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    Wide angle imaging directional backlights
    51.
    发明申请
    Wide angle imaging directional backlights 审中-公开

    公开(公告)号：US20170139097A1

    公开(公告)日：2017-05-18

    申请号：US15290543

    申请日：2016-10-11

    Applicant: RealD Inc.

    Inventor： Michael G. Robinson ,  Graham J. Woodgate

    IPC: F21V8/00 ,  G02B27/22 ,  H05B33/08

    CPC classification number: G02B6/002 ,  B29D11/00596 ,  G02B5/09 ,  G02B6/0038 ,  G02B6/0048 ,  G02B6/0055 ,  G02B6/0068 ,  G02B27/0093 ,  G02B27/225 ,  H04N13/305 ,  H04N13/312 ,  H04N13/32 ,  H04N13/349

    Abstract: An imaging directional backlight apparatus includes a waveguide and a light source array for providing large area directed illumination from localized light sources. The waveguide may include a stepped structure. The steps may 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, providing discrete illumination beams exiting from the top surface of the waveguide. Viewing windows are formed through imaging individual light sources and define the relative positions of system elements and ray paths. The uncorrected system creates non-illuminated void portions when viewed off-axis preventing uniform wide angle 2D illumination modes. The input end may have microstructures arranged to remove this non uniformity at wide angles. The microstructures may have reduced reflectivity for parts of the input end that contribute to stray light in privacy and autostereoscopic modes.

    Wide Angle Imaging Directional Backlights
    52.
    发明申请
    Wide Angle Imaging Directional Backlights 审中-公开
    广角成像定向背光

    公开(公告)号：US20160349444A1

    公开(公告)日：2016-12-01

    申请号：US15165960

    申请日：2016-05-26

    Applicant: RealD Inc.

    Inventor： Michael G. Robinson ,  Robert A. Ramsey ,  Graham J. Woodgate

    IPC: F21V8/00

    CPC classification number: G02B6/0055 ,  G02B6/0016 ,  G02B6/0038 ,  G02B6/0048 ,  G02B6/0068 ,  G02B6/0091

    Abstract: An imaging directional backlight apparatus including a waveguide, a light source array, for providing large area directed illumination from localized light sources. The waveguide 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 deflected 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 from the side of the waveguide and hence defines the relative positions of system elements and ray paths. A directional backlight with small footprint and low thickness may be provided.

    Abstract translation: 一种成像方向性背光装置，包括用于从局部光源提供大面积定向照明的波导，光源阵列。 波导可以包括阶梯式结构，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。 在第二偏转方向上传播的返回光可以由特征折射，衍射或反射，以提供离开波导顶表面离散的照明光束。 通过从波导侧面成像各个光源形成观察窗，从而定义系统元件和射线路径的相对位置。 可以提供小尺寸和低厚度的定向背光。

    Wide angle imaging directional backlights
    53.
    发明申请
    Wide angle imaging directional backlights 审中-公开
    广角成像定向背光

    公开(公告)号：US20160299281A1

    公开(公告)日：2016-10-13

    申请号：US15097750

    申请日：2016-04-13

    Applicant: RealD Inc.

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

    IPC: F21V8/00

    CPC classification number: G02B6/0055 ,  B29D11/00269 ,  B29D11/00596 ,  G02B5/09 ,  G02B6/0031 ,  G02B6/0038 ,  G02B6/0043 ,  G02B6/0048 ,  G02B6/0061 ,  G02B6/0065 ,  G02B6/0068 ,  G02B6/009

    Abstract: An imaging directional backlight apparatus including a waveguide, a light source array, for providing large area directed illumination from localized light sources. The waveguide 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 and hence defines the relative positions of system elements and ray paths. Lateral non-uniformities of output image are improved by means of adjustment of input aperture shape and reflective aperture shape. Cross talk in autostereoscopic and privacy displays may further be improved by light blocking layers arranged on the input end of the waveguide.

    Abstract translation: 一种成像方向性背光装置，包括用于从局部光源提供大面积定向照明的波导，光源阵列。 波导可以包括阶梯式结构，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。 观察窗通过成像各个光源形成，因此定义了系统元件和射线路径的相对位置。 通过输入孔径形状和反射孔径形状的调整，提高了输出图像的横向非均匀性。 通过在波导的输入端设置的遮光层可进一步改善自动立体和隐私显示中的交谈。

    Point reposition depth mapping
    57.
    发明申请
    Point reposition depth mapping 审中-公开
    点重新定位深度映射

    公开(公告)号：US20150199843A1

    公开(公告)日：2015-07-16

    申请号：US14575990

    申请日：2014-12-18

    Applicant: RealD Inc.

    Inventor： Michael G. Robinson ,  Charles J. Ozinga

    IPC: G06T15/20 ,  G06T7/00 ,  G06T15/00

    CPC classification number: G06T15/20 ,  G06T7/593 ,  G06T15/005 ,  G06T2207/10028 ,  G06T2207/20228

    Abstract: A method and apparatus for providing optimal correction to depth mapping between captured and displayed stereoscopic content. The solution is derived in a continuous form that can be implemented through CGI scaling techniques compatible with image rendering techniques. Similar correction can be implemented with variable depth-dependent camera separation and disparity re-mapping. The latter is applicable to correcting existing stereoscopic content.

