公开(公告)号：US11990308B2

公开(公告)日：2024-05-21

申请号：US18008016

申请日：2021-05-26

Applicant: MEIDENSHA CORPORATION

Inventor： Takumi Hayashi ,  Rena Takahashi ,  Hayato Ochi

IPC: H01J35/06 ,  H01J1/304 ,  H01J19/24

CPC classification number: H01J35/065 ,  H01J1/304 ,  H01J19/24 ,  H01J35/064 ,  H01J2235/062 ,  H01J2235/064

Abstract: Opening edge surface (45a) of an emitter supporting unit female screw bore (45) provided at an emitter supporting unit (4) extends along radial direction of the emitter supporting unit female screw bore (45). An emitter supporting unit operation hole (32) provided at a flange portion (30a) of a vacuum enclosure (11) has shape into which one selected from a position adjustment shaft (6) and a pressing shaft (9) can be inserted from their shaft tip sides. The position adjustment shaft is provided, on an outer circumferential surface of its tip (61), with a tip side male screw portion (61a) that can be screwed into the emitter supporting unit female screw bore (45). The pressing shaft has, at its tip (91), a tip surface (91a) having a larger diameter than an opening diameter of the emitter supporting unit female screw bore (45) and extending along radial direction of the pressing shaft.

公开(公告)号：US20180005796A1

公开(公告)日：2018-01-04

申请号：US15596303

申请日：2017-05-16

Applicant: Nanox Imaging PLC

Inventor： Koichi IIDA ,  Jun Yamasaki

IPC: H01J35/14 ,  H05G1/46 ,  H05G1/32 ,  H05G1/52 ,  H01J35/04

CPC classification number: H01J35/14 ,  H01J35/04 ,  H01J35/30 ,  H01J2235/062 ,  H05G1/32 ,  H05G1/46 ,  H05G1/52

Abstract: The X-ray tube disclosed herein includes an electron emission part including an electron emission element using a cold cathode; an anode part having an anode surface with which an electron emitted from the electron emission part collides; and a focusing structure disposed between the electron emission part and a target part disposed on the anode surface. The focusing structure has a plurality of focal point areas that are applied with a voltage in a mutually independent manner. The electron emission part has first and second electron beam emission areas that are on/off controlled in a mutually independent manner. The X-ray tube is designed in such a way that a collision area of the electron beam emitted from each of the first and second electron beam emission areas on the anode surface moves in response to a voltage applied to the focusing structure.

公开(公告)号：US08989351B2

公开(公告)日：2015-03-24

申请号：US13266478

申请日：2010-05-12

Applicant: Gereon Vogtmeier ,  Wolfgang Chrost

Inventor： Gereon Vogtmeier ,  Wolfgang Chrost

IPC: H05G1/56 ,  H01J35/14 ,  H01J35/30 ,  H01J35/06

CPC classification number: H01J35/06 ,  H01J35/14 ,  H01J2235/062 ,  H01J2235/068 ,  H01J2235/086

Abstract: The invention relates to an X-ray source (100) with an electron-beam-generator (120) for generating electron beams (B, B′) that converge towards a target (110). Thus the spatial distribution of X-ray focal spots (T, T′) on the target (110) can be made denser than the distribution of electron sources (121), wherein the latter is usually dictated by hardware limitations. The electron-beam-generator (120) may particularly comprise a curved emitter device (140) with a matrix of CNT based electron emitters (141) and an associated electrode device (130).

Abstract translation: 本发明涉及一种具有用于产生朝向目标（110）会聚的电子束（B，B'）的电子束发生器（120）的X射线源（100）。 因此，靶（110）上的X射线焦点（T，T'）的空间分布可以比电子源（121）的分布更致密，其中后者通常由硬件限制来决定。 电子束发生器（120）可以特别地包括具有基于CNT的电子发射器（141）和相关联的电极装置（130）的矩阵的弯曲发射器装置（140）。

公开(公告)号：US08983024B2

公开(公告)日：2015-03-17

申请号：US13194215

申请日：2011-07-29

Applicant: Tiezhi Zhang ,  Xiaochao Xu ,  Joshua Kim ,  Di Yan ,  Alvaro Martinez

