公开(公告)号：US08072681B2

公开(公告)日：2011-12-06

申请号：US12538642

申请日：2009-08-10

Applicant: David A. Coleman ,  Gary D. Sharp

Inventor： David A. Coleman ,  Gary D. Sharp

IPC: G03B21/60

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

Abstract: 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.

Abstract translation: 极化保护前投影屏幕和扩散器为立体3D观看提供了最佳的极化保存，以及改进的光控制，以提高2D和3D系统的亮度，均匀性和对比度。 通常，所公开的屏幕将光从投影仪引导到扩散轨迹内的观看者，同时保持最佳增益特性。 更具体地说，从预定投影方向入射到前投影屏幕的区域的光在进行基本上单次反射之后被工程化表面反射到预定的扩散轨迹。 包括生成内核的工程表面用于将照明光最优化地扩散到扩散轨迹内的视角范围内，并具有适当的增益分布，同时最佳地保持3D应用的极化。 当与匹配的偏振分析眼镜组合时，这样的屏幕提供了来自任何观察点的极低的串扰。

公开(公告)号：US07982954B2

公开(公告)日：2011-07-19

申请号：US11779704

申请日：2007-07-18

Applicant: Miller H. Schuck ,  Michael G. Robinson

Inventor： Miller H. Schuck ,  Michael G. Robinson

IPC: G02B5/30 ,  G02B6/00 ,  G02B27/28

CPC classification number: G02B6/0096 ,  G02B27/0994 ,  G02B27/283 ,  G03B21/2013 ,  G03B21/208 ,  H04N9/3152 ,  H04N9/3158 ,  H04N9/3167

Abstract: Disclosed herein are light collectors for use in projection applications. The light collectors gather light from surface emitting sources (e.g., LEDs) of differing color (or same color in some embodiments) using input lightpipes. A light collection system splits the light into orthogonal linear polarization states and efficiently propagates the light by use of a polarizing beamsplitter (PBS) and a reflecting element. Further, the light collection system may efficiently homogenize the light using an output lightpipe in a lightpath from the output of the PBS and the reflecting element. In addition, the light collection system may present a single, linear polarization at the output through the use of a half-wave switch (LC cell) in some embodiments or ColorSelect filter in other embodiments. The light collection system may be integrated into a single, monolithic glass, plastic or combination glass/plastic assembly.

Abstract translation: 本文公开了用于投影应用的光收集器。 光收集器使用输入光管从不同颜色（或在一些实施例中的相同颜色）的表面发射源（例如，LED）聚集光。 光收集系统将光分成正交的线性偏振状态，并通过使用偏振分束器（PBS）和反射元件有效地传播光。 此外，光收集系统可以使用来自PBS和反射元件的输出的光路中的输出光管来有效均匀化光。 此外，在其它实施例中，光收集系统可以在一些实施例中使用半波开关（LC单元）或ColorSelect滤光片在输出端呈现单一的线性极化。 光收集系统可以集成到单个，单片玻璃，塑料或玻璃/塑料组合中。

公开(公告)号：US07898603B2

公开(公告)日：2011-03-01

申请号：US11948832

申请日：2007-11-30

Applicant: Gary D. Sharp

Inventor： Gary D. Sharp

IPC: G02F1/1335 ,  G02B27/22

CPC classification number: G02F1/1395 ,  G02B27/28 ,  G02F1/13363

Abstract: Exemplary embodiments of systems for high-performance compensated shutter lens designs, may include compensators for compensating for performance problems that stem from real-world performance limitations in present shutter-glass designs. In an embodiment, a shutterglass lens may include first and second pi-cells and first and second compensators. The pi-cells and the compensators of the shutterglass lens may be stacked together within the shutterglass lens.

Abstract translation: 用于高性能补偿快门透镜设计的系统的示例性实施例可以包括补偿器，用于补偿来自本实施例快门玻璃设计中的现实性能限制的性能问题。 在一个实施例中，快门玻璃透镜可以包括第一和第二pi单元以及第一和第二补偿器。 快门玻璃透镜的pi单元和补偿器可以在快门玻璃透镜内堆叠在一起。

公开(公告)号：US20110013828A1

公开(公告)日：2011-01-20

申请号：US12888843

申请日：2010-09-23

Applicant: Lenny Lipton ,  Mark H. Feldman

Inventor： Lenny Lipton ,  Mark H. Feldman

IPC: G06K9/00

CPC classification number: H04N13/139 ,  G06T3/00 ,  G06T5/001 ,  G06T19/20 ,  G09G5/005 ,  H04N5/202 ,  H04N13/161 ,  H04N13/261 ,  H04N2213/007

Abstract: A device and method for converting one stereoscopic format into another. A software-enabled matrix is used to set forth predefined relationships between one type of format as an input image and another type of format as an output image. The matrix can then be used as a look-up table that defines a correspondence between input pixels and output pixels for the desired format conversion.

Abstract translation: 一种用于将一种立体格式转换成另一立体格式的装置和方法。 使用支持软件的矩阵来设置作为输入图像的一种格式之间的预定义关系和作为输出图像的另一种类型的格式。 然后可以将该矩阵用作查找表，其定义输入像素与期望格式转换的输出像素之间的对应关系。

公开(公告)号：US20100296059A1

公开(公告)日：2010-11-25

申请号：US12785351

申请日：2010-05-21

Applicant: Gary D. Sharp

Inventor： Gary D. Sharp

IPC: G03B21/14 ,  G02F1/03

CPC classification number: G03B35/26 ,  G02B26/00 ,  G02B27/26 ,  G02B27/286 ,  H04N13/341 ,  H04N13/363

Abstract: A polarization switch provides substantially ideal binary polarization switching over a broad range of wavelengths using a polarization modulation wheel having at least one retarder stack that transforms polarization. Using the polarization modulation wheel in a polarization system provides a high throughput polarization switch and operates over a wide range of incidence angles while providing substantially continuous and smooth polarization output for each component for any selected polarization basis set. The polarization modulation wheel is well-suited for stereoscopic polarized projection applications.

