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公开(公告)号：US06333967B1
公开(公告)日：2001-12-25
申请号：US09405219
申请日：1999-09-27
申请人： Naohisa Osaka , Seiichi Hayashi
发明人： Naohisa Osaka , Seiichi Hayashi
IPC分类号： H01J3500
摘要： An X-ray generator includes a hermetically sealed main generator unit, and an electron gun and a target housed inside the main generator unit, and bombards the target with electrons emitted from the electron gun and passes an X-ray beam emitted from the surface of the target owing to the bombardment to the exterior through an exit window. An X-ray optical element is provided inside the main generator unit on the output path of the X-ray beam emitted from the target for regulating the X-ray beam and the X-ray beam regulated by the X-ray optical element is passed through the exit window. This configuration improves the durability of the X-ray optical element and enables the length of the X-ray path to the X-ray irradiation point to be shortened so as to suppress attenuation of the emitted X-ray beam by air resistance and thereby reduce power consumption.
摘要翻译： X射线发生器包括密封的主发电机单元，以及电子枪和收容在主发电机单元内的目标，并且用电子枪发射的电子轰击目标，并将从该表面发射的X射线束 目标是由于通过出口窗对外部的轰炸。 X射线光学元件设置在从用于调节X射线束的靶发射的X射线束的输出路径上的主发电机单元的内部，并且由X射线光学元件调节的X射线束通过 通过出口窗口。 该结构提高了X射线光学元件的耐久性，能够缩短X射线照射点的X射线路径的长度，以便抑制由空气阻力引起的X射线束的衰减，从而减少 能量消耗。
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公开(公告)号：US07271530B2
公开(公告)日：2007-09-18
申请号：US11583747
申请日：2006-10-19
IPC分类号： H01J1/15
CPC分类号： H01J1/16 , H01J35/06 , H01J2201/2867
摘要： A filament for an X-ray tube has a varied wire diameter but has a constant coil outside diameter to obtain a good uniformity of the longitudinal temperature distribution of the filament. The filament has a wire diameter d which is gradually reduced from the longitudinal central region to the longitudinal ends while the coil outside diameter D is fixed along the longitudinal direction. The wire is polished at only the inside of the coil to reduce the wire diameter. In order to make the longitudinal temperature distribution uniform as far as possible, the difference Δd between the wire diameter dmax at the longitudinal central region and the wire diameter dmin at the longitudinal ends should satisfy the following limitation: Δd/dmax=0.041 to 0.145.
摘要翻译： 用于X射线管的灯丝具有变化的线径，但具有恒定的线圈外径以获得长丝的纵向温度分布的良好均匀性。 灯丝具有从纵向中心区域到纵向端部逐渐减小的线径d，而线圈外径D沿着纵向方向固定。 线材只在线圈内部抛光，以减少线径。 为了使纵向温度分布尽可能均匀，在纵向中心区域的线径d max max之间的差值Deltad与线径d < 纵向端应满足以下限制：<？in-line-formula description =“In-line Formulas”end =“lead”？> Deltad / d
= 0.041 to 0.145 < line-formula description =“In-line Formulas”end =“tail”？> -
公开(公告)号：US20120027177A1
公开(公告)日：2012-02-02
申请号：US13194355
申请日：2011-07-29
申请人： Kiyoshi OGATA , Yoshihiro Takeda , Tetsuo Kani , Makoto Kanbe , Naohisa Osaka , Takahisa Sato
发明人： Kiyoshi OGATA , Yoshihiro Takeda , Tetsuo Kani , Makoto Kanbe , Naohisa Osaka , Takahisa Sato
CPC分类号： H01J35/16 , H01J35/065 , H01J2235/062 , H01J2235/16
摘要： An industrial X-ray tube formed by accommodating a cathode and anode in a container having an evacuated interior, in which electrons emitted from the cathode are caused to strike the anode and X-rays are emitted from the anode. The cathode is formed from graphite. The graphite is a layered crystal obtained by layering a plurality of carbon hexagonal planes. The graphite is cut based on crystal axes of the carbon hexagonal planes. The resulting cut surface is caused to function as an electron-emitting surface. For example, directions of an a- and b-crystal axis may be set so as to be arbitrary between each of the layers of the carbon hexagonal planes, the graphite may be cut along a surface parallel to the c-axis, and the resulting cut surface may be caused to function as an electron-emitting surface. The graphite may also be cut along a surface orthogonal to the c-axis.
