PHASE CONTRAST IMAGING METHOD AND APPARATUS
    81.
    发明申请
    PHASE CONTRAST IMAGING METHOD AND APPARATUS 有权
    相位对比成像方法和装置

    公开(公告)号:US20110024624A1

    公开(公告)日:2011-02-03

    申请号:US12920161

    申请日:2009-02-16

    IPC分类号: H01L31/09 H01L31/0232

    CPC分类号: G01N21/3581

    摘要: A method for phase contrast imaging comprises: illuminating an object by terahertz radiation such that the terahertz radiation interacts with the object; illuminating a diffraction grating by the terahertz radiation that has interacted with the object; translating the diffraction grating along the direction of the grating wave vector, to measure, for each of different grating positions, an intensity distribution of the terahertz radiation that has interacted with the object and with the grating in a diffraction field; and retrieving a phase contrast image of the object from the intensity distributions. An apparatus for phase contrast imaging comprises: a terahertz radiation emitter for generating terahertz radiation, which illuminates an object to interact with the object; a diffraction grating, which is illuminated by the terahertz radiation that has interacted with the object; a terahertz radiation detector for measuring, for each of different grating positions, an intensity distribution of the terahertz radiation that has interacted with the object and with the grating in a diffraction field; and a data collecting and processing system for retrieving a phase contrast image of the object from the intensity distributions.

    摘要翻译: 一种用于相位对比成像的方法包括:用太赫兹辐射照射物体,使得太赫兹辐射与物体相互作用; 用与物体相互作用的太赫兹辐射照射衍射光栅; 沿着光栅波矢的方向平移衍射光栅,以测量每个不同的光栅位置,在衍射场中与物体和光栅相互作用的太赫兹辐射的强度分布; 以及从所述强度分布中检索所述对象的相位对比图像。 用于相位对比成像的装置包括:太赫兹辐射发射器,用于产生太赫兹辐射,其照亮物体与物体相互作用; 衍射光栅,其被与物体相互作用的太赫兹辐射照射; 太赫兹辐射检测器,用于针对每个不同的光栅位置,在衍射场中测量与物体和光栅相互作用的太赫兹辐射的强度分布; 以及用于从强度分布中检索对象的相位对比图像的数据收集和处理系统。

    Method and apparatus for measuring terahertz time-domain spectroscopy
    83.
    发明授权
    Method and apparatus for measuring terahertz time-domain spectroscopy 有权
    用于测量太赫兹时域光谱的方法和装置

    公开(公告)号:US07675037B2

    公开(公告)日:2010-03-09

    申请号:US11964363

    申请日:2007-12-26

    IPC分类号: G01J5/02

    摘要: A method and an apparatus for measuring terahertz time-domain spectrum, which relate to the field of terahertz time-domain spectrum. The method comprises the steps of: generating a first pulse laser beam from a first femtosecond laser device at a preset repetition frequency to generate THz pulses; generating a second pulse laser beam from a second femtosecond laser device at the repetition frequency; measuring electric field intensities of the THz pulses at respective phase differences between the first pulse laser beam and the second pulse laser beam; and obtaining a THz time-domain spectroscopy by performing Fourier transformation of data representative of the electric field intensities. THz spectrum measured according to the method and apparatus improves spectroscopy resolution and provides a broader detection range.

    摘要翻译: 一种用于测量太赫兹时域光谱的方法和装置,涉及太赫兹时域光谱领域。 该方法包括以下步骤:以预设的重复频率从第一飞秒激光装置产生第一脉冲激光束以产生THz脉冲; 以重复频率从第二飞秒激光装置产生第二脉冲激光束; 在第一脉冲激光束和第二脉冲激光束之间的相位差测量THz脉冲的电场强度; 并且通过对代表电场强度的数据进行傅里叶变换来获得THz时域光谱。 根据方法和装置测量的太赫兹光谱提高了光谱分辨率,并提供了更广泛的检测范围。

