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:
May. 04, 2021
Filed:
Apr. 25, 2019
Applicant:
Hamamatsu Photonics K.k., Hamamatsu, JP;
Inventors:
Assignee:
HAMAMATSU PHOTONICS K.K., Hamamatsu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01T 1/22 (2006.01); G01T 1/24 (2006.01); G01T 1/20 (2006.01); G01T 1/202 (2006.01); G01N 23/095 (2018.01);
U.S. Cl.
CPC ...
G01T 1/22 (2013.01); G01T 1/20 (2013.01); G01T 1/2002 (2013.01); G01T 1/202 (2013.01); G01T 1/2018 (2013.01); G01T 1/248 (2013.01); G01N 23/095 (2018.02);
Abstract
A gamma ray detector is a detector detecting gamma rays and includes a photomultiplier tube having an entrance window and a photoelectric surface. The entrance window is a Cherenkov radiator. The photoelectric surface is formed on a vacuum side of the entrance window via an intermediate layer. The thickness of the intermediate layer is equal to or less than the wavelength of Cherenkov light emitted by an interaction of the gamma rays with the entrance window.