X-ray imaging using pixelated gas detectors

    公开(公告)号:US07106828B2

    公开(公告)日:2006-09-12

    申请号:US09994188

    申请日:2001-11-26

    IPC分类号: H05G1/64

    CPC分类号: G01N23/04 H01J47/02

    摘要: X-ray imaging systems are provided. A representative x-ray imaging system includes a gas detector that is configured to retain a volume of gas. The gas detector incorporates a first detection circuit corresponding to a first region of the gas and a second detection circuit corresponding to a second region of the gas. The first detection circuit is adapted to provide a first signal indicative of an intensity of x-rays radiating into the first region of the gas and the second detection circuit is adapted to provide a second signal indicative of an intensity of x-rays radiating into the second region of the gas. Methods and other systems also are provided.

    Capturing images of moving objects with a moving illumination point source
    4.
    发明授权
    Capturing images of moving objects with a moving illumination point source 失效
    用移动的照明点源拍摄移动物体的图像

    公开(公告)号:US06907103B2

    公开(公告)日:2005-06-14

    申请号:US10174737

    申请日:2002-06-19

    IPC分类号: G01N23/04

    CPC分类号: G01N23/04

    摘要: An imaging system that is capable of capturing images of moving objects as they are moving with minimal blurring by moving a point source of illumination such that the position from which illumination is projected is changed as the object moves to ensure that the position of the image projected onto an imaging plane remains substantially effectively stationary. The position from which illumination is projected functions as a point source of illumination. A image sensor of the imaging system is positioned in the imaging plane and receives illumination projected from the position of the illumination source that passes through the moving object. The image sensor produces electrical signals in response to the received illumination. Because the image of the moving object remains effectively stationary on the image sensor, which is located in the imaging plane, an image of at least a portion of the moving object can be constructed with minimal blurring and without having to halt the object to capture an image of it. Because it is not necessary to halt the object and allow the object to settle before capturing an image of it, the throughput of the imaging system is increased and the captured images are greatly improved.

    摘要翻译: 一种成像系统,其能够通过移动照明点光源来捕获运动物体移动时的图像,从而使照射投射的位置随着物体移动而改变,以确保投影图像的位置 在成像平面上保持基本上有效的静止。 投射照明的位置作为点光源。 成像系统的图像传感器位于成像平面中并接收从通过移动物体的照明源的位置投射的照明。 图像传感器响应于接收的照明产生电信号。 由于运动物体的图像在位于成像平面中的图像传感器上保持有效地静止,所以运动物体的至少一部分的图像可以以最小的模糊化而不必停止物体捕获 的形象。 因为在拍摄对象之前不需要停止物体并使物体稳定,所以成像系统的吞吐量增加,捕获的图像大大提高。