Title:
X線管
Document Type and Number:
Japanese Patent JP5203723
Kind Code:
B2
Abstract:
A distance (L1) from an X-ray tube central axis (0) to an outer side surface of a cathode electron gun (16) in a direction perpendicular to the longitudinal direction of a filament coil (15) is made less than a distance (P1) from the X-ray tube central axis (O) to an outer side surface of the cathode electron gun (16) in the longitudinal direction of the filament coil (15), and a distance (L2) from the X-ray tube central axis (0) to an X-ray radiation window (20a) in the direction perpendicular to the longitudinal direction of the filament coil (15) is made less than a distance (P2) from the X-ray tube central axis (O) to an X-ray radiation window (20b) in the longitudinal direction of the filament coil (15). This configuration makes it possible to position an optical element for collecting X-rays near the focal point of an X-ray tube when using X-rays on a line-focus side, thereby increasing the X-ray collection efficiency.
Inventors:
Takashi Shimono
Application Number:
JP2008008117A
Publication Date:
June 05, 2013
Filing Date:
January 17, 2008
Export Citation:
Assignee:
Toshiba Corporation
Toshiba Electron Tube Devices Co., Ltd.
Toshiba Electron Tube Devices Co., Ltd.
International Classes:
H01J35/16; H01J35/06
Domestic Patent References:
| JP11004675Y1 | ||||
| JP5314937A | ||||
| JP10255701A | ||||
| JP2005228696A | ||||
| JP2006278216A | ||||
| JP2006524548A |
Foreign References:
| WO2006009053A1 |
Attorney, Agent or Firm:
樺澤 襄
Satoshi Kabazawa
Satoshi Kabazawa