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    • 41. 发明专利
    • Field emitter based electron source with minimized beam emitance growth
    • 具有最小化光束发射增长的基于场发射器的电子源
    • JP2009238750A
    • 2009-10-15
    • JP2009069555
    • 2009-03-23
    • General Electric Co ゼネラル・エレクトリック・カンパニイGeneral Electric Company
    • ZOU YUNCAO YANGINZINNA LOUIS PAULNECULAES VASILE BOGDAN
    • H01J29/48H01J1/304
    • H01J35/065H01J2235/062
    • PROBLEM TO BE SOLVED: To provide a system and a method for limiting emittance growth in an electron beam. SOLUTION: This system (10) includes an emitter element (26) configured to generate the electron beam (28) and an extraction electrode (20) positioned adjacent to the emitter element (26) to extract the electron beam (28) out therefrom. The extraction electrode (20) includes an opening (24) therethrough. This system (10) also includes a meshed grid (32) disposed in the opening (24) of the extraction electrode (20) to enhance intensity and uniformity of an electric field at a surface of the emitter element (26) and an emittance compensation electrode (ECE) (34) positioned adjacent to the meshed grid (32) on the opposite side of the emitter element (26) side of the meshed grid (32) and configured to control emittance growth of the electron beam (28). COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种用于限制电子束中的发射增长的系统和方法。 解决方案:该系统(10)包括被配置为产生电子束(28)的发射极元件(26)和邻近发射极元件(26)定位以提取电子束(28)的引出电极(20) 从中出来。 提取电极(20)包括通过其的开口(24)。 该系统(10)还包括设置在引出电极(20)的开口(24)中的网状网格(32),以增强在发射体元件(26)的表面处的电场的强度和均匀性,并且发射率补偿 电极(ECE)(34),位于与网状网格(32)的发射体元件(26)侧相对的网状网格(32)附近,并且被配置为控制电子束(28)的发射增长。 版权所有(C)2010,JPO&INPIT
    • 42. 发明专利
    • Multi x-ray generator and radiographic equipment
    • 多发X射线发生器和放射性设备
    • JP2009205992A
    • 2009-09-10
    • JP2008048827
    • 2008-02-28
    • Canon Incキヤノン株式会社
    • OKUNUKI MASAHIKOTSUJII OSAMUSHIMIZU SUGURUOGURA TAKASHI
    • H05G1/52A61B6/00G21K1/00G21K5/04G21K5/08H01J35/06H01J35/08
    • A61B6/405A61B6/00A61B6/4007A61B6/4028A61B6/4035A61B6/4233A61B6/482H01J35/065H01J35/08H01J2235/062H01J2235/068H01J2235/087
    • PROBLEM TO BE SOLVED: To provide a multi X-ray generator and a radiographic equipment, for obtaining an X-ray image of high contrast with a low dosage at high speed by increasing flexibility in selecting a ray-beam quality in an X-ray source and an irradiation position. SOLUTION: The multi X-ray generator provided with a plurality of electron sources arranged in two dimensions and targets arranged in positions opposite thereto includes: a multi electron source including a plurality of electron sources and emitting electrons from the electron sources driven by driving the plurality of electron sources selectively in response to drive signals supplied; and a target portion including a plurality of targets generating X-ray in response to irradiation of the electrons emitted from the multi electron source and outputting X-ray with a different ray-beam quality depending on the generation position of X-ray, wherein the generation position and the ray-beam quality of the X-ray from the target portion are controlled by selective drive of the electron sources in the multi electron source. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种多X射线发生器和射线照相设备,用于通过增加选择光束质量的灵活性来获得高速度的低剂量的高对比度的X射线图像 X射线源和照射位置。 解决方案:设置有布置在二维上的多个电子源的多X射线发生器和布置在与其相对的位置的目标包括:多电子源,包括多个电子源,并从由电子源驱动的电子源发射电子 响应于所提供的驱动信号有选择地驱动多个电子源; 以及目标部分,包括响应于从多个电子源发射的电子的照射而产生X射线的多个目标,并且根据X射线的产生位置输出具有不同射线束质量的X射线,其中, 通过多电子源中的电子源的选择性驱动来控制来自目标部分的X射线的生成位置和射线束质量。 版权所有(C)2009,JPO&INPIT
    • 43. 发明专利
    • X-ray tube
    • X射线管
    • JP2007311186A
    • 2007-11-29
    • JP2006139124
    • 2006-05-18
    • Hamamatsu Photonics Kk浜松ホトニクス株式会社
    • OKADA TOMOYUKIFUJITA KIYOSHIYAMAMOTO TORUNAKAMURA TATSUYA
    • H01J35/06H01J35/08H01J35/16
    • H01J35/065H01J35/14H01J35/16H01J35/18H01J2235/062H01J2235/068H01J2235/087H01J2235/164H01J2235/183
    • PROBLEM TO BE SOLVED: To provide an X-ray tube that provides stable X-ray irradiation even if the X-ray irradiation range is expanded.
