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    DIRECTIONAL POLARIZATION PRESERVING SCREEN
    1.
    发明公开
    DIRECTIONAL POLARIZATION PRESERVING SCREEN 审中-公开
    DIREKTIONALER POLARISATIONSHALTENDER BILDSCHIRM

    公开(公告)号：EP3014356A1

    公开(公告)日：2016-05-04

    申请号：EP14818642.2

    申请日：2014-06-30

    申请人： RealD Inc. ,  Coleman, David A. ,  Sharp, Gary D.

    发明人： COLEMAN, David A. ,  SHARP, Gary D.

    IPC分类号： G03B21/56 ,  H04N5/74

    CPC分类号： G03B21/60 ,  G03B21/604

    摘要： 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.

    摘要翻译： 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，同时基本上消除小于照明波长的特征，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曲线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。

    THREE DIMENSIONAL STEREOSCOPIC PROJECTION ARCHITECTURES
    5.
    发明授权
    THREE DIMENSIONAL STEREOSCOPIC PROJECTION ARCHITECTURES 有权
    建筑三维立体投影

    公开(公告)号：EP1904892B1

    公开(公告)日：2010-12-22

    申请号：EP06760744.0

    申请日：2006-06-12

    申请人： RealD Inc.

    发明人： ROBINSON, Michael, G ,  CHEN, Jianmin ,  SHARP, Gary D. ,  KORAH, John

    IPC分类号： G03B21/00 ,  H04N9/00

    CPC分类号： G03B35/26 ,  G02B27/26 ,  H04N13/363

    摘要： Described are illumination systems for providing visible images. The systems include a first image projection sub-system operable to provide a first stereo-image output formed by light having a first polarization; a second image projection sub-system operable to provide a second stereo-image output formed by light having a second polarization; a projection means wherein the projection means projects the first and second stereo-image outputs onto a display through a common lens; wherein the system is operable to provide orthogonal first polarization and second polarization. Typically, the first and second image outputs are formed from light having orthogonal polarizations and the system is preferably switchable between providing orthogonal and non-orthogonal first and second images. In preferred embodiments the system is operable to provide nonstereo images while providing increased resolution. Preferred systems include a common light source and a common projection lens. Some systems include digital micromirror devices and liquid crystal on silicon technologies. Related methods of providing visible images are also disclosed.

    POLARIZATION PRESERVING FRONT PROJECTION SCREEN
    6.
    发明公开
    POLARIZATION PRESERVING FRONT PROJECTION SCREEN 审中-公开

    公开(公告)号：EP3267251A1

    公开(公告)日：2018-01-10

    申请号：EP17173037.7

    申请日：2009-01-28

    申请人： RealD Inc.

    发明人： COLEMAN, David A. ,  SHARP, Gary D.

    IPC分类号： G03B21/60 ,  G03B35/16 ,  G03B35/26 ,  G02B27/26

    CPC分类号： G03B21/60 ,  F16H21/14 ,  G02B27/26 ,  G03B35/16 ,  G03B35/26 ,  Y10T74/18232 ,  Y10T428/24802

    摘要： Polarization preserving front projection screens and diffusers provide optimum polarization preservation for stereoscopic 3D viewing, as well as improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed screens direct light from a projector toward viewers within a diffusion locus, while maintaining optimum gain characteristics. More specifically, light incident on a region of the front projection screen from a predetermined projection direction is reflected by an engineered surface to a predetermined diffusion locus after undergoing substantially single reflections. The engineered surface, comprised of generating kernels, is used to optimally diffuse illumination light into a range of viewing angles, within the diffusion locus, with suitable gain profile, while optimally preserving polarization for 3D applications. Such a screen, when combined with matched polarization analyzing eyewear, provides extremely low cross-talk from any observation point.

    POLARIZATION CONVERSION SYSTEMS FOR STEREOSCOPIC PROJECTION
    7.
    发明授权
    POLARIZATION CONVERSION SYSTEMS FOR STEREOSCOPIC PROJECTION 有权
    偏振变换系统立体投影

    公开(公告)号：EP2067066B1

    公开(公告)日：2014-11-05

    申请号：EP07843526.0

    申请日：2007-09-28

    申请人： RealD Inc.

    发明人： SCHUCK, Miller H. ,  ROBINSON, Michael G. ,  SHARP, Gary D.

    IPC分类号： G02B27/26 ,  H04N13/00

    CPC分类号： G03B35/26 ,  G02B27/2264 ,  G02B27/26 ,  G02B27/283 ,  G03B21/142 ,  G03B21/28 ,  G03B35/22 ,  H04N13/341

    摘要： A polarization conversions system (PCS) is located in the output light path of a projector. The PCS may include a polarizing beam splitter, a polarization rotating element, a reflecting element, and a polarization switch. Typically, a projector outputs randomly-polarized light. This light is input to the PCS, in which the PCS separates p-polarized light and s-polarized light at the polarizing beam splitter. P-polarized light is directed toward the polarization switch on a first path. The s-polarized light is passed on a second path through the polarization rotating element (e.g., a half-wave plate), thereby transforming it to p-polarized light. A reflecting element directs the transformed polarized light (now p-polarized) along the second path toward the polarization switch. The first and second light paths are ultimately directed toward a projection screen to collectively form a brighter screen image in cinematic applications utilizing polarized light for three-dimensional viewing.

    HIGH ELASTIC MODULUS PROJECTION SCREEN SUBSTRATES
    9.
    发明公开
    HIGH ELASTIC MODULUS PROJECTION SCREEN SUBSTRATES 审中-公开
    PROJEKTIONSSCHIRMSUBSTRATE MIT HOHEMELASTIZITÄTSMODUL

    公开(公告)号：EP2893396A1

    公开(公告)日：2015-07-15

    申请号：EP13834554.1

    申请日：2013-09-06

    申请人： RealD Inc.

    发明人： SHARP, Gary D. ,  CURTIS, Kevin R. ,  COLEMAN, David A.

    IPC分类号： G03B21/56

    CPC分类号： G03B21/562 ,  G02B27/48 ,  G03B21/56 ,  G03B21/60 ,  G03B21/606

    摘要： 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.

    摘要翻译： 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。