公开(公告)号：US06473246B1

公开(公告)日：2002-10-29

申请号：US09812055

申请日：2001-03-19

申请人： Yong-Sheng Chao

发明人： Yong-Sheng Chao

IPC分类号： G02B702

CPC分类号： G02B26/0875

摘要： A light beam deflector comprises an initial beam deflector that imparts a small initial deflection, and a beam deflection amplifier that increases the initial small deflection by a multiplication factor. The first of two initial beam deflector embodiments employs highly-electro-optic-sensitive materials and provides methods for reducing and eliminating their photorefractive effects, including the use of a suppressing light source, external electric fields, and temperature control. The second embodiment employs a multi-layer, iterative prism structure, increasing the aperture without increasing the supply voltage. The first of five embodiments of the beam deflection amplifier is a Keplerian telescope lens first stage and a negative lens system second stage. The second is a Galilean telescope lens first stage and a negative lens system second stage. The third is either a Keplerian or Galilean telescope lens alone. The fourth replaces the single second lens of the first stage with a compound lens system. The fifth uses a special sphere lens alone.

摘要翻译： 光束偏转器包括赋予小的初始偏转的初始光束偏转器和通过倍增因子增加初始小偏转的光束偏转放大器。 两个初始光束偏转器实施例中的第一个采用高电光敏感材料，并且提供减少和消除它们的光折射效应的方法，包括使用抑制光源，外部电场和温度控制。 第二实施例采用多层迭代棱镜结构，增加光圈而不增加电源电压。 光束偏转放大器的五个实施例中的第一个是开普勒式望远镜透镜第一阶段和负透镜系统第二阶段。 第二个是伽利略望远镜第一阶段和负透镜系统第二阶段。 第三个是单独的开普勒或伽利略望远镜。 第四代用复合透镜系统代替第一级的单个第二透镜。 第五个单独使用专用球形镜头。

公开(公告)号：US06415069B1

公开(公告)日：2002-07-02

申请号：US09714333

申请日：2000-11-16

申请人： Yong-Sheng Chao ,  Ying Zhao

发明人： Yong-Sheng Chao ,  Ying Zhao

IPC分类号： G02B626

CPC分类号： G02B6/3578 ,  G02B6/3512 ,  G02B6/3526 ,  G02B6/3546

摘要： An optical switching system employing switching modules. Each module comprises (a) a source channel, (b) a transmitting element, (c) a receiving element, and (d) a destination channel. The transmitting element directs the source channel signal to a destination channel. The transmitting element includes an initial beam deflector and a beam deflection amplifier. The receiving element includes a beam deflection compressor and a beam aligner. One embodiment of the initial deflector is a pair of focusing lenses, one of which is displaced by a piezoelectric actuator. When one lens is displaced a distance d, the output light beam has a deflection angle &agr;=(f1+f2)/f2. The beam deflection amplifier multiplies the small angle &agr; by a transfer function F to result in a beam with a deflection angle F&agr;. The receiving element is the transmitting element in reverse. The first system configuration connects a single channel to one of a number of channels. The second system configuration connects a group of M channels with another group of N channels. The third system configuration cross-connects N channels in an arbitrary manner.

摘要翻译： 一种采用交换模块的光交换系统。 每个模块包括（a）源信道，（b）发射元件，（c）接收元件，和（d）目的信道。 发送元件将源信道信号引导到目的信道。 发射元件包括初始光束偏转器和光束偏转放大器。 接收元件包括光束偏转压缩器和光束对准器。 初始偏转器的一个实施例是一对聚焦透镜，其中一个被压电致动器移位。 当一个透镜移动距离d时，输出光束具有偏转角α=（f1 + f2）/ f2。 光束偏转放大器将小角度α乘以传递函数F以产生具有偏转角度Falpha的光束。 接收元件是相反的发送元件。 第一个系统配置将单个通道连接到多个通道之一。 第二个系统配置将一组M个通道与另一组N个通道相连。 第三个系统配置以任意方式交叉连接N个通道。

公开(公告)号：US06292310B1

公开(公告)日：2001-09-18

申请号：US09812767

申请日：2001-03-20

申请人： Yong-Sheng Chao

发明人： Yong-Sheng Chao

IPC分类号： G02B702

CPC分类号： G02B26/0875

摘要： A light beam deflector comprising an initial dynamic beam deflector and a beam deflection amplifier. The initial deflector can be any currently available device for providing a small angle deflection. The beam deflection amplifier has two embodiments: a Keplerian telescope lens first stage and a negative lens system second stage, and a Galilean telescope lens first stage and a negative lens system second stage.