    Imaging system
    84.
    发明申请
    Imaging system 有权
    成像系统

    公开(公告)号:US20070116177A1

    公开(公告)日:2007-05-24

    申请号:US11545255

    申请日:2006-10-10

    IPC分类号: G01N23/04

    CPC分类号: G01N23/04 A61B6/027

    摘要: It is disclosed an imaging system comprising: radiation generating means including at least one radiation source for generating radiations; data acquiring means including an detector matrix faced the radiation source for obtaining projection data by receiving radiations penetrated through an object to be inspected; transporting means for making the object to be inspected between the radiation source and the detector matrix linearly moving relative to the radiation source and the detector matrix; and controlling and image processing means for controlling the radiation generating means, the data acquiring means and the transporting means, and for reconstructing an image of the object to be inspected from the projection data. The imaging system according to the present invention achieves a real stereoscopic radiography by using straight-line trajectory scan and reconstructing a tomographic or stereoscopic image through a straight-line filtered back-projection algorithm. The present imaging system has advantages of fast examination speed, no rotation, and out of large cone-angle problem in a circular-orbit cone-beam CT.

    摘要翻译: 公开了一种成像系统,包括:辐射发生装置,其包括用于产生辐射的至少一个辐射源; 数据获取装置,包括面向辐射源的检测器矩阵,用于通过接收穿过待检查对象的辐射来获得投影数据; 用于使所述物体在所述辐射源和所述检测器矩阵之间相对于所述辐射源和所述检测器矩阵线性移动的传送装置; 以及控制和图像处理装置,用于控制辐射发生装置,数据获取装置和传送装置,并用于从投影数据重建待检查对象的图像。 根据本发明的成像系统通过使用直线轨迹扫描并通过直线过滤的反投影算法重建断层摄影或立体图像来实现真正的立体放射照相。 本发明的成像系统在圆锥轨道锥形CT中具有检测速度快,无旋转和大锥角问题的优点。

    Dual-array detector module
    85.
    发明申请
    Dual-array detector module 有权
    双阵列检测器模块

    公开(公告)号:US20060273259A1

    公开(公告)日:2006-12-07

    申请号:US11444190

    申请日:2006-05-31

    IPC分类号: G01T1/00

    CPC分类号: G01N23/04

    摘要: The present invention discloses a dual array detector module adapted to radiation-imaging, comprising: a first detector array consisting of a plurality of first detectors and arranged on a first surface of a heavy metal plate; a second detector array consisting of a plurality of second detectors and arranged on a second surface of the heavy metal plate, the second surface is opposite to the first surface; and a mounting frame, in which the first detector array and the second detector array arranged on the first and second surfaces of the heavy metal plate respectively are mounted in the mounting frame. The dual array detector module according to the present invention is simple in structure and convenient for mounting and maintenance, so that a great economic benefit can be obtained by improving the structure simply and increasing a little of investment.

    摘要翻译: 本发明公开了一种适用于辐射成像的双阵列检测器模块,包括:由多个第一检测器组成的第一检测器阵列,并布置在重金属板的第一表面上; 第二检测器阵列,由多个第二检测器组成,并布置在重金属板的第二表面上,第二表面与第一表面相对; 以及安装框架,其中分别布置在重金属板的第一和第二表面上的第一检测器阵列和第二检测器阵列安装在安装框架中。 根据本发明的双阵列检测器模块结构简单,便于安装和维护,从而通过简单地改进结构和增加一点投资来获得巨大的经济效益。

    Method and apparatus for liquid safety-detection by backscatter with a radiation source
    86.
    发明申请
    Method and apparatus for liquid safety-detection by backscatter with a radiation source 有权
    用辐射源通过后向散射进行液体安全检测的方法和装置

    公开(公告)号:US20060133566A1

    公开(公告)日:2006-06-22

    申请号:US11285395

    申请日:2005-11-23

    IPC分类号: G01N23/04

    摘要: A method and an apparatus for liquid safety-detection by backscatter with a radiation source relate to a radiation detecting technology field. The invention comprises using a radiation source, a collimator, a detector, a data collector and a computer data processor, and has the main steps of: 1) a liquid article to be detected being placed onto a rotatable platform; 2) the ray emitted from the radiation source causing Compton scattering at the surface of the liquid after passing through the package layer of the liquid article; 3) the scattering photons being received by the detector after passing the collimator; 4) the detector transmitting the received data to the data collector; and 5) the data collector transmitting the amplified and shaped data to the computer data processor, which processes the data to obtain the liquid density of the detected article, then compares the result with the densities of dangerous articles in a current database, and gives warning if finding that the density of the detected article is consistent with that of a dangerous article. Comparing to the prior art, the invention has a convenient use, a rapid and accurate detection, a strong anti-interference, a high use safety and reliability, and an easy protection.