Inventor： Tiezhi Zhang ,  Xiaochao Xu ,  Joshua Kim ,  Di Yan ,  Alvaro Martinez

IPC: A61B6/03 ,  G21K1/02 ,  A61B6/02 ,  A61B6/06 ,  A61B6/00 ,  H05G1/70

CPC classification number: G21K1/025 ,  A61B6/025 ,  A61B6/027 ,  A61B6/032 ,  A61B6/06 ,  A61B6/4007 ,  A61B6/4028 ,  A61B6/4064 ,  A61B6/4266 ,  A61B6/4441 ,  A61B6/4488 ,  A61B6/466 ,  G21K1/02 ,  H01J2235/062 ,  H01J2235/068 ,  H05G1/70

Abstract: A tetrahedron beam computed tomography system including an x ray source array that sequentially emits a plurality of x ray beams at different positions along a scanning direction and a collimator that intercepts the plurality of x-ray beams so that a plurality of fan-shaped x-ray beams emanate from the collimator towards an object. The system includes a first detector receiving a first set of fan-shaped x ray beams after they pass through the object, the first detector generating a first imaging signal for each of the received first set of fan-shaped x-ray beams and a second detector receiving a second set of fan-shaped x ray beams after they pass through the object, the second detector generating a second imaging signal for each of the received second set of fan-shaped x-ray beams. Each detector and source pair form a tetrahedral volume. In other embodiments, the system may also have more than two detectors arrays and/or more than one source array. Each pair of source array and detector array forms a tetrahedral volume. Using multiple detector arrays and source arrays can increase field of view, reduce the length of detector and source arrays so that the imaging system is more compact and mobile.

Abstract translation: 一种四面体束计算机断层摄影系统，包括沿着扫描方向在不同位置依次发射多个x射线束的x射线源阵列和截取多个x射线束的准直器，使得多个扇形x射线源阵列， 射线束从准直器发射到物体。 该系统包括第一检测器，其在通过物体之后接收第一组扇形X射线束，第一检测器为接收到的第一组扇形X射线束的每一个产生第一成像信号，第二检测器产生第二组 检测器在它们通过物体之后接收第二组扇形X射线束，第二检测器为接收到的第二组扇形X射线束的每一个生成第二成像信号。 每个检测器和源对形成四面体体积。 在其他实施例中，系统还可以具有多于两个的检测器阵列和/或多于一个源阵列。 每对源阵列和检测器阵列形成四面体积。 使用多个检测器阵列和源阵列可以增加视野，减少检测器和源阵列的长度，使成像系统更加紧凑和移动。

公开(公告)号：US08861682B2

公开(公告)日：2014-10-14

申请号：US13370478

申请日：2012-02-10

Applicant: Masahiko Okunuki ,  Osamu Tsujii ,  Takeo Tsukamoto

Inventor： Masahiko Okunuki ,  Osamu Tsujii ,  Takeo Tsukamoto

IPC: H01J35/06 ,  H01J35/18 ,  H01J35/16 ,  H01J35/08

CPC classification number: H01J35/065 ,  H01J35/08 ,  H01J35/16 ,  H01J35/18 ,  H01J2235/062 ,  H01J2235/068 ,  H01J2235/087 ,  H01J2235/166 ,  H01J2235/168

Abstract: A compact apparatus can form multi-X-ray beams with good controllability. Electron beams (e) emitted from electron emission elements (15) of a multi-electron beam generating unit (12) receive the lens effect of a lens electrode (19). The resultant electron beams are accelerated to the final potential level by portions of a transmission-type target portion (13) of an anode electrode (20). The multi-X-ray beams (x) generated by the transmission-type target portion (13) pass through an X-ray shielding plate (23) and X-ray extraction portions (24) in a vacuum chamber and are extracted from the X-ray extraction windows (27) of a wall portion (25) into the atmosphere.

