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    Polarization recovery in a directional display device
    15.
    发明授权
    Polarization recovery in a directional display device 有权

    公开(公告)号：US09235057B2

    公开(公告)日：2016-01-12

    申请号：US13837466

    申请日：2013-03-15

    Applicant: REALD INC.

    Inventor： Michael G. Robinson ,  Gary D. Sharp ,  Graham J. Woodgate ,  Jonathan Harrold ,  Miller H. Schuck

    IPC: G02B27/26 ,  G02B5/30 ,  G02B27/28 ,  G02B27/22 ,  F21V13/12 ,  F21V8/00

    CPC classification number: G02B6/0048 ,  F21V13/12 ,  G02B6/0056 ,  G02B27/225 ,  G02B27/2264

    Abstract: Disclosed is an imaging directional backlight polarization recovery apparatus including an imaging directional backlight with at least a polarization sensitive reflection component with optional polarization transformation and redirection elements. Viewing windows may be formed through imaging individual light sources and hence defines the relative positions of system elements and ray paths. The base imaging directional backlight systems provide substantially unpolarized light primarily for the illumination of liquid crystal displays (LCDs) resulting in at least 50% loss in light output when using a conventional sheet polarizer as input to the display. The invention herein introduces a polarization sensitive reflecting element to separate desired and undesired polarization states for the purposes of transformation and redirection of the reflected light for usable illumination. Polarization transformation and redirection can be provided by additional components such as retarder films and specular mirror surfaces.

    Directional privacy display
    16.
    发明申请
    Directional privacy display 审中-公开
    定向隐私显示

    公开(公告)号：US20150378085A1

    公开(公告)日：2015-12-31

    申请号：US14751878

    申请日：2015-06-26

    Applicant: RealD Inc.

    Inventor： Michael G. Robinson ,  Graham J. Woodgate ,  Jonathan Harrold

    IPC: F21V8/00 ,  G02B27/22

    CPC classification number: G02B6/0048 ,  G02B6/0055 ,  G02B6/0068 ,  G02B27/225 ,  G02F1/1323 ,  H04N13/32 ,  H04N2013/405

    Abstract: A directional privacy display may include a waveguide; and an array of light sources and spatial light modulator that operate in a time sequential manner. The waveguide may include light extraction features arranged to direct light from an array of light sources by total internal reflection to an array of viewing windows and a reflector arranged to direct light from the waveguide by transmission through extraction features of the waveguide to the same array of viewing windows. First and second phases may be temporally multiplexed with respective primary and secondary images and primary and secondary angular illumination distributions. An efficient and bright privacy display may be provided with obscured primary image visibility for off-axis observers.

    Abstract translation: 定向隐私显示可以包括波导; 以及以时间顺序方式操作的光源阵列和空间光调制器。 波导可以包括光提取特征，其布置成将来自光源阵列的光通过全内反射引导到观察窗阵列，以及反射器，布置成通过将波导的提取特征透射通过波导的提取特征来引导来自波导的光， 查看窗口。 第一和第二阶段可以与相应的主要和次要图像以及初级和次级角度照明分布在时间上多路复用。 可以为离轴观察者提供模糊的主要图像可视性的高效和明亮的隐私显示。

    Energy efficient directional flat illuminators
    17.
    发明申请
    Energy efficient directional flat illuminators 有权
    节能型定向平面照明器

    公开(公告)号：US20140333738A1

    公开(公告)日：2014-11-13

    申请号：US14339271

    申请日：2014-07-23

    Applicant: RealD Inc.

    Inventor： Michael G. Robinson ,  Graham J. Woodgate ,  Jonathan Harrold

    IPC: G02B27/22 ,  G02B27/00 ,  H04N13/04 ,  F21V8/00

    CPC classification number: G02B27/225 ,  G02B6/001 ,  G02B6/0033 ,  G02B6/0038 ,  G02B6/004 ,  G02B6/0045 ,  G02B6/0046 ,  G02B6/0048 ,  G02B6/005 ,  G02B6/0051 ,  G02B6/0055 ,  G02B6/0068 ,  G02B6/0073 ,  G02B27/0093 ,  G02B27/2242 ,  H04N13/312 ,  H04N13/368 ,  H04N13/398

    Abstract: Disclosed is an optical valve or light valve for providing large area collimated illumination from localized light sources, and system and method thereof for 2D, 3D, and/or autostereoscopic displays. An optical valve may include a stepped structure, in which the steps include separated extraction features which may be optically hidden to light propagating in a first direction. Light propagating in a second direction may be refracted, diffracted, or reflected by the features to provide illumination beams exiting from the top surface of the optical valve. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays as well as improved 2D display functionality.

    Abstract translation: 公开了一种用于从局部光源提供大面积准直照明的光阀或光阀，以及用于2D，3D和/或自动立体显示器的系统及其方法。 光阀可以包括阶梯式结构，其中步骤包括分离的提取特征，其可以对沿第一方向传播的光进行光学隐藏。 沿第二方向传播的光可以由特征折射，衍射或反射，以提供从光阀的顶表面离开的照明光束。 这种受控照明可以提供有效的多用户自动立体显示器以及改进的2D显示功能。

    Superlens component for directional display
    18.
    发明申请
    Superlens component for directional display 有权
    超薄元件用于定向显示

    公开(公告)号：US20140177032A1

    公开(公告)日：2014-06-26

    申请号：US14137569

    申请日：2013-12-20

    Applicant: RealD Inc.

    Inventor： Graham J. Woodgate ,  Jonathan Harrold ,  Michael G. Robinson

    IPC: G02B27/22 ,  F21V8/00

    CPC classification number: G02B27/2214 ,  G02B6/002 ,  G02B6/0038 ,  G02B6/0048 ,  G02B6/0053 ,  G02B6/0068 ,  H04N13/305 ,  H04N13/32 ,  H04N13/356 ,  H04N13/366 ,  H04N13/398 ,  H04N2013/403

    Abstract: Disclosed is an imaging directional backlight apparatus comprising a waveguide, a light source array, and a further optical element for providing large area directed illumination from localized light sources. The imaging directional backlight may comprise a stepped waveguide that may include a stepped structure, in which the steps may further include extraction features optically hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Viewing windows are formed through imaging individual light sources. The further optical element may comprise a superlens comprising first and second aligned lens arrays that may be arranged to modify the output viewing windows to achieve enhanced window imaging from the directional backlight.

    Abstract translation: 公开了一种成像定向背光装置，其包括波导，光源阵列和用于从局部光源提供大面积定向照明的另外的光学元件。 成像定向背光可以包括可以包括阶梯式结构的阶梯式波导，其中步骤还可以包括在导向光中隐藏的提取特征，在第一向前方向上传播。 在第二反向传播的返回光可以由特征折射，衍射或反射，以提供从波导的顶表面离开的离散照明光束。 通过成像各个光源形成观察窗。 另外的光学元件可以包括包括第一和第二对准的透镜阵列的超滤镜，其可被布置成修改输出观察窗口，以实现来自定向背光源的增强的窗口成像。

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