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15 条记录 (耗时 0.021 秒)

    Flat panel display device using thin diamond electron beam amplifier
    1.
    发明授权
    Flat panel display device using thin diamond electron beam amplifier 失效
    平板显示设备采用薄金刚石电子束放大器

    公开(公告)号：US6005351A

    公开(公告)日：1999-12-21

    申请号：US856381

    申请日：1997-05-14

    申请人： Lawrence H. Sverdrup ,  Shiow-Hwa Lin ,  Eric J. Korevaar ,  Brett A. Spivey ,  Kenneth Y. Tang

    发明人： Lawrence H. Sverdrup ,  Shiow-Hwa Lin ,  Eric J. Korevaar ,  Brett A. Spivey ,  Kenneth Y. Tang

    IPC分类号： H01J1/32 ,  H01J29/48 ,  H01J43/02 ,  H03F3/54

    CPC分类号： H01J1/32 ,  H01J29/482 ,  H01J43/02

    摘要： A thin diamond electron beam amplifier. The illumination side of a thin diamond is illuminated by a seed electron beam creating electron-hole pairs in the diamond. A voltage potential provides an electric field between the illumination side of the diamond and an acceleration grid opposite the emission side of the diamond. Electrons released in the diamond are accelerated through the emission side of the diamond toward the acceleration grid creating an amplified electron beam. Preferred embodiments of the present invention are useful to provide flat panel displays and replacements for thermionic cathodes, cathode ray tubes, fast photodetectors and image intensifiers.

    摘要翻译： 薄金刚石电子束放大器。 金刚石的照明面由种子电子束照射，在金刚石中产生电子 - 空穴对。 电压电位在金刚石的照明侧和与金刚石的发射侧相对的加速栅之间提供电场。 在金刚石中释放的电子通过金刚石的发射侧朝加速度格栅加速，产生放大的电子束。 本发明的优选实施例可用于提供用于热阴极阴极射线管，快速光电检测器和图像增强器的平板显示器和替代物。

    Wide field optical system
    4.
    发明授权
    Wide field optical system 失效
    宽视场光学系统

    公开(公告)号：US4883348A

    公开(公告)日：1989-11-28

    申请号：US204902

    申请日：1988-06-10

    申请人： Brett A. Spivey ,  Brian W. Neff ,  Murray R. Dunn

    发明人： Brett A. Spivey ,  Brian W. Neff ,  Murray R. Dunn

    IPC分类号： G02B17/02 ,  G02B17/06 ,  G02B23/06 ,  G02B26/10

    CPC分类号： G02B26/10 ,  G02B17/02 ,  G02B17/061 ,  G02B23/06

    摘要： A telescope with a spherical primary mirror and a movable secondary optical element which is positioned at various locations near the focal plane of the primary mirror and directs a portion of the focused radiation to a coude optics device at the center of curvature of the primary mirror. The coude optics device reflects the focused radiation to a detector. In a preferred embodiment of this invention a field of several degrees can be scanned very rapidly while viewing much smaller object fields.

    摘要翻译： 具有球形初级反射镜和可移动次级光学元件的望远镜，其位于主反射镜的焦平面附近的各个位置，并将聚焦辐射的一部分引导到主镜的曲率中心处的光学设备。 粗糙光学器件将聚焦的辐射反射到检测器。 在本发明的优选实施例中，可以非常快速地扫描几度的场，同时观察更小的对象场。

    Doppler imaging device
    6.
    发明授权
    Doppler imaging device 失效
    多普勒成像装置

    公开(公告)号：US5357964A

    公开(公告)日：1994-10-25

    申请号：US14856

    申请日：1993-02-08

    申请人： Brett A. Spivey ,  Peter J. Martin ,  Douglas A. Palmer ,  Todd K. Barrett

    发明人： Brett A. Spivey ,  Peter J. Martin ,  Douglas A. Palmer ,  Todd K. Barrett

    IPC分类号： A61B8/00 ,  A61B8/06 ,  G01P5/00 ,  G01S15/89

    CPC分类号： A61B8/4281 ,  A61B8/06 ,  G01P5/001 ,  G01S15/8979

    摘要： A device and method for producing an image of a fluid moving through a medium. An acoustic wave insonifies the medium to produce Doppler shifted scattering from randomly located scatterers in the moving fluid. At least eight channels of acoustic detectors detect signals reflected from the medium and the amplitudes of the scattered signal is determined at each channel for at least one Doppler shifted frequency. Time averaged channel-to-channel amplitude correlations are produced using the Doppler shifted amplitude data from which the image of the moving fluid is calculated.

