JP;
Taku Yamada, Yokohama, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu, JP;
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.