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    Diffractive liquid crystal device
    2.
    发明授权
    Diffractive liquid crystal device 失效
    衍射液晶装置

    公开(公告)号：US6104368A

    公开(公告)日：2000-08-15

    申请号：US52213

    申请日：1998-03-31

    申请人： Paul Bonnett ,  Nicholas Mayhew ,  Michael Geraint Robinson ,  Craig Tombling ,  Michael John Towler

    发明人： Paul Bonnett ,  Nicholas Mayhew ,  Michael Geraint Robinson ,  Craig Tombling ,  Michael John Towler

    IPC分类号： G02F1/137 ,  G02F1/133 ,  G02F1/1343 ,  G02F1/141 ,  G09G3/36

    CPC分类号： G09G3/364 ,  G09G3/3629 ,  G09G2310/06 ,  G09G3/3614

    摘要： A diffractive liquid crystal device includes a bistable liquid crystal arranged as pixels with each pixel being addressed by a strobe electrode and a pair of interdigitated data electrodes. A strobe generator supplies an initial blanking pulse to each of the strobe electrodes and then supplies strobe pulses in sequence to the strobe electrodes for at least several frames without any more blanking pulses. A data signal generator supplies data signals to the pairs of data electrodes which switch each pixel to a diffractive or non-diffractive state irrespective of its previous state. In particular, the strobe signals comprise pulses of opposite direction in consecutive frames. To select the non-diffractive pixel state, switching signals are applied to both the first and second electrodes during each frame. To select the diffractive pixel state, the first and second electrodes receive non-switching and switching pulses, respectively, during odd frames and switching and non-switching pulses, respectively, during even frames. This arrangement may be periodically reversed for DC compensation.

    摘要翻译： 衍射液晶装置包括布置成像素的双稳态液晶，每个像素由选通电极和一对叉指数据电极寻址。 选通发生器向每个选通电极提供初始消隐脉冲，然后将选通脉冲依次提供给选通电极至少几个帧，而不再有消隐脉冲。 数据信号发生器向数据电极对提供数据信号，这些数据电极将每个像素切换成衍射或非衍射状态，而不管其先前状态如何。 特别地，选通信号包括连续帧中相反方向的脉冲。 为了选择非衍射像素状态，在每个帧期间将开关信号施加到第一和第二电极。 为了选择衍射像素状态，第一和第二电极在偶数帧期间分别在奇数帧和切换和非切换脉冲期间分别接收非切换和切换脉冲。 对于直流补偿，这种布置可以周期性地反转。

    Display device and a method of addressing a display device
    7.
    发明授权
    Display device and a method of addressing a display device 失效
    显示装置和寻址显示装置的方法

    公开(公告)号：US06281866B1

    公开(公告)日：2001-08-28

    申请号：US09169641

    申请日：1998-10-09

    申请人： Michael Geraint Robinson ,  Craig Tombling ,  Nicholas Mayhew

    发明人： Michael Geraint Robinson ,  Craig Tombling ,  Nicholas Mayhew

    IPC分类号： G09G336

    CPC分类号： G09G3/364

    摘要： A display device includes a plurality of strobe electrodes and a plurality of pairs of data electrodes crossed with the strobe electrodes to define a respective pixel at each overlap of one of the strobe electrodes with one of the pairs of data electrodes. The display device further includes a strobe signal source for simultaneously supplying X different strobe signals to each group of X strobe electrodes in turn, where X is an integer greater than one, and a data signal source for supplying any one of a plurality of data signals to the data electrodes such that all combinations of optical states of the X pixels addressed by each group of strobe electrodes and each pair of data electrodes are selectable.

