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    Reflective light valve
    6.
    发明授权
    Reflective light valve 有权
    反光灯

    公开(公告)号：US06798475B2

    公开(公告)日：2004-09-28

    申请号：US09260869

    申请日：1999-03-02

    申请人： Kenneth C. Ho ,  Minhua Lu ,  Alan E. Rosenbluth ,  Kei-Hsiung Yang

    发明人： Kenneth C. Ho ,  Minhua Lu ,  Alan E. Rosenbluth ,  Kei-Hsiung Yang

    IPC分类号： G02F11335

    CPC分类号： H04N9/3105 ,  G02B27/283 ,  G02F1/134336 ,  G02F1/1396

    摘要： A liquid crystal (LC) lightvalve comprising a twisted nematic LC layer whose molecules are aligned with pixel edges at the mirror backplane, thereby providing improved contrast and efficiency, and reduced visibility of post spacers in black state. The present invention is directed to an LC structure wherein the backplane is rubbed in a direction rectilinear with pixel edges. The LC layer is given the same twist rotation and birefringence as in the conventional TN lightvalve. Polarization control is maintained by illuminating the lightvalve with light whose polarization is rotated by the twist angle relative to the x,y, pixel axes, and by collecting the orthogonally polarized component of the reflected light. The lightvalve top glass is thus rubbed in a direction which is rotated by the twist angle from the horizontal or vertical direction at which the backplane is rubbed.

    摘要翻译： 一种液晶（LC）光阀，其包括扭曲向列LC层，其分子与镜面背板上的像素边缘对准，从而提供改善的对比度和效率，并降低后隔片在黑色状态下的可视性。 本发明涉及一种LC结构，其中背板沿着具有像素边缘的直线方向摩擦。 给出LC层与常规TN光阀相同的扭转旋转和双折射。 通过用偏振相对于x，y，像素轴旋转扭转角的光并通过收集反射光的正交偏振分量来照射光阀来维持极化控制。 因此，光阀顶玻璃沿着背板被摩擦的水平或垂直方向旋转扭转角的方向摩擦。

    Liquid crystal structure with improved black state, and projector using same
    8.
    发明授权
    Liquid crystal structure with improved black state, and projector using same 失效
    具有改善黑色状态的液晶结构，投影机使用相同

    公开(公告)号：US07057686B2

    公开(公告)日：2006-06-06

    申请号：US10897456

    申请日：2004-07-23

    申请人： Kenneth C. Ho ,  Minhua Lu ,  Alan E. Rosenbluth ,  Kei-Hsiung Yang

    发明人： Kenneth C. Ho ,  Minhua Lu ,  Alan E. Rosenbluth ,  Kei-Hsiung Yang

    IPC分类号： G02F1/1335

    CPC分类号： H04N9/3105 ,  G02B27/283 ,  G02F1/134336 ,  G02F1/1396

    摘要： A liquid crystal (LC) lightvalve comprising a twisted nematic LC layer whose molecules are aligned with pixel edges at the mirror backplane, thereby providing improved contrast and efficiency, and reduced visibility of post spacers in black state. The present invention is directed to an LC structure wherein the backplane is rubbed in a direction rectilinear with pixel edges. The LC layer is given the same twist rotation and birefringence as in the conventional TN lightvalve. Polarization control is maintained by illuminating the lightvalve with light whose polarization is rotated by the twist angle relative to the x,y, pixel axes, and by collecting the orthogonally polarized component of the reflected light. The lightvalve top glass is thus rubbed in a direction which is rotated by the twist angle from the horizontal or vertical direction at which the backplane is rubbed.

    摘要翻译： 一种液晶（LC）光阀，其包括扭曲向列LC层，其分子与镜面背板上的像素边缘对准，从而提供改善的对比度和效率，并降低后隔片在黑色状态下的可视性。 本发明涉及一种LC结构，其中背板沿着具有像素边缘的直线方向摩擦。 给出LC层与常规TN光阀相同的扭转旋转和双折射。 通过用偏振相对于x，y，像素轴旋转扭转角的光并通过收集反射光的正交偏振分量来照射光阀来维持极化控制。 因此，光阀顶玻璃沿着背板被摩擦的水平或垂直方向旋转扭转角的方向摩擦。

    Lightvalve projection system in which red, green, and blue image subpixels are projected from two lightvalves and recombined using total reflection prisms
    9.
    发明授权
    Lightvalve projection system in which red, green, and blue image subpixels are projected from two lightvalves and recombined using total reflection prisms 失效
    光阀投影系统，其中红色，绿色和蓝色图像子像素从两个光阀投影并使用全反射棱镜重新组合

    公开(公告)号：US06512502B2

    公开(公告)日：2003-01-28

    申请号：US09085065

    申请日：1998-05-27

    申请人： Kenneth C. Ho ,  Alan Edward Rosenbluth

    发明人： Kenneth C. Ho ,  Alan Edward Rosenbluth

    IPC分类号： G09G334

    CPC分类号： H04N9/312 ,  G09G3/34 ,  G09G2300/0452 ,  H04N9/3105 ,  H04N9/3179

    摘要： A projection display for displaying a color image formed of a plurality of color pixels. Each color pixel has a combination of different color light components. The display has a light source for supplying light to an optical path. A projection lens is disposed in the optical path, as are first and second light valves. The first and second light valves each have a plurality of subpixels. Each subpixel has an associated color filter for reflecting a corresponding color light component. The sub-pixels are grouped into groups of three, each group has a single sub-pixel from one of the first or second light valves and the remaining two sub-pixels from the other light valve, which together combine to form a color pixel of the color image for each of the color pixels of the color image. Lastly, directing means are provided for directing the light from the light source to the first and second light valves and for directing the respective color light components reflected from the light valves towards the projection lens which projects and magnifies the color pixels onto a screen thereby forming the color image.

    摘要翻译： 一种投影显示器，用于显示由多个彩色像素形成的彩色图像。 每个彩色像素具有不同颜色光分量的组合。 显示器具有用于向光路提供光的光源。 投影透镜与第一和第二光阀一样设置在光路中。 第一和第二光阀各具有多个子像素。 每个子像素具有用于反映相应的颜色光分量的相关联的滤色器。 子像素被分成三组，每组具有来自第一或第二光阀之一的单个子像素和来自另一光阀的剩余两个子像素，它们一起组合形成彩色像素 彩色图像的每个彩色像素的彩色图像。 最后，提供引导装置用于将来自光源的光引导到第一和第二光阀，并且将从光阀反射的各个彩色光分量引向投影透镜，投影透镜将彩色像素投影并放大到屏幕上，从而形成 彩色图像。