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    Crosstalk suppression in a directional backlight
    32.
    发明申请
    Crosstalk suppression in a directional backlight 有权
    定向背光中的串扰抑制

    公开(公告)号：US20130307946A1

    公开(公告)日：2013-11-21

    申请号：US13836443

    申请日：2013-03-15

    Applicant: REALD INC.

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

    IPC: H04N13/04 ,  F21V8/00

    CPC classification number: H04N13/315 ,  G02B6/0048 ,  G02B6/0051 ,  G02B6/0055 ,  G02B6/0068 ,  G02B27/22 ,  H04N13/32

    Abstract: Disclosed is a light guiding valve apparatus including a light valve, a two dimensional light emitting element array and an input side arranged to reduce light reflection for providing large area directional illumination from localized light emitting elements with low cross talk. A waveguide includes a stepped structure, in which the steps may include extraction features hidden to guided light propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Stray light falling onto a light input side of the waveguide is at least partially absorbed.

    Abstract translation: 公开了一种导光阀装置，其包括光阀，二维发光元件阵列和输入侧，其布置成减少光反射，以从具有低串扰的局部发光元件提供大面积定向照明。 波导包括阶梯结构，其中步骤可以包括对在第一向前方向上传播的引导光隐藏的提取特征。 在第二反向传播的返回光可以由特征折射或反射，以提供离开波导的顶表面离散的照明光束。 落在波导的光输入侧的杂散光至少部分被吸收。

    Wide angle imaging directional backlights
    33.
    发明授权
    Wide angle imaging directional backlights 有权

    公开(公告)号：US10228505B2

    公开(公告)日：2019-03-12

    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

    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.

    Wide angle imaging directional backlights
    35.
    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
    36.
    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
    37.
    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。

    Light input for directional backlight
    40.
    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。

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