    Abstract translation: 一种用于为捕获和显示的立体内容之间的深度映射提供最佳校正的方法和装置。 该解决方案以连续的形式导出，可以通过与图像渲染技术兼容的CGI缩放技术来实现。 可以使用可变深度依赖的相机分离和视差重新映射来实现类似的校正。 后者适用于校正现有的立体内容。

    Light input for directional backlight
    58.
    发明申请
    Light input for directional backlight 有权
    定向背光的光输入

    公开(公告)号：US20150160404A1

    公开(公告)日：2015-06-11

    申请号：US14513120

    申请日：2014-10-13

    Applicant: RealD Inc.

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

    IPC: F21V8/00 ,  G02B27/22

    CPC classification number: G02B6/0068 ,  G02B6/0048 ,  G02B6/0066 ,  G02B6/0073 ,  G02B27/22

    Abstract: A directional backlight may include a light guiding apparatus including at least one transparent optical waveguide for providing large area collimated illumination from localized light sources. The waveguide is arranged in a first part and a second part with a light injection aperture between the respective parts. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays as well as improved 2D display functionality including high brightness displays and high display efficiency.

    Abstract translation: 方向性背光源可以包括导光装置，其包括用于从局部光源提供大面积准直照明的至少一个透明光波导。 波导布置在第一部分和第二部分之间，在相应部分之间具有光注入孔。 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，包括高亮度显示和高显示效率。

    Field-of-view compensated polarization switch for short-throw 3D projection
    59.
    发明申请
    Field-of-view compensated polarization switch for short-throw 3D projection 有权
    用于短投三维投影的视场补偿偏振开关

    公开(公告)号：US20140232948A1

    公开(公告)日：2014-08-21

    申请号：US14166636

    申请日：2014-01-28

    Applicant: RealD Inc.

    Inventor： Gary D. Sharp ,  Jianmin Chen ,  Michael G. Robinson

    IPC: H04N13/04 ,  G02F1/1335

    CPC classification number: H04N13/337 ,  G02B27/26 ,  G02F1/133528 ,  G02F1/133634 ,  G02F1/13471 ,  G02F1/1395 ,  G02F2001/133531 ,  G02F2413/11 ,  H04N13/363

    Abstract: Generally, this disclosure concerns the angle sensitivity of polarization switch elements and the resulting impact of the ray direction on performance. More specifically, apparatus and techniques for compensating the angular sensitivity of liquid crystal (LC) polarization switches are described that enhance the performance of polarization switches. For example, a polarization switch is disclosed that transforms linearly polarized light of an initial polarization orientation that includes a first and second liquid crystal cell with a compensator located between the LC cells. The compensator layer is operable to enhance the field of view through the polarization switch. Such compensation techniques are particularly useful for short-throw projection environments.

    Abstract translation: 通常，本公开涉及偏振开关元件的角度灵敏度以及由此导致的射线方向对性能的影响。 更具体地，描述了用于补偿液晶（LC）偏振开关的角灵敏度的装置和技术，其提高了偏振开关的性能。 例如，公开了一种偏振开关，其通过位于LC单元之间的补偿器转换包括第一和第二液晶单元的初始偏振取向的线偏振光。 补偿器层可操作以通过偏振开关增强视场。 这种补偿技术对于短投投影环境特别有用。

    Controlling light sources of a directional backlight
    60.
    发明申请
    Controlling light sources of a directional backlight 审中-公开
    控制定向背光的光源

    公开(公告)号：US20140009508A1

    公开(公告)日：2014-01-09

    申请号：US13896870

    申请日：2013-05-17

    Applicant: RealD Inc.

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

    IPC: G09G5/10 ,  F21V8/00

    CPC classification number: G09G5/10 ,  B60K35/00 ,  G02B6/0011 ,  G02B6/003 ,  G02B6/0048 ,  G02B6/0066 ,  G02B6/0068 ,  G02B27/225 ,  H04N13/32 ,  H04N13/356 ,  H04N2013/403 ,  H04N2213/001

    Abstract: Disclosed is an imaging directional backlight including an array of light sources, and a control system arranged to provide variable distribution of luminous fluxes, scaled inversely by the width associated with the respective light sources in the lateral direction, across the array of light sources. The luminous intensity distribution of output optical windows may be controlled to provide desirable luminance distributions in the window plane of an autostereoscopic display, a directional display operating in wide angle 2D mode, privacy mode and low power consumption mode. Image quality may be improved and power consumption reduced.

    Abstract translation: 公开了一种包括光源阵列的成像定向背光，以及控制系统，被布置成提供横跨光源阵列的与横向方向上的各个光源相关联的宽度相反缩放的光束的可变分布。 可以控制输出光学窗口的发光强度分布，以提供在自动立体显示器的窗平面中所需的亮度分布，以广角2D模式操作的定向显示，隐私模式和低功耗模式。 可以提高图像质量并降低功耗。

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