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    Liquid crystal display device including a birefringent filter and a diffractive filter for diffusing the resultant image
    142.
    发明授权
    Liquid crystal display device including a birefringent filter and a diffractive filter for diffusing the resultant image 失效
    液晶显示装置包括双折射滤光器和用于扩散所得图像的衍射滤光片

    公开(公告)号：US6075581A

    公开(公告)日：2000-06-13

    申请号：US864411

    申请日：1997-05-28

    Applicant: Yoshiki Shirochi

    Inventor： Yoshiki Shirochi

    IPC: G02B5/20 ,  G02B5/18 ,  G02B5/30 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1347

    CPC classification number: G02F1/133504 ,  G02F1/13363 ,  G02F2001/133638 ,  G02F2201/305

    Abstract: An image display apparatus and a liquid-crystal display device using such an optical filter for diffusing pixels while suppressing the occurrence of moire. A diffuser (optical filter) 13 comprising a combination of a diffraction grating 26 and a birefringence plate 27 is disposed on an LCD 11 in an opposing relation to the viewer side. The diffraction grating 26 diffuses each pixel of the LCD 11 into three points in the vertical direction by a shift amount of POy/3 (POy: same color pixel pitch in the vertical direction). Further, the birefringence plate 27 diffuses each diffused pixel into two points in the horizontal direction by a shift amount of Pox/2 (Pox: same color pixel pitch in the horizontal direction). Thus, the diffuser 13 diffuses each pixel of the LCD 11 into six pixels to thereby optically erase a matrix-like pixel pattern. The diffraction grating 26 diffuses pixels by a large shift amount, whereby a total thickness of birefringence plate can be suppressed from increasing as compared with an optical filter for diffusing pixels by use of only a birefringence plate. Since the diffraction grating 26 diffuses pixels by a large shift amount, a grating pitch can be reduced, and the occurrence of moire can be suppressed.

    Abstract translation: 一种图像显示装置和使用这种滤光器的液晶显示装置，用于漫射像素，同时抑制莫尔+ E，acu e + EE的发生。 包括衍射光栅26和双折射板27的组合的漫射器（滤光器）13以与观察者侧相对的关系设置在LCD 11上。 衍射光栅26将LCD11的每个像素在垂直方向上扩展为POy / 3的偏移量（POy：垂直方向上的相同颜色像素间距）的三个点。 此外，双折射板27将每个扩散像素在水平方向上扩散为两个点，Pox / 2的偏移量（Pox：在水平方向上的相同颜色像素间距）。 因此，扩散器13将LCD 11的每个像素扩散成六个像素，从而光学地擦除矩阵状像素图案。 衍射光栅26以大的偏移量扩散像素，由此与仅使用双折射板的漫射像素的滤光片相比，可以抑制双折射板的总厚度增加。 由于衍射光栅26以大的偏移量扩散像素，所以可以减小光栅间距，并且可以抑制莫尔+ E，acu + EE的发生。

    Electro-optical device wherein orientation layers have grating structure and comprises birefringent material with refractive indices equal to electro-optic medium
    143.
    发明授权
    Electro-optical device wherein orientation layers have grating structure and comprises birefringent material with refractive indices equal to electro-optic medium 失效
    电光装置，其中取向层具有光栅结构并且包括折射率等于电光介质的双折射材料

    公开(公告)号：US6014197A

    公开(公告)日：2000-01-11

    申请号：US732240

    申请日：1996-10-25

    Applicant: Rifat A. M. Hikmet

    Inventor： Rifat A. M. Hikmet

    IPC: G02F1/1337 ,  G02F1/01 ,  G02F1/141 ,  G02F1/29 ,  G02F1/13

    CPC classification number: G02F1/29 ,  G02F1/01 ,  G02F1/141 ,  G02F2201/305

    Abstract: Switchable electro-optic medium (2) between two substrates (3, 4) at least one of which carries a grating structure (7, 8) at the side of the electro-optic medium, which grating structure has refractive indices which are substantially identical to those of the medium in the non-isotropic state. In the isotropic state diffraction occurs at the grating structure due to a difference in refractive index so that the central beam (11) decreases in intensity. Based on this principle, light shutters for, for example projection display but also beam splitters, colour selectors and beam deflectors may be realized.