    摘要翻译： 显示装置包括多个选通电极和与选通电极交叉的多对数据电极，以在一对选通电极与数据电极对中的一对之间的每个重叠处限定相应的像素。 该显示装置还包括选通信号源，用于依次向每组X个选通电极提供X个不同的选通信号，其中X是大于1的整数，以及用于提供多个数据信号中的任何一个的数据信号源 到数据电极，使得由每组选通电极和每对数据电极寻址的X个像素的光学状态的所有组合是可选择的。

    Eye detection system for providing eye gaze tracking
    8.
    发明授权
    Eye detection system for providing eye gaze tracking 失效
    用于提供眼睛注视跟踪的眼睛检测系统

    公开(公告)号：US5861940A

    公开(公告)日：1999-01-19

    申请号：US902751

    申请日：1997-07-30

    申请人： Michael Geraint Robinson ,  Craig Tombling ,  Nicholas Mayhew ,  Robert George Watling Brown

    发明人： Michael Geraint Robinson ,  Craig Tombling ,  Nicholas Mayhew ,  Robert George Watling Brown

    IPC分类号： G01B11/00 ,  A61B3/113 ,  G01B11/26 ,  G01S17/02 ,  G06F3/033 ,  G06F3/038 ,  A61B3/10

    CPC分类号： A61B3/113 ,  G06K9/00604

    摘要： An eye detection system comprises a source, such as an infrared laser diodes for emitting a divergent beam of infrared radiation. A spatial light modulator is controlled so as to act as a deflector for scanning the beam. A detector detects radiation which is retro-reflected by the eye back along the path of the scanning beam. The deflection angle of the SLM and, for a position sensitive detector, the location of the center of illumination on the detector can be used to determine the angle to the center of the pupil of the eye. By subsequently detecting the angle to the glints corresponding to other sources and, the gaze position of the eye on a screen can be determined.

    摘要翻译： 眼睛检测系统包括源，例如用于发射发散的红外辐射束的红外激光二极管。 控制空间光调制器以便用作用于扫描光束的偏转器。 检测器检测沿着扫描光束的路径由眼睛回射的辐射。 对于位置敏感检测器，SLM的偏转角度可以用于确定与眼睛瞳孔中心的角度。 通过随后检测与其它源相对应的闪光的角度，并且可以确定眼睛在屏幕上的视线位置。

    Diffractive spatial light modulator and display
    9.
    发明授权
    Diffractive spatial light modulator and display 失效
    衍射空间光调制器和显示器

    公开(公告)号：US06373549B1

    公开(公告)日：2002-04-16

    申请号：US09489078

    申请日：2000-01-21

    申请人： Craig Tombling ,  Michael Geraint Robinson ,  Nicholas Mayhew ,  Tomoaki Kuratate

    发明人： Craig Tombling ,  Michael Geraint Robinson ,  Nicholas Mayhew ,  Tomoaki Kuratate

    IPC分类号： G02F11335

    CPC分类号： G02F1/292 ,  G02F1/141 ,  G02F2001/133638 ,  G02F2201/124 ,  G02F2203/02

    摘要： A diffractive spatial light modulator comprises first and second substrates (1, 2) between which an optical path is defined comprising, in order, first (8a,8b), second (5,6), and third (8a,8b) half wave retarders. The second retarder (6,5) has a fixed optic axis (9c) whereas the first and third retarders have switchable optic axes (9a,9b). The fixed optic axis (9c) is oriented outside the switching ranges of the switchable optic axes (9a,9b). The modulator is pixellated and each pixel comprises a switchable phase-only diffraction grating. Each pixel is switchable between a first mode in which incident light is output in the zeroth order diffraction lobe and a second mode in which incident light is deflected into higher order diffraction lobes. The spatial light modulator may be used in high brightness projection displays.

    摘要翻译： 衍射空间光调制器包括第一和第二基板（1,2），在其间定义光路，依次包括第一（8a，8b），第二（5,6）和第三（8a，8b）半波 缓凝剂 第二延迟器（6,5）具有固定的光轴（9c），而第一和第三延迟器具有可切换的光轴（9a，9b）。 固定光轴（9c）定向在可切换光轴（9a，9b）的切换范围之外。 调制器是像素化的，并且每个像素包括可切换的仅相位衍射光栅。 每个像素可在其中入射光在零阶衍射波瓣中输出的第一模式和入射光偏转到更高阶衍射波瓣的第二模式之间切换。 空间光调制器可以用在高亮度投影显示器中。