Abstract translation: 紧凑的装置可以形成具有良好可控性的多X射线束。 从多电子束产生单元（12）的电子发射元件（15）发射的电子束（e）接收透镜电极（19）的透镜效应。 通过阳极电极（20）的透射型目标部分（13）的部分将所得的电子束加速到最终的电位。 由透射型目标部分（13）产生的多个X射线束（x）通过真空室中的X射线屏蔽板（23）和X射线提取部分（24），并从 壁部分（25）的X射线提取窗口（27）进入大气。

公开(公告)号：US08220993B2

公开(公告)日：2012-07-17

申请号：US12697965

申请日：2010-02-01

Applicant: Kenji Takahashi

Inventor： Kenji Takahashi

IPC: G01D18/00

CPC classification number: H01J35/06 ,  H01J2235/062 ,  H01J2235/068 ,  H01J2235/087

Abstract: Fan beams of radiation are output from a multiplicity of radiation sources. Radiation is output simultaneously only from a part of the radiation sources having irradiation ranges that neither overlap with each other nor are adjacent to each other. Image correction data corresponding to each group of radiation sources is obtained by sequentially outputting radiation to the radiographic image detector while the groups of radiation sources are sequentially switched without setting a subject. An effective area that has a value higher than a predetermined threshold value is determined for each image correction data. Radiation is sequentially output to the radiographic image detector in a state in which a subject is set while groups of radiation sources are switched. Radiation image data obtained based on the effective area, and which corresponds to each of the groups of radiation sources, is corrected based on the image correction data.

Abstract translation: 风扇辐射束从多个辐射源输出。 辐射仅从具有彼此不重叠或彼此相邻的照射范围的一部分辐射源同时输出。 通过在不设置被摄体的情况下顺序地切换辐射源群而顺序地向放射线照相图像检测器输出辐射，获得与各组辐射源对应的图像校正数据。 针对每个图像校正数据确定具有高于预定阈值的有效区域。 在切换了一组辐射源的状态下，放射线照相图像检测器依次输出辐射。 基于有效面积获得并且对应于每组辐射源的辐射图像数据根据图像校正数据被校正。

公开(公告)号：US20120163531A1

公开(公告)日：2012-06-28

申请号：US13194215

申请日：2011-07-29

Applicant: Tiezhi Zhang ,  Xiaochao Xu ,  Joshua Kim ,  Di Yan ,  Alvaro Martinez

Inventor： Tiezhi Zhang ,  Xiaochao Xu ,  Joshua Kim ,  Di Yan ,  Alvaro Martinez

IPC: A61B6/03

CPC classification number: G21K1/025 ,  A61B6/025 ,  A61B6/027 ,  A61B6/032 ,  A61B6/06 ,  A61B6/4007 ,  A61B6/4028 ,  A61B6/4064 ,  A61B6/4266 ,  A61B6/4441 ,  A61B6/4488 ,  A61B6/466 ,  G21K1/02 ,  H01J2235/062 ,  H01J2235/068 ,  H05G1/70

Abstract: A tetrahedron beam computed tomography system including an x ray source array that sequentially emits a plurality of x ray beams at different positions along a scanning direction and a collimator that intercepts the plurality of x-ray beams so that a plurality of fan-shaped x-ray beams emanate from the collimator towards an object. The system includes a first detector receiving a first set of fan-shaped x ray beams after they pass through the object, the first detector generating a first imaging signal for each of the received first set of fan-shaped x-ray beams and a second detector receiving a second set of fan-shaped x ray beams after they pass through the object, the second detector generating a second imaging signal for each of the received second set of fan-shaped x-ray beams. Each detector and source pair form a tetrahedral volume. In other embodiments, the system may also have more than two detectors arrays and/or more than one source array. Each pair of source array and detector array forms a tetrahedral volume. Using multiple detector arrays and source arrays can increase field of view, reduce the length of detector and source arrays so that the imaging system is more compact and mobile.

Abstract translation: 一种四面体束计算机断层摄影系统，包括沿着扫描方向在不同位置依次发射多个x射线束的x射线源阵列和截取多个x射线束的准直器，使得多个扇形x射线源阵列， 射线束从准直器发射到物体。 该系统包括第一检测器，其在通过物体之后接收第一组扇形X射线束，第一检测器为接收到的第一组扇形X射线束的每一个产生第一成像信号，第二检测器产生第二组 检测器在它们通过物体之后接收第二组扇形X射线束，第二检测器为接收到的第二组扇形X射线束的每一个生成第二成像信号。 每个检测器和源对形成四面体体积。 在其他实施例中，系统还可以具有多于两个的检测器阵列和/或多于一个源阵列。 每对源阵列和检测器阵列形成四面体积。 使用多个检测器阵列和源阵列可以增加视野，减少检测器和源阵列的长度，使成像系统更加紧凑和移动。

