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:
Jul. 03, 2018
Filed:
Aug. 27, 2014
Futaba Corporation, Chiba, JP;
Hamamatsu Photonics Kabushiki Kaisha, Shizouka, JP;
Akira Matsumoto, Chiba, JP;
Kiyoyuki Deguchi, Chiba, JP;
Yuuichi Kogure, Chiba, JP;
Kazuhito Nakamura, Chiba, JP;
Tomoyuki Okada, Shizuoka, JP;
Toru Fujita, Shizuoka, JP;
Tatsuya Nakamura, Shizuoka, JP;
FUTABA CORPORATION, Chiba, JP;
Abstract
Provided is an X-ray tube which can perform stable X-ray radiation under a desired condition in a radiation region extending in a predetermined direction. Included are a base plate having an opening portion and made of alloy 426, an X-ray transmission window made of titanium foil and arranged to close the opening portion of the base plate, a flat box-like vessel portion attached to the base plate and inside of which is in a vacuum state, an X-ray target provided at the opening portion in the vessel portion, and an electron source injecting electrons to the X-ray target in the vessel portion. The electron source includes a liner cathode, a first control electrode pulling out electrons from the cathode and a second control electrode restricting radiation range of the pulled-out electrons. At this time, X-rays emitted from the X-ray window spreads radially from opening shape of the opening portion.