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    • 12. 发明授权
    • Device for generating X-rays
    • 用于产生X射线的装置
    • US06925151B2
    • 2005-08-02
    • US10257996
    • 2002-01-30
    • Geoffrey HardingBernd DavidJens Peter SchlomkaLeonardus Petrus Maria TielemansWillem Potze
    • Geoffrey HardingBernd DavidJens Peter SchlomkaLeonardus Petrus Maria TielemansWillem Potze
    • H01J35/10H01J35/08H01J35/00
    • H01J35/08H01J2235/082
    • The invention relates to a device (1) for generating X-rays (57). The device comprises a source (7) for emitting electrons (53) and a liquid metal for emitting X-rays as a result of the incidence of electrons. The device further comprises a displacing member (11) for displacing the liquid metal through an impingement position (55) where the electrons emitted by the source impinge upon the liquid metal. As a result of the flow of liquid metal through the impingement position the heat, which is generated in the impingement position as a result of the incidence of the electrons upon the liquid metal, is transported away from the impingement position.According to the invention, the displacing member (11) has a contact surface (61), which is in contact with the liquid metal in the impingement position (55), and a driving member (31) for moving the contact surface in a direction which, in the impingement position, is substantially parallel to the contact surface. Thus the flow of liquid metal in the impingement position is achieved as a result of viscous shear forces in the liquid metal caused by friction forces between the liquid metal and the moving contact surface. As a result, the necessary pressure of the liquid metal is limited.
    • 本发明涉及一种用于产生X射线(57)的装置(1)。 该装置包括用于发射电子的源(7)和由于电子的入射而发射X射线的液态金属。 该装置还包括用于使液体金属移动通过冲击位置(55)移动的位移构件(11),其中由源发射的电子撞击在液态金属上。 作为液体金属流过冲击位置的结果,由于电子在液态金属上的入射而​​在冲击位置产生的热量被运送离开冲击位置。 根据本发明,移动构件(11)具有与冲击位置(55)中的液体金属接触的接触表面(61)和用于使接触表面沿方向移动的驱动构件(31) 其在冲击位置处基本上平行于接触表面。 因此,液态金属在冲击位置的流动是由于液态金属与可动接触面之间的摩擦力引起的液态金属中的粘性剪切力而实现的。 结果,液态金属的必要压力受到限制。
    • 16. 发明授权
    • Primary collimator and systems for x-ray diffraction imaging, and method for fabricating a primary collimator
    • 用于X射线衍射成像的主准直器和系统以及用于制造主准直器的方法
    • US07787591B2
    • 2010-08-31
    • US12325527
    • 2008-12-01
    • Geoffrey HardingHelmut Rudolf StreckerJohannes Delfs
    • Geoffrey HardingHelmut Rudolf StreckerJohannes Delfs
    • G01N23/20G21K1/02
    • G21K1/025G01V5/00
    • A primary collimator for a multiple inverse fan beam x-ray diffraction imaging (MIFB XDI) system. The MIFB XDI system includes a multi-focus x-ray source (MFXS) defining a plurality of focus points arranged along a length of the MFXS. Each focus point is sequentially activated to emit an x-ray fan beam including a plurality of primary beams each directed to a corresponding convergence point. The primary collimator includes a first diaphragm configured to be positioned with respect to the MFXS. The first diaphragm defines a plurality of first channels through a thickness of the first diaphragm. Each first channel is aligned with a corresponding focus point and configured to transmit the x-ray fan beam. A second diaphragm is positioned with respect to the first diaphragm and defines a plurality of second channels through a thickness of the second diaphragm. Each second channel is axially aligned with a corresponding first channel.