    摘要翻译： 一种用于产生流过介质的流体的图像的装置和方法。 声波使介质不稳定，从移动流体中随机定位的散射体产生多普勒偏移散射。 至少八个声道检测器通道检测从介质反射的信号，并且在每个通道处确定用于至少一个多普勒频移的散射信号的振幅。 使用从其计算移动流体的图像的多普勒偏移幅度数据产生时间平均的信道间信道幅度相关。

    Laser wavefront measurement device utilizing crossed Ronchi gratings
    7.
    发明授权
    Laser wavefront measurement device utilizing crossed Ronchi gratings 失效
    激光波前测量装置利用交叉的Ronchi光栅

    公开(公告)号：US4670646A

    公开(公告)日：1987-06-02

    申请号：US744169

    申请日：1985-06-12

    申请人： Brett A. Spivey

    发明人： Brett A. Spivey

    IPC分类号： G01J9/02 ,  G01J1/10

    CPC分类号： G01J9/0215

    摘要： A wavefront, such as from a laser, is sampled, preferably at a beam splitter to break off only a fraction of the total light energy. The sampled beam is adjusted and sized--either by expansion or contraction at a conventional telescope--and thereafter sent through paired crossed Ronchi gratings and onto a CCD camera located at the first wave distance of constructive interference from the crossed Ronchi gratings. The crossed Ronchi gratings--in the order of 200 lines per inch and preferably with 200 equally spaced gaps per inch--project an array of square spots onto the focus of the CCD camera. The image of the array of square spots at the CCD camera is frozen via a frame grabber and digitized in a conventional format. The digitized image is played through a disclosed computer program to locate the spots. Thereafter, the located spots are compared to a standard spots. By knowing the difference between spot location of the standard spots and spot location of the suspect spots, wavefront analysis in phase can be analyzed. There results a simple wavefront analysis without the use of precision and moving optical parts which provides for measurement of the wavefront.

    摘要翻译： 诸如来自激光器的波前被采样，优选地在分束器处被分离，以仅分解总光能的一部分。 采样光束通过常规望远镜的扩展或收缩进行调整和调整，然后通过成对的交叉Ronchi光栅发送到位于距离交叉Ronchi光栅的建设性干扰的第一波距离的CCD相机上。 交叉的Ronchi光栅 - 每英寸200行的数量级，优选地每英寸200个等间距的间距，在CCD照相机的焦点上投射一个方形点阵列。 CCD摄像机上的方形阵列阵列的图像通过帧采集器进行冻结，并以常规格式数字化。 通过公开的计算机程序播放数字化图像以定位斑点。 此后，将定位的点与标准点进行比较。 通过了解标准点的位置与可疑点的斑点位置之间的差异，可以分析相位波前分析。 这样就可以实现简单的波前分析，而无需使用精确度和移动的光学部件来提供波前测量。