    摘要翻译: 用于通过具有辐射源的后向散射进行液体安全检测的方法和装置涉及辐射检测技术领域。 本发明包括使用辐射源,准直仪,检测器,数据采集器和计算机数据处理器,并且具有以下主要步骤:1)待检测的液体物品被放置在可旋转平台上; 2)从辐射源发出的射线,在液体物品的包装层穿过液体表面后会引起康普顿散射; 3)散射光子在通过准直仪之后被检测器接收; 4)检测器将接收的数据发送到数据采集器; 5)数据收集器将放大和成形数据发送到计算机数据处理器,处理数据以获得检测到的物品的液体密度,然后将结果与当前数据库中的危险物品的密度进行比较,并给出警告 如果发现检测到的物品的密度与危险物品的密度一致。 与现有技术相比,本发明方便使用,检测快速准确,抗干扰性强,使用安全可靠,易于保护。

    Boron coated neutron detector and method for manufacturing the same
    87.
    发明授权
    Boron coated neutron detector and method for manufacturing the same 有权
    硼涂层中子探测器及其制造方法

    公开(公告)号:US09470804B2

    公开(公告)日:2016-10-18

    申请号:US14112692

    申请日:2012-04-13

    IPC分类号: G01T3/00

    摘要: A boron-coated neutron detector, comprising a cathode tube with a plurality of passages formed therein along its longitudinal direction, the inner wall of each passage being coated with boron material; an electrode wire serving as an anode and arranged longitudinally in each of the passages, the electrode wire adapted to be applied with high voltage; and an insulating end plate to which each end of the cathode tube is fixed, the electrode wire being fixed to the cathode tube via the insulating end plate. Preferably, the cathode tube is formed by jointing a plurality of boron-coated substrates. The boron-coated neutron detector increases the detection efficiency of the neutron detector, which may reach or even exceed the detection efficiency of the 3He neutron detector of the same size, and the cost thereof is much cheaper than the 3He neutron detector.

    摘要翻译: 一种硼涂覆的中子探测器,包括阴极管,其阴极管沿着其纵向方向形成在其中,多个通道在其中形成,每个通道的内壁涂有硼材料; 用作阳极的电极线,并且纵向地布置在每个通道中,电极线适于施加高电压; 以及绝缘端板,阴极管的每一端固定在该绝缘端板上,电极线通过绝缘端板固定在阴极管上。 优选地,阴极管通过连接多个硼涂覆的基底而形成。 硼覆盖的中子检测器提高了中子检测器的检测效率,这可能达到或甚至超过相同尺寸的3He中子检测器的检测效率,并且其成本比3He中子检测器便宜得多。

    X-ray source grating stepping imaging system and image method
    88.
    发明授权
    X-ray source grating stepping imaging system and image method 有权
    X射线源光栅步进成像系统和图像方法

    公开(公告)号:US09134259B2

    公开(公告)日:2015-09-15

    申请号:US13641542

    申请日:2010-12-27

    IPC分类号: G01N23/00 G01N23/04 A61B6/00

    摘要: An X-ray imaging system comprising: an X-ray source, a source grating, a fixed grating module and an X-ray detector, which are successively positioned in the propagation direction of X-ray; an object to be detected is positioned between the source grating and the fixed gating module; said source grating can perform stepping movement in a direction perpendicular to the optical path and grating stripes; wherein the system further comprises a computer workstation for controlling said X-ray source, source grating and X-ray detector so as to perform the following processes: the source grating performs stepping movement in at least one period thereof; at each stepping step, the X-ray source emits X-ray to the object to be detected, and the detector receives the X-ray at the same time; wherein after at least one period of stepping and data acquisition, the light intensity of X-ray at each pixel point on the detector is represented as a light intensity curve; the light intensity curve at each pixel point on the detector is compared with a light intensity curve in the absence of the object to be detected, a pixel value of each pixel point is calculated from change in said light intensity curve; an image of the detected object is reconstructed according to the calculated pixel value.