摘要翻译： 通过将阴极和阳极容纳在具有抽空的内部的容器中形成的工业X射线管，其中从阴极发射的电子被引向阳极，并且从阳极发射X射线。 阴极由石墨形成。 石墨是通过层叠多个碳六角形平面而获得的层状晶体。 基于碳六角形平面的晶轴切割石墨。 使得到的切割表面用作电子发射表面。 例如，可以将a晶体轴和b晶轴的方向设定为在碳六角形平面的各层之间是任意的，可以沿着与c轴平行的表面切割石墨，并且由此产生 可能导致切割表面起电子发射表面的作用。 也可以沿着与c轴正交的表面切割石墨。
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公开(公告)号：US07352846B2
公开(公告)日：2008-04-01
申请号：US11583448
申请日：2006-10-19
CPC分类号： H01J35/06
摘要： A coiled filament for an X-ray tube has a varied coil pitch to obtain a good uniformity of the longitudinal temperature distribution. The filament has a central region including plural turns having a same coil pitch, and end regions which include plural turns each of which has a coil pitch smaller than the coil pitch of the central region. The coil pitches of the plural turns of the end regions are reduced one by one by a same variation from a turn close to the central region toward an outermost turn. A value of Δp/p is within a range of 0.015 to 0.1 and k/n is within a range of 0.3 to 0.8, where p is the coil pitch of the central region, Δp is the coil pitch variation of the end regions, n is a total number of turns of the filament, and k is a sum of numbers of turns of the end regions. The k/n preferably satisfies the following equation: k/n=0.72−4.66(Δp/p)±0.12.
摘要翻译： 用于X射线管的螺旋丝具有变化的线圈间距，以获得纵向温度分布的良好均匀性。 灯丝具有包括具有相同线圈间距的多匝的中心区域，以及包括多个匝的端部区域，其中线圈间距小于中心区域的线圈间距。 通过与靠近中心区域的转弯朝向最外侧的转动相同的变化，多个端部区域的线圈间距逐渐减小。 Deltap / p的值在0.015〜0.1的范围内，k / n在0.3〜0.8的范围内，其中p是中心区域的线圈间距，Deltap是端部区域的线圈间距变化，n 是灯丝的总匝数，k是端部区域的匝数之和。 k / n优选满足以下等式：<？in-line-formula description =“In-line Formulas”end =“lead”？> k / n = 0.72-4.66（Deltap / p）±0.12。 -line-formula description =“内联公式”end =“tail”？>
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公开(公告)号：US20070092064A1
公开(公告)日：2007-04-26
申请号：US11583448
申请日：2006-10-19
IPC分类号： H01J35/06
CPC分类号： H01J35/06
摘要： A coiled filament for an X-ray tube has a varied coil pitch to obtain a good uniformity of the longitudinal temperature distribution. The filament has a central region including plural turns having a same coil pitch, and end regions which include plural turns each of which has a coil pitch smaller than the coil pitch of the central region. The coil pitches of the plural turns of the end regions are reduced one by one by a same variation from a turn close to the central region toward an outermost turn. A value of Δp/p is within a range of 0.015 to 0.1 and k/n is within a range of 0.3 to 0.8, where p is the coil pitch of the central region, Δp is the coil pitch variation of the end regions, n is a total number of turns of the filament, and k is a sum of numbers of turns of the end regions. The k/n preferably satisfies the following equation: k/n=0.72−4.66(Δp/p)±0.12.
