Title:
X-RAY GENERATING DEVICE, AND DIAGNOSTIC DEVICE AND DIAGNOSTIC METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/178898
Kind Code:
A1
Abstract:
An X-ray tube (120) is provided with: a cathode (140) and an anode (150) sealed inside a vacuum envelope (121); and an ion-collecting conductor (130) attached to the vacuum envelope so as to contact the internal space of the vacuum envelope. A first current sensor (210) measures a first current value (Ii) that flows between the ion-collecting conductor (130) and a node (Ng) that supplies a potential for attracting positive ions within the vacuum envelope (121). A second current sensor (180) measures a second current value (Ie) that flows between the anode (150) and the cathode (140). A control circuit (190) generates diagnostic information relating to the degree of vacuum in the X-ray tube (120) on the basis of the current ratio (Ii/Ie) of the second current value (Ie) measured by the second current sensor (180) and the first current value (Ii) measured by the first current sensor (210).
Inventors:
AKIYAMA GOSHI (JP)
OHASHI TSUNEHISA (JP)
NAKAMURA KENICHIRO (JP)
SAITO YUTA (JP)
OHASHI TSUNEHISA (JP)
NAKAMURA KENICHIRO (JP)
SAITO YUTA (JP)
Application Number:
PCT/JP2019/008089
Publication Date:
September 10, 2020
Filing Date:
March 01, 2019
Export Citation:
Assignee:
SHIMADZU CORP (JP)
International Classes:
H05G1/26; H01J35/04
Foreign References:
| JPS55119397A | 1980-09-13 | |||
| JP2016146288A | 2016-08-12 | |||
| JP2010186694A | 2010-08-26 | |||
| JP2006100174A | 2006-04-13 | |||
| JPH07134959A | 1995-05-23 | |||
| JPH06119990A | 1994-04-28 | |||
| JPS62160454U | 1987-10-12 | |||
| JP2006100174A | 2006-04-13 | |||
| JP2016146288A | 2016-08-12 |
Other References:
See also references of EP 3934388A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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