    摘要翻译: 一种X射线成像系统,包括:X射线源,源光栅,固定光栅模块和X射线检测器,其依次位于X射线的传播方向上; 要检测的物体位于源光栅和固定门控模块之间; 所述源光栅可以在垂直于光路和光栅条纹的方向上执行步进运动; 其中所述系统还包括用于控制所述X射线源,源光栅和X射线检测器的计算机工作站,以便执行以下处理:源光栅在其至少一个周期中执行步进运动; 在每个步进步骤中,X射线源向被检测物体发射X射线,并且检测器同时接收X射线; 其中在步进和数据采集的至少一个周期之后,将检测器上每个像素点处的X射线的光强度表示为光强度曲线; 将检测器上的每个像素点处的光强度曲线与不存在待检测对象的光强度曲线进行比较,根据所述光强度曲线的变化计算每个像素点的像素值; 根据计算出的像素值重建被检测物体的图像。

    Ion collecting device for ion mobility spectrometer and ion mobility spectrometer
    89.
    发明授权
    Ion collecting device for ion mobility spectrometer and ion mobility spectrometer 有权
    用于离子迁移谱仪和离子迁移谱仪的离子收集装置

    公开(公告)号:US08698073B2

    公开(公告)日:2014-04-15

    申请号:US12997751

    申请日:2010-06-28

    IPC分类号: H01J49/26

    CPC分类号: G01N27/622

    摘要: The present invention provides an ion collection device for an ion mobility spectrometer and an ion mobility spectrometer. The ion collection device comprises: an aperture grid for restraining influence of ion drift movement in a drift region on ion collection; and a first electrode disposed at a downstream side of the aperture grid in an ion drift direction, the first electrode is mechanically and electrically coupled with the aperture grid. With the above configuration, the aperture grid and the first electrode are at the same electric potential, and form a focusing electrical field with an ion collection part. Therefore, ions entering the collection region will not scatter into a shield cover.

    摘要翻译: 本发明提供了一种用于离子迁移谱仪和离子迁移谱仪的离子收集装置。 离子收集装置包括:孔径格栅,用于限制离子收集在漂移区域中的离子漂移运动的影响; 以及设置在所述孔格栅的离子漂移方向的下游侧的第一电极,所述第一电极与所述孔格栅机械地电耦合。 利用上述结构,孔径栅格和第一电极处于相同的电位,并且与离子收集部分形成聚焦电场。 因此,进入收集区域的离子将不会散射到屏蔽罩中。

    SAMPLE FEEDING DEVICE FOR TRACE DETECTOR AND TRACE DETECTOR WITH SAMPLE FEEDING DEVICE
    90.
    发明申请
    SAMPLE FEEDING DEVICE FOR TRACE DETECTOR AND TRACE DETECTOR WITH SAMPLE FEEDING DEVICE 有权
    跟踪检测器和跟踪检测器的样品送料装置与样品送料装置

    公开(公告)号:US20120168620A1

    公开(公告)日:2012-07-05

    申请号:US13142523

    申请日:2011-05-16

    IPC分类号: H01J49/40 H01J49/00

    CPC分类号: G01N27/622

    摘要: A sample feeding device for a trace detector is disclosed. The sample feeding device comprises: a sample feeding chamber disposed in the sample feeding device to desorb a sample from a sample feeding member; and a valve assembly configured to fluidly communicate the sample feeding chamber with a drift tube of the trace detector during feeding sample. With the above configuration of the present invention, for example, the sensitivity of the detector can be increased by improving the permeation ratio of the sample. In addition, interior environment of the drift tube is isolated from exterior environment to avoid a drift region of the drift tube from being polluted. The important parameters, such as sensitivity, a position of a peak of a substance, a resolution, of the detector can be kept constant. As a result, operation reliability and consistency of the detector can be achieved.

    摘要翻译: 公开了一种用于跟踪检测器的采样馈送装置。 样品供给装置包括:样品供给室,设置在样品供给装置中,以从样品供给部件解吸样品; 以及阀组件,其构造成在进给样品期间将样品供给室与迹线检测器的漂移管流体连通。 利用本发明的上述结构,例如可以通过提高样品的透过率来提高检测器的灵敏度。 此外,漂移管的内部环境与外部环境隔离,以避免漂移管的漂移区域被污染。 可以保持检测器的重要参数,如灵敏度,物质峰的位置,分辨率等。 结果,可以实现检测器的操作可靠性和一致性。