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    • 3. 发明授权
    • LCLV having photoconductive pedestals each having a cross-sectional area
no greater than 5 percent of the area of its respective reflective pad
    • 具有感光基座的LCLV各自具有不大于其相应反射板的面积的5%的横截面积
    • US5612800A
    • 1997-03-18
    • US333533
    • 1994-11-02
    • Paul O. BraatzChiung-Sheng Wu
    • Paul O. BraatzChiung-Sheng Wu
    • G02B26/08G02F1/1335G02F1/1343G02F1/135H04N5/74
    • G02F1/1354G02F1/133526
    • A liquid crystal light valve is provided with an array of photoconductive pedestals surrounded by a dielectric matrix material. Metal mirror pads are formed on top of each pedestal to form a high resolution metal matrix mirror, with each pedestal/mirror combination servicing one image pixel. The dielectric matrix forms a potential barrier between the individual photoconductive pedestals which prevents lateral charge migration between pedestals. The metal matrix mirror also shields the underlying photoconductive pedestal from photoactivation by the readout beam. The dielectric matrix material has a lower dielectric constant than the photoconductive pedestals, allowing the impedance of the photoconductive pedestals to match the impedance of the liquid crystal layer with a much thinner layer of photoconductive material than in prior LCLVs using a continuous photoconductive layer. The thinner photoconductive layer results in higher electric fields which improve the LCLV's response time, photodegradation rate, spatial resolution and spectral response.
    • 液晶光阀设置有由电介质基质材料包围的感光基座的阵列。 金属镜垫形成在每个基座的顶部,以形成高分辨率金属矩阵镜,每个基座/镜组合服务于一个图像像素。 电介质矩阵在各个感光基座之间形成一个势垒,防止基座之间的横向电荷迁移。 金属矩阵镜还屏蔽下面的光导基座,使其不受光读出光束的影响。 介质矩阵材料的介电常数低于光导基座,使得光电基座的阻抗与使用连续光电导层的现有LCLV相比,液晶层的阻抗与光电导材料的厚度相比更薄。 较薄的光电导层导致更高的电场,这提高了LCLV的响应时间,光降解速率,空间分辨率和光谱响应。
    • 4. 发明授权
    • Liquid crystal display method and apparatus with tuneable phase
compensation
    • 具有可调谐相位补偿的液晶显示方法和装置
    • US5245451A
    • 1993-09-14
    • US766943
    • 1991-09-27
    • Shin-Tson WuChiung-Sheng Wu
    • Shin-Tson WuChiung-Sheng Wu
    • G02F1/1347
    • G02F1/13471
    • A liquid crystal (LC) display method and apparatus applies respective active LC bias voltages to both a master LC cell, and a phase compensation LC cell for the master cell. The bias voltages are selected to reduce the response time of the master cell, and to establish a common multicolor dark state for that cell. With a proper selection of the bias voltages, the products of the liquid crystal thickness and birefringence for each cell are substantially equal and mutually cancel. A bias voltage is first established for one cell, and the bias voltage for the other cell is then scanned to locate the point of mutual cancellation. A range of different bias voltages are possible, and a suitable bias is selected to balance response time against the required operating voltage range. A multicolor display system using only a single light valve can be realized.
    • 液晶(LC)显示方法和装置对主LC单元和主单元的相位补偿LC单元都应用各自的有源LC偏置电压。 选择偏置电压以减少主单元的响应时间,并为该单元建立常见的多色暗状态。 通过适当选择偏置电压,每个单元的液晶厚度和双折射的乘积基本相等并相互抵消。 首先为一个单元建立偏置电压,然后扫描另一个单元的偏置电压以定位相互抵消的点。 一系列不同的偏置电压是可能的,并且选择适当的偏置以平衡响应时间与所需的工作电压范围。 可以实现仅使用单个光阀的多色显示系统。
    • 6. 发明授权
    • System and method for detecting moving objects using video capturing device
    • 使用视频捕获设备检测移动物体的系统和方法
    • US08958598B2
    • 2015-02-17
    • US13631702
    • 2012-09-28
    • Chiung-Sheng Wu
    • Chiung-Sheng Wu
    • G06K9/00
    • G06T7/254G06T2207/20036G06T2207/30196
    • Provided is a system for detecting moving objects. The system includes a video capturing device and a detection unit. The video capturing device captures “n” pieces of consecutive images during a time period, where “n” represents a positive integer. The detecting unit selects one of the images as a reference images and processes the other n−1 pieces of images. The detecting unit differentiates the n−1 pieces of images relative to the reference image, grays the differentiated n−1 pieces of images, binarizes the grayed n−1 pieces of imaged, blurs the binarized n−1 pieces of images, dilates the blurred n−1 pieces of images, and detects edges from the dilated n−1 pieces of images.
    • 提供了一种用于检测移动物体的系统。 该系统包括视频捕获设备和检测单元。 视频拍摄装置在一段时间内捕获“n”个连续图像,其中“n”表示正整数。 检测单元选择一个图像作为参考图像,并处理其它n-1个图像。 检测单元相对于参考图像区分n-1个图像,对差分的n-1个图像进行灰化,对灰度的n-1个成像进行二值化,模糊二进制的n-1个图像,使模糊的 n-1张图像,并且从扩张的n-1张图像中检测边缘。
    • 9. 发明授权
    • Holographic lenses with wide angular and spectral bandwidths for use in
a color display device
    • 具有宽角度和光谱带宽的全息透镜,用​​于彩色显示设备
    • US5680231A
    • 1997-10-21
    • US465848
    • 1995-06-06
    • Jan GrinbergAnson AuChiung-Sheng Wu
    • Jan GrinbergAnson AuChiung-Sheng Wu
    • G02B3/00G02B5/20G03H1/26G02B5/32G02F1/1335
    • G02B3/005G02B3/0062G02B3/0068G02B5/203G03H1/26
    • The angular and/or spectral bandwidth of a holographic lens assembly can be widened to accomodate highly diverging and/or wide spectral bandwidth illumination sources, respectively. Each lens in the lens assembly is comprised of a plurality of angularly customized holograms (an angularly customized hologram set). Each of the individual holograms in an angularly customized hologram set has an acceptance angle range that is centered on a discrete peak acceptance angle. The separation between the holograms' peak acceptance angles is chosen so that the acceptance angle ranges of the individual holograms overlap. The resulting cumulative acceptance angle range of each angularly customized hologram set provides a holographic lens assembly that has a wider angular bandwidth than prior holographic lenses. The spectral bandwidth of the lens assembly can be similarly widened by adding a spectrally customized hologram set to the lens assembly in which the spectral waveband of each of the individual spectrally customized holograms partially overlap. Specific applications to various types of displays are disclosed, as well as preferred fabrication techniques for the holographic lenses.
    • 全息透​​镜组件的角度和/或光谱带宽可以分别加宽以适应高度发散和/或宽的光谱带宽照明源。 透镜组件中的每个透镜由多个角度定制的全息图(角度定制的全息图组)组成。 角度定制的全息组中的每个单独全息图具有以离散的峰值接受角为中心的接受角度范围。 选择全息图峰值接收角之间的间隔,使得各个全息图的接受角度范围重叠。 每个角度定制的全息组的所得到的累积接受角范围提供具有比现有全息透镜更宽的角带宽的全息透镜组件。 透镜组件的光谱带宽可以通过将光谱定制的全息图组添加到其中每个光谱定制全息图中的每个光谱波段部分重叠的透镜组件相似地加宽。 公开了各种类型的显示器的具体应用,以及全息透镜的优选制造技术。