摘要翻译： 用于X射线管的螺旋丝具有变化的线圈间距，以获得纵向温度分布的良好均匀性。 灯丝具有包括具有相同线圈间距的多匝的中心区域，以及包括多个匝的端部区域，其中线圈间距小于中心区域的线圈间距。 通过与靠近中心区域的转弯朝向最外侧的转动相同的变化，多个端部区域的线圈间距逐渐减小。 Deltap / p的值在0.015〜0.1的范围内，k / n在0.3〜0.8的范围内，其中p是中心区域的线圈间距，Deltap是端部区域的线圈间距变化，n 是灯丝的总匝数，k是端部区域的匝数之和。 k / n优选满足下列公式：<？in-line-formula description =“In-line Formulas”end =“lead”？> k / n = 0.72-4.66（Deltap / p）±0.12。 <？in-line-formula description =“In-line Formulas”end =“tail”？>
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公开(公告)号：US20070090744A1
公开(公告)日：2007-04-26
申请号：US11583747
申请日：2006-10-19
CPC分类号： H01J1/16 , H01J35/06 , H01J2201/2867
摘要： A filament for an X-ray tube has a varied wire diameter but has a constant coil outside diameter to obtain a good uniformity of the longitudinal temperature distribution of the filament. The filament has a wire diameter d which is gradually reduced from the longitudinal central region to the longitudinal ends while the coil outside diameter D is fixed along the longitudinal direction. The wire is polished at only the inside of the coil to reduce the wire diameter. In order to make the longitudinal temperature distribution uniform as far as possible, the difference Δd between the wire diameter dmax at the longitudinal central region and the wire diameter dmin at the longitudinal ends should satisfy the following limitation: Δd/dmax=0.041 to 0.145.
摘要翻译： 用于X射线管的灯丝具有变化的线径，但具有恒定的线圈外径以获得长丝的纵向温度分布的良好均匀性。 灯丝具有从纵向中心区域到纵向端部逐渐减小的线径d，而线圈外径D沿着纵向方向固定。 线材只在线圈内部抛光，以减少线径。 为了使纵向温度分布尽可能均匀，在纵向中心区域的线径d max max之间的差值Deltad与线径d < 纵向端应满足以下限制：<？in-line-formula description =“In-line formula”end =“lead”？> Deltad / d
= 0.041 to 0.145。 <？in-line-formula description =“In-line Formulas”end =“tail”？> -
公开(公告)号：US08873715B2
公开(公告)日：2014-10-28
申请号：US13194355
申请日：2011-07-29
申请人： Kiyoshi Ogata , Yoshihiro Takeda , Tetsuo Kani , Makoto Kanbe , Naohisa Osaka , Takahisa Sato
发明人： Kiyoshi Ogata , Yoshihiro Takeda , Tetsuo Kani , Makoto Kanbe , Naohisa Osaka , Takahisa Sato
CPC分类号： H01J35/16 , H01J35/065 , H01J2235/062 , H01J2235/16
摘要： An industrial X-ray tube formed by accommodating a cathode and anode in a container having an evacuated interior, in which electrons emitted from the cathode are caused to strike the anode and X-rays are emitted from the anode. The cathode is formed from graphite. The graphite is a layered crystal obtained by layering a plurality of carbon hexagonal planes. The graphite is cut based on crystal axes of the carbon hexagonal planes. The resulting cut surface is caused to function as an electron-emitting surface. For example, directions of an a- and b-crystal axis may be set so as to be arbitrary between each of the layers of the carbon hexagonal planes, the graphite may be cut along a surface parallel to the c-axis, and the resulting cut surface may be caused to function as an electron-emitting surface. The graphite may also be cut along a surface orthogonal to the c-axis.
