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:
Dec. 11, 2018
Anritsu Infivis Co., Ltd., Kanagawa, JP;
Yamaguchi University, Yamaguchi, JP;
Hiroyuki Koba, Kanagawa, JP;
Jyunichi Moriya, Kanagawa, JP;
Yoshifumi Takahashi, Kanagawa, JP;
Hiroki Kurisu, Yamaguchi, JP;
ANRITSU INFIVIS CO., LTD., Kanagawa, JP;
YAMAGUCHI UNIVERSITY, Yamaguchi, JP;
Abstract
An X-ray tube, including: an envelope () that holds inside thereof at a predetermined pressure; a filament () for emitting electrons and a focus electrode () provided in the envelope: and a target () for generating X-ray provided in the envelope facing to the filament () and the focus electrode (), wherein the envelope () has an envelope body () and an X-ray window portion () having a higher X-rays transmissivity and a higher electric conductivity than the envelope body (), when the X-ray window portion () or the anode () is set to a lower electric potential than both of an electric potential of the anode () or the X-ray window portion () and an electric potential of the filament () and the focus electrode (), detection of at least one of an ion current (Ii) or an electron current (Ie) through the X-ray window portion () or the anode () is possible.