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. 09, 2014
Filed:
Dec. 27, 2011
Masahiro Nonoguchi, Tachikawa, JP;
Masashi Kageyama, Ome, JP;
Tomohiro Chaki, Tachikawa, JP;
Masaaki Yamakata, Akishima, JP;
Koichi Kato, Hamura, JP;
Masaru Kuribayashi, Akishima, JP;
Masahiro Nonoguchi, Tachikawa, JP;
Masashi Kageyama, Ome, JP;
Tomohiro Chaki, Tachikawa, JP;
Masaaki Yamakata, Akishima, JP;
Koichi Kato, Hamura, JP;
Masaru Kuribayashi, Akishima, JP;
Rigaku Corporation, Akishima-Shi, Tokyo, JP;
Abstract
Provided is an X-ray generator comprising a cathode for generating electrons; a rotating anode having a cylindrical electron impingement surface, an X-ray focal point being formed by a region in which the electrons impinge upon the electron impingement surface; and a Wehnelt electrode for imparting an electric field to the electrons emitted from the cathode. The Wehnelt electrode has a field formation surface for forming the electric field, and an electron passage aperture formed by the field formation surface. The field formation surface of the Wehnelt electrode is inclined with respect to a plane tangent to an outer circumferential surface of the rotating anode at the center of the X-ray focal point. The center of the cathode is in a plane orthogonal to the field formation surface and aligned with the center of the electron passage aperture.