公开(公告)号：US5459394A

公开(公告)日：1995-10-17

申请号：US113535

申请日：1993-08-27

申请人： Cornelis G. C. M. De Kort ,  Joris J. Vrehen ,  Gert W. t Hooft

发明人： Cornelis G. C. M. De Kort ,  Joris J. Vrehen ,  Gert W. t Hooft

IPC分类号： G01R15/22 ,  G01R1/07 ,  G01R31/302 ,  G01R31/308 ,  G01R31/319 ,  G01R31/00

CPC分类号： G01R31/308 ,  G01R1/071

摘要： An electro-optical measurement device for the sampling of an electric signal (SI) in an electronic component by means of a radiation beam. Special embodiments of the electro-optic measurement device are described. An electro-optic sensor element is provided with an electrically conductive tip at one side and with an electrode at the other side, so that an absolute and calibrated measurement is possible. The measurement beam can be high-frequency pulsed with a pulse (Lp) per period of the test signal (SI). The pulse series is low-frequency modulated and the pulses exhibit, relative to the test signal, a constant phase relationship during the first half periods of the modulation signal and a varying phase relationship during the second half periods so that accurate and reliable measurement is possible.

摘要翻译： 一种用于通过辐射束对电子部件中的电信号（SI）进行采样的电光测量装置。 描述电光测量装置的特殊实施例。 电光传感器元件在一侧设置有导电尖端，并且在另一侧设置有电极，使得绝对和校准的测量是可能的。 测量光束可以在每个测试信号（SI）的周期内用脉冲（Lp）进行高频脉冲。 脉冲序列是低频调制的，相对于测试信号，脉冲在调制信号的前半个周期期间呈现恒定的相位关系，并且在后半个周期期间呈现出改变的相位关系，从而可以进行准确可靠的测量 。

公开(公告)号：US5907406A

公开(公告)日：1999-05-25

申请号：US909917

申请日：1997-08-12

申请人： Dimitrios Papaioannou ,  Gert W. t Hooft ,  Martinus B. Van Der Mark ,  Sel B. Colak

发明人： Dimitrios Papaioannou ,  Gert W. t Hooft ,  Martinus B. Van Der Mark ,  Sel B. Colak

IPC分类号： G01N21/17 ,  A61B5/00 ,  A61B10/00 ,  G01N21/47 ,  G01N21/49 ,  G01B21/00

CPC分类号： A61B5/0091 ,  A61B5/4312 ,  G01N21/4795

摘要： A device for imaging a turbid medium, for example a breast of a female, includes a holder for receiving the turbid medium, a light source, a photodetector and a processing unit for deriving the image from the intensities measured. The holder is adapted to receive besides the turbid medium also an adaptation medium having substantial identical optical parameters as the optical parameters of the turbid medium. In this way artefacts in the reconstructed image due to the boundary effect between the turbid medium and the holder can be reduced. When a liquid is used as the adaptation medium a perfect match between the holder and the shape of the turbid medium can be obtained. Further, also intensity differences in the image due to different path lengths between light source and photodetector can be equalized.

摘要翻译： 用于对浑浊介质（例如女性的乳房）进行成像的装置包括用于接收浑浊介质的保持器，光源，光电检测器和用于从测量的强度导出图像的处理单元。 保持器适于接收混浊介质以外还具有与混浊介质的光学参数基本上相同的光学参数的适配介质。 以这种方式，可以减少由于混浊介质和保持器之间的边界效应引起的重建图像中的伪像。 当使用液体作为适应介质时，可以获得保持器与混浊介质的形状之间的完美匹配。 此外，由于光源和光电检测器之间的不同路径长度的图像中的强度差也可以相等。

公开(公告)号：US5807262A

公开(公告)日：1998-09-15

申请号：US770031

申请日：1996-12-19

申请人： Dimitrios Papaioannou ,  Gert W. t Hooft

发明人： Dimitrios Papaioannou ,  Gert W. t Hooft

IPC分类号： G01N21/17 ,  A61B5/00 ,  A61B10/00 ,  G01N21/27 ,  G01N21/35 ,  A61B5/05

CPC分类号： A61B5/0091 ,  A61B5/4312

摘要： A device (700) for localizing an object (726) in a turbid medium (710) includes one light source (722) and two detectors (723,724), being symmetrically situated relatively to the light source (722), around a turbid medium (710). By applying a pulse modulated light source an optimal frequency could be determined to perform measurement at optimal sensitivity of the system. To enable a fast scanning system that could be used in for example mammography, a plurality of light sources (1209) and plurality of detectors (1201 to 1208) could be used. A processing system (105) selects then repetitively one light source (1209) and a different detector pairs, that are symmetrically situated relatively towards the light source (1209). Another embodiment that could be used in the mammography includes rotating mirrors (1303,1309) to scan a measuring space (1304) adapted to contains an object (1305), for example a human breast. The detector used in this embodiment includes a streak camera (1313). A lens (1308) and one of the rotating mirrors (1309) images two exit locations (1306,1307) of the measuring space (1304) that are symmetrically situated toward an entrance location (1303) of the measuring space on the entrance slit (1312) of the streak camera (1313). The output-image (1315) of the streak camera (1313) is imaged by an image pick-up device (1316) and processed by a processing system (1318) to obtain an image of the object in the measuring space (1304). A monitor (1319) displays the obtained image.

摘要翻译： 用于将浑浊介质（710）中的物体（726）定位的装置（700）包括一个光源（722）和两个相对于光源（722）对称定位的检测器（723,724），围绕浑浊介质 710）。 通过应用脉冲调制光源，可以确定最佳频率以在系统的最佳灵敏度下进行测量。 为了实现可用于例如乳房X线照相术的快速扫描系统，可以使用多个光源（1209）和多个检测器（1201至1208）。 处理系统（105）重复地选择一个相对于光源（1209）对称定位的一个光源（1209）和不同的检测器对。 可用于乳房X线照相术的另一实施例包括旋转镜（1303,1309）以扫描适于包含物体（1305）的测量空​​间（1304），例如人乳房。 本实施例中使用的检测器包括条纹相机（1313）。 透镜（1308）和旋转镜（1309）中的一个将测量空间（1304）的两个出口位置（1306,1307）映射成对称地位于入口狭缝上的测量空间的入口位置（1303） 1312）。 条纹照相机（1313）的输出图像（1315）由图像拾取装置（1316）成像，并由处理系统（1318）进行处理，以获得测量空间中的物体的图像（1304）。 显示器（1319）显示所获得的图像。