    • 用于多反向风扇束x射线衍射成像(MIFB XDI)系统的主准直器。 MIFB XDI系统包括定义沿着MFXS的长度布置的多个聚焦点的多焦点X射线源(MFXS)。 顺序地激活每个对焦点以发射包括多个主光束的x射线扇形束,每个主光束指向相应的会聚点。 主准直器包括构造成相对于MFXS定位的第一隔膜。 第一隔膜通过第一隔膜的厚度限定多个第一通道。 每个第一通道与对应的焦点对准,并且被配置成透射x射线扇形束。 第二隔膜相对于第一隔膜定位,并且通过第二隔膜的厚度限定多个第二通道。 每个第二通道与对应的第一通道轴向对准。
    • 17. 发明授权
    • Compact multi-focus x-ray source, x-ray diffraction imaging system, and method for fabricating compact multi-focus x-ray source
    • 紧凑型多焦点x射线源,x射线衍射成像系统和制造紧凑型多焦点x射线源的方法
    • US07756249B1
    • 2010-07-13
    • US12388907
    • 2009-02-19
    • Geoffrey Harding
    • Geoffrey Harding
    • G01N23/201
    • H01J35/02
    • A multi-focus x-ray source (MFXS) for a multiple inverse fan beam x-ray diffraction imaging (MIFB XDI) system. The MFXS includes a plurality of focus points (N) defined along a length of the MFXS collinear with the y-axis. The MFXS is configured to generate the plurality of primary beams, and at least M coherent x-ray scatter detectors are configured to detect coherent scatter rays from the primary beams as the primary beams propagate through a section of the object positioned within the examination area when a spacing P between adjacent coherent x-ray scatter detectors satisfies the equation: P = W s · V M · U , where Ws is a lateral extent of the plurality of focus points, U is a distance from the y-axis to a top surface of the examination area, and V is a distance from the top surface to the line at the coordinate X=L.
    • 用于多重反向风扇束x射线衍射成像(MIFB XDI)系统的多焦点x射线源(MFXS)。 MFXS包括沿着与y轴共线的MFXS的长度限定的多个聚焦点(N)。 MFXS被配置为产生多个主光束,并且至少M个相干X射线散射检测器被配置为当主光束传播通过位于检查区域内的物体的一部分时检测来自主光束的相干散射光线,当 相邻相干X射线散射探测器之间的间距P满足下式:P = W s·VM·U,其中Ws是多个聚焦点的横向范围,U是从y轴到顶面的距离 并且V是在坐标X = L处从顶面到线的距离。
    • 19. 发明申请
    • XRD-BASED FALSE ALARM RESOLUTION IN MEGAVOLTAGE COMPUTED TOMOGRAPHY SYSTEMS
    • 巨噬细胞计算机图像系统中基于XRD的错误报警分辨率
    • US20090323889A1
    • 2009-12-31
    • US12366844
    • 2009-02-06
    • Geoffrey HardingJoseph Bendahan
    • Geoffrey HardingJoseph Bendahan
    • G01N23/04
    • G01V5/00G21K1/02G21K2207/00
    • System and method for XRD-based false alarm resolution in computed tomography (“CT”) threat detection systems. Following a scan of an object with a megavoltage CT-based threat detection system, a suspicious area in the object is identified. The three dimensional position of the suspicious area is used to determine a ray path for the XRD-based threat detection system that provides minimal X-ray attenuation. The object is then positioned for XRD scanning of the suspicious area along this determined ray path. The XRD-based threat detection system is configured to detect high density metals (“HDMs) as well as shielded Special Nuclear Materials (“SNMs”) based on cubic or non-cubic diffraction profiles.
    • 计算机断层扫描(“CT”)威胁检测系统中基于XRD的误报警解决方法的系统和方法。 在使用基于兆伏级CT的威胁检测系统扫描物体后,识别对象中的可疑区域。 可疑区域的三维位置用于确定提供最小X射线衰减的基于XRD的威胁检测系统的射线路径。 然后将物体定位成沿着该确定的射线路径对可疑区域进行XRD扫描。 基于XRD的威胁检测系统被配置为基于立方或非立方衍射轮廓检测高密度金属(“HDM”)以及屏蔽特殊核材料(“SNM”)。