    Abstract translation: PCT No.PCT / IB96 / 00148 Sec。 371日期1996年10月25日第 102（e）日期1996年10月25日PCT 1996年2月27日PCT公布。 公开号WO96 / 27148 日期1996年9月6日在两个基板（3,4）之间的可切换电光介质（2），其中至少一个在电光介质侧具有光栅结构（7,8），该光栅结构具有折射 指数与非各向同性状态的介质基本相同。 在各向同性状态下，由于折射率差异，光栅结构发生在中心束（11）强度下降。 基于这一原理，可以实现用于例如投影显示器，而且分束器，颜色选择器和光束偏转器的光闸。

    Optical space switch device
    146.
    发明授权
    Optical space switch device 失效
    光学空间开关装置

    公开(公告)号：US5532855A

    公开(公告)日：1996-07-02

    申请号：US411162

    申请日：1995-03-27

    Applicant: Masayuki Kato ,  Hiroyasu Ito

    Inventor： Masayuki Kato ,  Hiroyasu Ito

    IPC: H04Q3/52 ,  H04J14/00

    CPC classification number: H04Q11/0005 ,  G02F1/1313 ,  G02F2001/311 ,  G02F2201/305 ,  G02F2203/07 ,  G02F2203/24 ,  G02F3/00 ,  G03H1/0248 ,  G03H2001/2615 ,  G03H2222/31 ,  H04Q2011/0052

    Abstract: The invention provides an optical space switch device which provides variable interconnection of one- or two-dimensionally spatially multiplexed optical signals. The optical space switch device comprises a plurality of optical space switch stages stacked to form a multi-input multi-output optical space switch. Each of the optical space switch stages comprises a plurality of 2-input 2-output optical switches, each of which comprises a polarization control layer and an optical path shifting layer. The optical path shifting layer has a bypass mode in which it outputs beams of light along optical axes and an exchange mode in which it shifts beams of light by diffraction.

    Abstract translation: 本发明提供一种提供一维或二维空间复用光信号的可变互连的光学空间开关装置。 光学空间开关装置包括堆叠形成多输入多输出光学空间开关的多个光学空间开关台。 每个光学空间开关级包括多个2输入2输出光开关，每个2输出光开关包括偏振控制层和光路移动层。 光路移动层具有旁路模式，其中沿着光轴输出光束，并且通过衍射来移动光束的交换模式。

    Optical space switch employing 2 parallel diffraction gratings and a polarization rotating element
    147.
    发明授权
    Optical space switch employing 2 parallel diffraction gratings and a polarization rotating element 失效
    采用2个平行衍射光栅和偏振旋转元件的光学空间开关

    公开(公告)号：US5430561A

    公开(公告)日：1995-07-04

    申请号：US910779

    申请日：1992-07-08

    Applicant: Masayuki Kato ,  Hiroyasu Ito

    Inventor： Masayuki Kato ,  Hiroyasu Ito

    IPC: H04Q3/52 ,  G02F1/13 ,  G02F1/137

    CPC classification number: H04Q11/0005 ,  G02F1/1313 ,  G02F2001/311 ,  G02F2201/305 ,  G02F2203/07 ,  G02F2203/24 ,  G02F3/00 ,  G03H1/0248 ,  G03H2001/2615 ,  G03H2222/31 ,  H04Q2011/0052

    Abstract: The invention provides an optical space switch device which provides variable interconnection of one- or two-dimensionally spatially multiplexed optical signals. The optical space switch device comprises a plurality of optical space switch stages stacked to form a multi-input multi-output optical space switch. Each of the optical space switch stages comprises a plurality of 2-input 2-output optical switches, each of which comprises a polarization control layer and an optical path shifting layer. The optical path shifting layer has a bypass mode in which it outputs beams of light along optical axes and an exchange mode in which it shifts beams of light by diffraction.

    Abstract translation: 本发明提供一种提供一维或二维空间复用光信号的可变互连的光学空间开关装置。 光学空间开关装置包括堆叠形成多输入多输出光学空间开关的多个光学空间开关台。 每个光学空间开关级包括多个2输入2输出光开关，每个2输出光开关包括偏振控制层和光路移动层。 光路移动层具有旁路模式，其中沿着光轴输出光束，并且通过衍射来移动光束的交换模式。

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