Title:
X-RAY GENERATING TUBE, X-RAY GENERATING APPARATUS, AND RADIOGRAPHY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/130262
Kind Code:
A1
Abstract:
The present disclosure provides a reliable X-ray generating tube that forms a focus with a stable size and shape. The X-ray generating tube includes an electron gun including an electron emitting portion, a plurality of grid electrodes, and an insulating support member that supports the plurality of grid electrodes. The electron gun includes a conductive section that hides the insulating support member to prevent the insulating support member from being directly viewed from an electron through path of electrons emitted from the electron emitting portion and passing through the grid electrodes.
Inventors:
TSUJINO KAZUYA (JP)
Application Number:
PCT/JP2016/005252
Publication Date:
August 03, 2017
Filing Date:
December 28, 2016
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
H01J35/14
Foreign References:
| US4879518A | 1989-11-07 | |||
| SU1481870A1 | 1989-05-23 | |||
| US4621213A | 1986-11-04 | |||
| US20040090166A1 | 2004-05-13 | |||
| US20110114830A1 | 2011-05-19 | |||
| JP2002298772A | 2002-10-11 | |||
| JP2007066694A | 2007-03-15 |
Attorney, Agent or Firm:
ABE, Takuma et al. (JP)
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