      SOLUTION: This X-ray tube 1 comprises: a vacuum envelope 5 at least part of which includes an insulating member; an electron source 8 with a carbon-based electron emitting material 6 disposed on the surface of a metallic mesh material 7 provided along an inner surface 3a of a lower face plate 3 made from an insulating member; a target material 15 provided opposite to the electron source 8 in the vacuum envelope 5, for generating X-rays in response to the entry of electrons from the electron source 8; an upper face plate 2 attached to the vacuum envelope 5 to function as an X-ray exit window for leading out the X-rays generated from the target material 15 therethrough; and a lead electrode 11 fixed between the electron source 8 and the target material 15 in the vacuum envelope 5.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 解决的问题:为了提供即使X射线照射范围扩大也能够提供稳定的X射线照射的X射线管。 解决方案:该X射线管1包括:真空外壳5,其至少一部分包括绝缘构件; 电子源8,其具有设置在金属网材7的表面上的碳基电子发射材料6,金属网材料7沿着由绝缘构件制成的下表面板3的内表面3a设置; 与真空外壳5中的电子源8相对设置的用于响应于来自电子源8的电子的进入而产生X射线的靶材料15; 安装在真空外壳5上的上表面板2,用作用于引出从目标材料15产生的X射线的X射线出射窗; 以及固定在真空外壳5中的电子源8与目标材料15之间的引线电极11.版权所有(C)2008,JPO&INPIT
    • 50. 发明专利
    • Industrial x-ray tube
    • 工业X射线管
    • JP2012049119A
    • 2012-03-08
    • JP2011166917
    • 2011-07-29
    • Rigaku Corp株式会社リガク
    • OGATA KIYOSHIKANI TETSUOKAMBE RYOTAKEDA YOSHIHIKOSATO TAKAHISAOSAKA NAOHISA
    • H01J35/06
    • H01J35/16H01J35/065H01J2235/062H01J2235/16
    • PROBLEM TO BE SOLVED: To provide an industrial x-ray tube that is small in size and lightweight, and provides a large X-ray emission amount.SOLUTION: An industrial X-ray tube 1 houses a cathode 4A and an anode 6 inside a container 2 in which the interior is vacuated, and generates X-rays from the anode by applying electrons generated in the cathode 4A to the anode 6. The cathode 4A is formed by graphite. This graphite is a layered crystal in which a plurality of carbon hexagonal mesh faces are stacked. The layer growth direction of this graphite is the direction of the c-axis of a crystal axis. The graphite is cut based on a crystal axis of the carbon hexagonal mesh face, and the cut surface is defined as an electron emission face. For example, the directions of the a-axis and b-axis of crystal axes are set so as to be any direction among carbon hexagonal mesh faces, the graphite is cut by a plane parallel to the c-axis, and the cut surface can be defined as an electron emission face. In addition, the graphite may be cut by a plane vertical to the c-axis.
    • 要解决的问题:提供尺寸小,重量轻的工业X射线管,并提供大的X射线发射量。 解决方案:工业X射线管1将阴极4A和阳极6容纳在内部真空的容器2内部,并且通过将在阴极4A中产生的电子施加到阳极而从阳极产生X射线 阴极4A由石墨形成。 该石墨是层叠有多个碳六方网眼面的层状结晶体。 该石墨的层生长方向是晶轴的c轴方向。 基于碳六方网眼面的晶轴切割石墨,将切断面定义为电子发射面。 例如,将晶轴的a轴和b轴的方向设定为碳六方网眼面之间的任意方向,将石墨切割成与c轴平行的面,切割面可以 被定义为电子发射面。 此外,石墨可以被垂直于c轴的平面切割。 版权所有(C)2012,JPO&INPIT