摘要翻译： 一种光束偏转器，包括初始动态光束偏转器和光束偏转放大器。 初始偏转器可以是用于提供小角度偏转的任何当前可用的装置。 光束偏转放大器具有两个实施例：开普勒式望远镜透镜第一级和负透镜系统第二级，以及伽利略望远镜透镜第一级和负透镜系统第二级。

公开(公告)号：US6115168A

公开(公告)日：2000-09-05

申请号：US181761

申请日：1998-10-29

申请人： Ying Zhao ,  Yong-Sheng Chao

发明人： Ying Zhao ,  Yong-Sheng Chao

IPC分类号： G02F1/03

CPC分类号： G02F1/0311

摘要： A retroreflecting modulator including a lens, a light guide, a light modulator, and a reflective surface. Incident light falls on the lens, where it is focused as a spot on a focal surface. The light guide transmits the focused light to the light modulator, where it is modulated and reflected back, via the reflective surface and light guide, to the lens. The lens emits the modulated light in the opposite direction as the incident light. The preferred light-receiving and focusing device is a specialty sphere lens, the preferred light guide is a fiber optic plate, and the preferred light modulator is a liquid crystal modulator. The retroreflecting modulator may be spatially-unresolvable, where a single signal modulates the light, or spatially-resolvable, where the modulation signal depends upon the direction of the incident light.

摘要翻译： 一种回射调制器，包括透镜，光导，光调制器和反射表面。 入射光落在透镜上，在焦点表面聚焦成一个点。 光导通过聚焦光将光调制器透过反射表面和光导被调制和反射回到透镜。 透镜以与入射光相反的方向发射调制光。 优选的光接收和聚焦装置是专用球形透镜，优选的光导是光纤板，并且优选的光调制器是液晶调制器。 回射调制器可以在空间上不可解析，其中单个信号调制光或空间可分辨的调制信号取决于入射光的方向。

公开(公告)号：US6052433A

公开(公告)日：2000-04-18

申请号：US25926

申请日：1998-02-19

申请人： Yong-Sheng Chao

发明人： Yong-Sheng Chao

IPC分类号： A61B6/00 ,  A61B6/03 ,  A61B6/06 ,  G01N23/04 ,  G01T1/164 ,  G03B42/02 ,  G06T1/00 ,  G06T5/20 ,  G06T11/00 ,  G21K1/02 ,  H05G1/60 ,  H05G1/64

CPC分类号： A61B6/482 ,  A61B6/06 ,  A61B6/4035 ,  A61B6/405 ,  A61B6/4241 ,  G01T1/1648 ,  G06T11/006 ,  G21K1/025 ,  H05G1/60 ,  G06T2211/408

摘要： Apparatus and method for performing dual-energy x-ray imaging using two-dimensional detectors. The apparatus consists of, in physical order, an x-ray source, a front two-dimensional x-ray detector, a beam selector, and a rear two-dimensional x-ray detector. The subject is located between the x-ray source and front detector. The beam selector prevents primary x-rays from reaching selected locations of the rear detector. A pair of primary dual-energy images is obtained at the rear detector. Using a dual-energy data decomposition method, a low-resolution primary x-ray front detector image is calculated, from which a high-resolution primary dual-energy image pair is calculated. In addition, the data decomposition method can be used to calculate a pair of high-spatial-resolution material composition images.

摘要翻译： 使用二维检测器进行双能X射线成像的装置和方法。 该装置以物理顺序包括x射线源，前二维X射线检测器，束选择器和后二维X射线检测器。 主体位于X射线源和前端检测器之间。 光束选择器防止主X射线到达后检测器的选定位置。 在后检测器处获得一对主要双能量图像。 使用双能数据分解方法，计算低分辨率初级X射线前检测器图像，从其计算高分辨率主要双能量图像对。 另外，数据分解方法可用于计算一对高空间分辨率的材料合成图像。