    Microwave camera
    9.
    发明授权
    Microwave camera 失效
    微波相机

    公开(公告)号：US5121124A

    公开(公告)日：1992-06-09

    申请号：US694098

    申请日：1991-05-01

    申请人： Brett A. Spivey ,  Paul A. Johnson ,  Alex Shek ,  Chester Phillips

    发明人： Brett A. Spivey ,  Paul A. Johnson ,  Alex Shek ,  Chester Phillips

    IPC分类号： G01P3/36 ,  G01P5/00 ,  G01R29/08 ,  G01S3/02 ,  G01S7/486 ,  G01S17/58 ,  G01S17/95 ,  G02F1/09 ,  H01Q19/17

    CPC分类号： H01Q19/175 ,  G01R29/0892 ,  G01S17/58 ,  G01S17/95 ,  G01S7/486 ,  G02F1/09

    摘要： A camera system in which microwave radiation from objects in a field-of-view is collected by an antenna having a beam direction which is a function of the beam frequency. The collected radiation is analyzed to produce an image of the objects in the field-of-view. In a simple embodiment of the invention a one dimensional image is produced. This one dimensional image can be converted to a two dimensional image by rotating the camera system or mounting the camera on a moving platform. In a preferred embodiment of the present invention the microwave radiation collected by the antenna is converted into electronic acoustic signals which sets up a diffraction pattern in a Bragg cell to diffract a laser beam which is focused on a television camera to produce one dimensional image of the field-of-view. The antenna can be scanned to produce a two dimensional image. In another preferred embodiment an array of antennas and a multi-channel Bragg cell is used to produce a two dimensional real time image. The camera is capable of imaging objects through media such as wooden walls which are transparent to microwaves but are opaque to visible light.

    摘要翻译： 一种相机系统，其中通过具有作为光束频率的函数的波束方向的天线来收集来自视场中的物体的微波辐射。 分析所收集的辐射以产生在视场中的对象的图像。 在本发明的简单实施例中，产生了一维图像。 通过旋转相机系统或将相机安装在移动的平台上，可以将该一维图像转换为二维图像。 在本发明的优选实施例中，由天线收集的微波辐射被转换成电声信号，其在布拉格单元中建立衍射图案以衍射聚焦在电视摄像机上的激光束，以产生一维图像 视野。 可以扫描天线以产生二维图像。 在另一个优选实施例中，使用天线阵列和多通道布拉格单元来产生二维实时图像。 该相机能够通过诸如对微波透明但对可见光不透明的木质墙壁等介质成像物体。

    Array compensating beamformer
    10.
    发明授权
    Array compensating beamformer 失效
    阵列补偿波束形成器

    公开(公告)号：US4980870A

    公开(公告)日：1990-12-25

    申请号：US204753

    申请日：1988-06-10

    申请人： Brett A. Spivey ,  Edward G. Newman ,  Paul A. Johnson

    发明人： Brett A. Spivey ,  Edward G. Newman ,  Paul A. Johnson

    IPC分类号： G01S3/48

    CPC分类号： G01S3/48

    摘要： A compensating beamformer which requires orders of magnitude fewer calculations that prior art methods. A compensating beamformer is provided which comprises a plurality of sensing elements and a plurality of analog-to-digital converters, for converting incoming analog signals to digital form. Digital signals from at least four such elements are used to compute phase angle information which is combined to form a matrix of input data in the frequency domain. An unweighted steering vector is determined to sample data from the target direction. A corrector matrix is calculated based on input data from sensing elements. That corrector matrix along with its inverse, which is determined recursively, is used in combination with the unweighted steering vector to determine an optimal steering vector. The input data in the frequency domain are then multiplied by the optimal steering vector to obtain signals in the directions of interest. In preferred embodiments of this invention these calculations are repeated systolically to provide optimal steering vector updates on an essentially real-time basis.

    摘要翻译： 一种补偿波束形成器，其需要几个数量级的现有技术方法的计算。 提供了一种补偿波束形成器，其包括多个感测元件和多个模数转换器，用于将输入的模拟信号转换为数字形式。 使用来自至少四个这样的元件的数字信号来计算相位角信息，该相位角信息被组合以形成频域中的输入数据的矩阵。 确定未加权的导向矢量以从目标方向采样数据。 基于来自感测元件的输入数据计算校正矩阵。 与递归确定的校正矩阵一起使用，与未加权的导向矢量组合使用，以确定最佳导向矢量。 然后将频域中的输入数据乘以最佳导向矢量，以获得感兴趣方向的信号。 在本发明的优选实施例中，这些计算被重复地进行重构，以在基本上实时的基础上提供最佳的导向向量更新。