公开(公告)号：US20120140895A1

公开(公告)日：2012-06-07

申请号：US13370478

申请日：2012-02-10

Applicant: Masahiko Okunuki ,  Osamu Tsujii ,  Takeo Tsukamoto

Inventor： Masahiko Okunuki ,  Osamu Tsujii ,  Takeo Tsukamoto

IPC: H01J35/16

CPC classification number: H01J35/065 ,  H01J35/08 ,  H01J35/16 ,  H01J35/18 ,  H01J2235/062 ,  H01J2235/068 ,  H01J2235/087 ,  H01J2235/166 ,  H01J2235/168

Abstract: A compact apparatus can form multi-X-ray beams with good controllability. Electron beams (e) emitted from electron emission elements (15) of a multi-electron beam generating unit (12) receive the lens effect of a lens electrode (19). The resultant electron beams are accelerated to the final potential level by portions of a transmission-type target portion (13) of an anode electrode (20). The multi-X-ray beams (x) generated by the transmission-type target portion (13) pass through an X-ray shielding plate (23) and X-ray extraction portions (24) in a vacuum chamber and are extracted from the X-ray extraction windows (27) of a wall portion (25) into the atmosphere.

Abstract translation: 紧凑的装置可以形成具有良好可控性的多X射线束。 从多电子束产生单元（12）的电子发射元件（15）发射的电子束（e）接收透镜电极（19）的透镜效应。 通过阳极电极（20）的透射型目标部分（13）的部分将所得的电子束加速到最终的电位。 由透射型目标部分（13）产生的多个X射线束（x）通过真空室中的X射线屏蔽板（23）和X射线提取部分（24），并从 壁部分（25）的X射线提取窗口（27）进入大气。

公开(公告)号：US08143774B2

公开(公告)日：2012-03-27

申请号：US11988504

申请日：2006-07-06

Applicant: Qiu-Hong Hu

Inventor： Qiu-Hong Hu

IPC: H01J1/00

CPC classification number: H01J9/025 ,  H01J1/304 ,  H01J35/065 ,  H01J63/02 ,  H01J2235/062

Abstract: According to example embodiments, a method for manufacturing a field emission cathode includes providing a liquid compound comprising a liquid phenolic resin and at least one of a metal salt and a metal oxide arranging a conductive cathode support in a vicinity of the liquid compound, and heating the liquid compound. Heating the liquid compound transforms the liquid compound into a solid compound foam.

Abstract translation: 根据示例性实施例，一种用于制造场致发射阴极的方法包括提供液体化合物，其包含液体酚醛树脂和在液体化合物附近布置导电阴极支撑体的金属盐和金属氧化物中的至少一种，以及加热 液体化合物。 加热液体化合物将液体化合物转化为固体复合泡沫。

公开(公告)号：US20110255664A1

公开(公告)日：2011-10-20

申请号：US13053002

申请日：2011-03-21

Applicant: Kazuyuki Ueda ,  Osamu Tsujii ,  Takao Ogura ,  Ichiro Nomura

Inventor： Kazuyuki Ueda ,  Osamu Tsujii ,  Takao Ogura ,  Ichiro Nomura

IPC: G01N23/04 ,  H01J35/00

CPC classification number: H01J35/065 ,  H01J35/08 ,  H01J35/16 ,  H01J35/18 ,  H01J35/20 ,  H01J2235/062 ,  H01J2235/068 ,  H01J2235/087 ,  H01J2235/163 ,  H01J2235/186 ,  H01J2235/205

Abstract: An X-ray source includes an electron-beam generating unit that generates an electron beam, and a transmission type target electrode to be irradiated with the electron beam to generate X-ray radiation. A plurality of convex portions each having an inclined surface with respect to an incident direction of the electron beam is formed on a surface of the transmission type target electrode.

Abstract translation: X射线源包括产生电子束的电子束产生单元和用电子束照射以产生X射线辐射的透射型靶标电极。 在透射型目标电极的表面上形成有多个相对于电子束的入射方向具有倾斜面的凸部。