摘要翻译： 通过将阴极和阳极容纳在具有抽空的内部的容器中形成的工业X射线管，其中从阴极发射的电子被引向阳极，并且从阳极发射X射线。 阴极由石墨形成。 石墨是通过层叠多个碳六角形平面而获得的层状晶体。 基于碳六角形平面的晶轴切割石墨。 使得到的切割表面用作电子发射表面。 例如，可以将a晶体轴和b晶轴的方向设定为在碳六角形平面的各层之间是任意的，可以沿着与c轴平行的表面切割石墨，并且由此产生 可能导致切割表面起电子发射表面的作用。 也可以沿着与c轴正交的表面切割石墨。
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公开(公告)号：US06456691B2
公开(公告)日：2002-09-24
申请号：US09797101
申请日：2001-03-01
IPC分类号： H01J3500
CPC分类号： B82Y10/00 , H01J35/065 , H01J35/14 , H01J2201/30469 , Y10S977/742 , Y10S977/844
摘要： An X-ray generator includes a cathode having an emitter made of carbon nanotubes which emits electrons by field emission and thus becomes a cold cathode electron emission source. In the invention using the carbon nanotubes, any one of the following three forms is adopted to control the tube current apart from the electron-focusing control. The first form is that a takeoff electrode is disposed near the cathode and the Wehnelt potential and the takeoff electrode potential are controlled independently. The second form is that an electron emission source is disposed behind the cathode and the electron emission source emits electrons which collide against the back of the cathode so that the cathode temperature is controlled in a range of the room temperature to about 100 degrees Celsius to regulate an amount of electron emission from the cathode. The third form is that the cathode has a heater so that the cathode temperature is controlled in a range of the room temperature to about 100 degrees Celsius to regulate an amount of electron emission from the cathode.
摘要翻译： X射线发生器包括具有由碳纳米管制成的发射体的阴极，该发射体通过场发射发射电子，从而成为冷阴极电子发射源。 在使用碳纳米管的本发明中，采用以下三种形式中的任一种来控制除电子聚焦控制之外的管电流。 第一种形式是在阴极附近配置起飞电极，独立地控制Wehnelt电位和起飞电极电位。 第二种形式是电子发射源设置在阴极后面，电子发射源发射与阴极背面相撞的电子，使阴极温度控制在室温至约100摄氏度的范围内以调节 来自阴极的电子发射量。 第三种形式是阴极具有加热器，使得阴极温度控制在室温至约100摄氏度的范围内以调节从阴极发射的电子的量。
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公开(公告)号：US5579364A
公开(公告)日：1996-11-26
申请号：US376877
申请日：1995-01-23
申请人： Naohisa Osaka , Toru Kobayashi
发明人： Naohisa Osaka , Toru Kobayashi
CPC分类号： H01J35/101
摘要： A rotating-anode X-ray tube has a rotary pipe rotatably supported in a casing, and a target which is fixed to one end of the rotary pipe and can rotate along with the rotary pipe, the target being cooled by a flow of cooling fluid. A cooling-fluid sealing device is provided between the casing and the rotary pipe and is a mechanical seal. The mechanical seal has a rotary ring which is rotatable along with the rotary pipe and axially movable, a stationary ring fixed to the casing, and pressing means for pressing the rotary ring against the stationary ring. The rotary and the stationary rings come into surface contact with each other within a plane perpendicular to an axis of rotation. The rotary ring is made of carbon and the stationary ring is made of silicon carbide ceramics, both materials being electrically conductive.
摘要翻译： 旋转阳极X射线管具有可旋转地支撑在壳体中的旋转管和固定到旋转管的一端并可与旋转管一起旋转的靶，靶被冷却流体流动 。 冷却流体密封装置设置在壳体和旋转管之间，并且是机械密封。 机械密封件具有旋转环，其可与旋转管一起旋转并且可轴向移动，固定到壳体的固定环以及用于将旋转环压靠在固定环上的按压装置。 旋转和静止环在垂直于旋转轴线的平面内彼此面接触。 旋转环由碳制成，固定环由碳化硅陶瓷制成，两种材料都是导电的。
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