发明名称 |
X-RAY GENERATOR AND X-RAY IMAGING APPARATUS |
摘要 |
Provided is an X-ray generator including an electron passage in an electron-passage forming member; and a target on an insulative substrate. The transmission X-ray generator irradiates the target with electrons that have passed through the electron passage to generate X-rays. The target is provided at a central region of the substrate; the electron passage accommodates a secondary-X-ray generating section that generates X-rays by irradiation with electrons reflected from the target; the secondary-X-ray generating section and the target are disposed so that both of X-rays generated by direct irradiation of the target with the electrons and X-rays generated by irradiation of the secondary-X-ray generating section with the electrons reflected from the target are radiated to the outside; and at least part of the peripheral region of the substrate has higher transmittance for the X-rays generated at the secondary-X-ray generating section than the central region of the substrate. |
申请公布号 |
US2014362973(A1) |
申请公布日期 |
2014.12.11 |
申请号 |
US201214241426 |
申请日期 |
2012.08.29 |
申请人 |
Ogura Takao;Yanagisawa Yoshihiro;Tamura Miki;Nomura Ichiro;Hiroki Tamayo;Matsutani Shigeki;Ueda Kazuyuki |
发明人 |
Ogura Takao;Yanagisawa Yoshihiro;Tamura Miki;Nomura Ichiro;Hiroki Tamayo;Matsutani Shigeki;Ueda Kazuyuki |
分类号 |
H01J35/08;H01J35/16;G01N23/04 |
主分类号 |
H01J35/08 |
代理机构 |
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代理人 |
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主权项 |
1. An X-ray generator comprising:
an electron passage formed by surrounding the periphery thereof with an electron-passage forming member; and a target provided on an insulative substrate and irradiated with electrons that have passed through the electron passage to generate X-rays, wherein the target is provided at a central region of the substrate; the electron passage accommodates a secondary-X-ray generating section that generates X-rays by irradiation with electrons reflected from the target; the secondary-X-ray generating section and the target are disposed so that both of X-rays generated by direct irradiation of the target with the electrons and X-rays generated by irradiation of the secondary-X-ray generating section with the electrons reflected from the target are radiated to the outside; and at least part of the peripheral region of the substrate, the peripheral region being not covered by the target, has higher transmittance for the X-rays generated at the secondary-X-ray generating section than the central region of the substrate, the central region being covered with the target. |
地址 |
Yokohama-shi JP |