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    Wide angle imaging directional backlights
    61.
    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
    65.
    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
    66.
    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。

    High elastic modulus projection screen substrates
    67.
    发明授权
    High elastic modulus projection screen substrates 有权
    高弹性模量投影屏幕基板

    公开(公告)号：US09046755B2

    公开(公告)日：2015-06-02

    申请号：US14020654

    申请日：2013-09-06

    Applicant: RealD Inc.

    Inventor： Gary D. Sharp ,  Kevin R. Curtis ,  David A. Coleman

    IPC: G03B21/56 ,  G03B21/60 ,  G03B21/606

    CPC classification number: G03B21/562 ,  G02B27/48 ,  G03B21/56 ,  G03B21/60 ,  G03B21/606

    Abstract: A stiffening strip at selected edges of a screen may enable the use and mounting of a high-elastic modulus substrate screen material. Such screen materials may be engineered to provide polarization-preserving characteristics, and be applied to or part of the high-elastic modulus substrate. Furthermore, the stiffening strip may enable the use of screen vibration techniques to reduce speckle in display applications that use projection screens, particularly those display applications using illumination sources prone to speckle such as laser-based projection. The screen vibration may be provided by a vibrating device attached to the stiffening strip.

    Abstract translation: 在屏幕的选定边缘处的加强条可以使得能够使用和安装高弹性模量的基底屏幕材料。 这样的筛网材料可以被设计成提供偏振保持特性，并且被施加到高弹性模量基底的一部分上。 此外，加强条可以使用屏幕振动技术来减少使用投影屏幕的显示器应用中的斑点，特别是那些使用容易发生斑点的照明源（例如基于激光的投影）的显示应用。 屏幕振动可以由附接到加强条的振动装置提供。

    Directional polarization preserving screen
    68.
    发明申请
    Directional polarization preserving screen 审中-公开
    定向极化保护屏

    公开(公告)号：US20150002931A1

    公开(公告)日：2015-01-01

    申请号：US14319300

    申请日：2014-06-30

    Applicant: RealD Inc.

    Inventor： David A. Coleman

    IPC: G03B21/60

    CPC classification number: G03B21/60 ,  G03B21/604

    Abstract: A directional polarization preserving front projection screen may be preferably produced using an engineered surface. Unlike statistical surfaces, engineered surfaces may provide locally specular reflections, with little to no bulk scatter, while substantially eliminating features smaller than a wavelength of illumination and thus true depolarization. Most, if not all, contours contributing to the slope probability density can be engineered to achieve a desired macroscopic gain profile. The screen may diffuse light by using locally specular reflections, in which a bias angle introduced to the gain profile of the screen may be determined by the slope of the ramps, and with resets that may be substantially hidden from projector illumination.

    Abstract translation: 可以优选地使用工程表面来制造定向偏振保留前投影屏幕。 与统计表面不同，工程表面可以提供局部镜面反射，几乎没有或没有散射散射，同时基本上消除了比照明波长小的特征，从而真正去极化。 大多数（如果不是全部）可以设计有助于斜率概率密度的轮廓以实现期望的宏观增益分布。 屏幕可以通过使用局部镜面反射来漫射光，其中引入到屏幕的增益分布的偏​​置角可以由斜面的斜率确定，并且可以基本上隐藏投影仪照明的复位。

    System and method for vibrating screens to reduce speckle
    69.
    发明申请
    System and method for vibrating screens to reduce speckle 有权
    振动筛的系统和方法，减少斑点

    公开(公告)号：US20140362437A1

    公开(公告)日：2014-12-11

    申请号：US14298633

    申请日：2014-06-06

    Applicant: RealD Inc.

    Inventor： Douglas J. McKnight ,  Kevin Curtis

    IPC: G02B27/48 ,  G03B21/56

    CPC classification number: G02B27/48 ,  G03B21/562 ,  G10K11/175

    Abstract: The present disclosure includes systems and methods for solving speckle problems by exciting the screen with a more complex vibration spectrum. A range of frequencies provides, in effect, a collection of overlapping patterns of high and low displacement, so that all regions of the screen have enough motion to reduce visible speckle. As previously discussed acceptable speckle may be approximately 15% contrast or less, preferably approximately 5% contrast or less at approximately 15 feet from the screen.

    Abstract translation: 本公开包括通过以更复杂的振动谱激发屏幕来解决斑点问题的系统和方法。 频率范围实际上提供了高和低位移的重叠图案的集合，使得屏幕的所有区域具有足够的运动以减少可见斑点。 如前所述，可接受的斑点可以在离屏幕大约15英尺处约15％的对比度或更小，优选约5％的对比度或更小。

    Field-of-view compensated polarization switch for short-throw 3D projection
    70.
    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。

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