Abstract translation: 偏振开关使用具有变换偏振的至少一个延迟器叠层的偏振调制轮，在宽范围的波长范围内提供基本上理想的二极管偏振切换。 在极化系统中使用偏振调制轮提供了高吞吐量偏振开关，并且在宽的入射角范围内工作，同时为任何选定的偏振基准集合的每个分量提供基本连续和平滑的偏振输出。 偏振调制轮非常适合于立体偏振投影应用。

公开(公告)号：US20230302750A1

公开(公告)日：2023-09-28

申请号：US17993778

申请日：2022-11-23

Applicant: RealD Inc.

Inventor： CHING-CHIN (JOHN) WU ,  WEN-SHAO (VINCENT) CHEN

IPC: B29C73/10 ,  E06B9/52

CPC classification number: B29C73/10 ,  E06B9/52 ,  E06B2009/525 ,  C09J9/00

Abstract: A screen repair patch and a screen flaw repair method. The screen repair patch includes an optical layer, a substrate layer, and an adhesion layer. The optical layer and a screen to be repaired have the same or similar optical performance. The substrate layer has a thickness of 10 to 250 microns. The adhesion layer has a thickness of 5 to 200 microns. In the screen flaw repair method, a repair patch is cut off from a region on a patch sheet corresponding to the position of a flaw of a screen, and the repair patch is attached to the corresponding position of the flaw of the screen by using a joining direction of the screen as an affixing direction of the repair patch. The screen repair patch and the screen flaw repair method of the present disclosure uses a patch that can be easily affixed and removed and can repair a flaw on site to maintain original optical efficiency and uniformity of a screen and are applied to a polarization-preserving screen to maintain high polarization contrast, so as to extend the service life of the screen.

公开(公告)号：US11543670B2

公开(公告)日：2023-01-03

申请号：US17379657

申请日：2021-07-19

Applicant: RealD Inc.

Inventor： Jay Ahling ,  Matthew Zimmer

IPC: G02B27/28 ,  G03B21/14 ,  G02B27/01

Abstract: A polarizing beam splitter assembly for directing image light on an input path into multiple exit light paths comprises multiple prisms with edges that meet to form a seam. The polarizing beam splitter assembly includes a diffracting element prior to the seam in the input light path. The diffracting element comprises a geometry that performs at least one of blocking a portion of the image light and scattering a portion of the image light.

公开(公告)号：US20210088806A1

公开(公告)日：2021-03-25

申请号：US17117053

申请日：2020-12-09

Applicant: RealD Inc.

Inventor： Chul Woo Lee ,  Sung Ho Cho ,  Byung Gul Lim

IPC: G02B30/25 ,  G02B27/28 ,  G03B35/26 ,  G02B30/24 ,  G02B5/30

Abstract: A stereoscopic image apparatus that is capable of minimizing loss of optical energy and improving quality of a stereoscopic image is disclosed. The stereoscopic image apparatus includes a polarizing beam splitter to reflect or transmit incident light based on polarization components of the light to split the light in at least three different directions, a reflective member to reflect the light reflected by the polarizing beam splitter to a screen, at least one modulator to modulate the light reflected by the reflective member and the light transmitted through the polarizing beam splitter, and a refractive member disposed in an advancing direction of light to be incident upon the polarizing beam splitter to refract the light to be incident upon the polarizing beam splitter.

公开(公告)号：US10254637B2

公开(公告)日：2019-04-09

申请号：US15664190

申请日：2017-07-31

Applicant: RealD Inc.

Inventor： Harrison Fast ,  David A. Coleman ,  Mark DiLullo

IPC: G03B21/58 ,  G03B21/56 ,  A47B97/02 ,  F16B47/00 ,  F16M13/02

Abstract: A method of mounting screen material may include a screen mounted to a frame at multiple mounting points. One embodiment may include mounting patches attached along the perimeter of the screen. These mounting patches may be strain relieved in order to enable rolling the screen without sacrificing the in-plane rigidity of the patches when the screen is mounted to a frame. Stated differently, the strain relieved patches may reduce the strain on the screen in the circumstance the screen is rolled onto a core. The mounting patches may be strain relieved by locating notches or slits in the mounting patch.

公开(公告)号：US10203511B2

公开(公告)日：2019-02-12

申请号：US15655693

申请日：2017-07-20

Applicant: RealD Inc.

Inventor： Miller H. Schuck ,  Michael G. Robinson ,  Gary D. Sharp

IPC: G02B27/26 ,  G02B27/22 ,  H04N9/31 ,  H04N13/337 ,  H04N13/341 ,  G02B26/00 ,  G02B13/00

Abstract: A polarization conversion system separates light from an unpolarized image source into a first state of polarization (SOP) and an orthogonal second SOP, and directs the polarized light on first and second light paths. The SOP of light on only one of the light paths is transformed to an orthogonal state such that both light paths have the same SOP. A polarization modulator temporally modulates the light on the first and second light paths to first and second output states of polarization. First and second projection lenses direct light on the first and second light paths toward a projection screen to from substantially overlapping polarization encoded images. The polarization modulator may be located before or after the projection lenses. The polarization-encoded images may be viewed using eyewear with appropriate polarization filters.