公开(公告)号：US08817371B1

公开(公告)日：2014-08-26

申请号：US12512007

申请日：2009-07-29

申请人： Simon Andrew Boothroyd ,  Jerzy Adam Dobrowolski

发明人： Simon Andrew Boothroyd ,  Jerzy Adam Dobrowolski

IPC分类号： G02B5/30 ,  G02B27/28

CPC分类号： G02B27/283

摘要： A polarizing beam splitter has a pair of opposed transparent prism substrates with a refractive index n0, and providing at least one input port and at least one output port. The input port accepts light incident over a range of operational angles including a central operational angle. A multilayer thin film structure is sandwiched between the pair of opposed transparent substrates and consists essentially of a plurality of layers l1 . . . lm having respective refractive indices n1 . . . nm, wherein at least three of said refractive indices n1 . . . nm are different, and wherein the refractive index of the substrates n0 lies between the highest refractive index nH and lowest refractive index nL, and wherein nH, nL and n0 define a Brewster angle θ0B: θ 0 ⁢ B = arcsin ( n L ⁢ n H n 0 ⁢ n L 2 + n H 2 ) , and a critical angle θc: θ C = arcsin ⁡ ( n L n 0 ) . The refractive indices n0 and n1 . . . nm are selected such that the central operational angle for a beam incident on the multiple thin film structure lies above the Brewster angle θ0B and such that most or all the operational angles defined by said input port lie above the Brewster angle θ0B. For p-polarized light at least one optical admittance of the layers with refractive indices n1 . . . nm is lower or very close to that of the optical admittance of the substrate for the operational angles such that the thin film polarizing beam-splitter favors the transmittance for p-polarized light incident at that input port such that most of the p-polarized light is transmitted through the multiple thin film structure. For s-polarized light the polarizing beam-splitter acts as a high reflective coating to favor the reflectance for s-polarized light incident at the input port such that most of the s-polarized light is reflected from said multiple thin film structure. The polarizing beam splitter is compact and yet remains functional over a wide range of operational angles.

公开(公告)号：US08388138B1

公开(公告)日：2013-03-05

申请号：US12045119

申请日：2008-03-10

申请人： Simon Andrew Boothroyd

发明人： Simon Andrew Boothroyd

IPC分类号： G03B21/00 ,  G03B21/14 ,  G02B27/22 ,  G02B27/26 ,  G02F1/1335 ,  H04N13/04 ,  H04N9/47

CPC分类号： G02B27/26 ,  G03B21/2073 ,  G03B33/12 ,  G03B35/26 ,  H04N9/31 ,  H04N9/3167 ,  H04N13/324 ,  H04N13/337 ,  H04N13/363

摘要： A projection apparatus has a first light beam having a first state of polarization and containing a first set of primary colors, a first light modulator arrangement for spatially modulating the polarization state of the first light beam to encode a first image thereon in the first set of primary colors, a second light beam having a second state of polarization and containing a second set of primary colors, and a second light modulator arrangement for spatially modulating the polarization state of the second light beam to encode a second image thereon. A polarizing beam splitter having first and second input ports to admit the first and second encoded light beams. Light of one polarization state incident on the first port is transmitted to the output port and light of another polarization state incident on the second port is reflected to said output port so that said transmitted and reflected light is combined into a common output beam at said output port. The first and second images having different polarizations contained in the output beam projected onto a display screen can be viewed with the aid of glasses with selective color filters responsive to the first and second sets of primary colors. By using different sets of primary colors considerable efficiencies and economies can be realized relative to a pure polarization-based system.

摘要翻译： 投影装置具有第一光束，其具有第一偏振状态并且包含第一组原色;第一光调制器装置，用于空间调制第一光束的偏振状态，以在第一组 原色，具有第二偏振状态并包含第二组原色的第二光束，以及用于空间调制第二光束的偏振状态以在其上编码第二图像的第二光调制器装置。 一种具有第一和第二输入端口以允许第一和第二编码光束的偏振分束器。 入射在第一端口上的一个偏振状态的光被传输到输出端口，并且入射在第二端口上的另一个偏振状态的光被反射到所述输出端口，使得所述透射和反射光在所述输出处被组合成公共输出光束 港口。 可以借助于具有响应于第一和第二组原色的选择性滤色器的眼镜来观看包含在投影到显示屏幕上的输出光束中的具有不同偏振度的第一和第二图像。 通过使用不同的原色组，相对于纯极化系统，可以实现相当大的效率和经济性。

公开(公告)号：US07926949B1

公开(公告)日：2011-04-19

申请号：US11780910

申请日：2007-07-20

申请人： Simon Andrew Boothroyd

发明人： Simon Andrew Boothroyd

IPC分类号： G03B21/00 ,  G02B27/26

CPC分类号： G03B35/24 ,  G02B27/2207 ,  G02B27/2264 ,  G02B27/26 ,  G02B27/283 ,  G03B33/12 ,  G03B35/16 ,  G03B35/26

摘要： A dual-mode stereoscopic three-dimensional (3D) projection display with two micro-display panels is provided. In a passive 3D mode, the 3D projection display simultaneously projects left-eye and right-eye images with first and second polarizations on the screen. The first and second polarizations are orthogonal to each other. In a first passive mode, a polarization-preserving screen is used and passive polarizing glasses can be worn to see the 3D images. In a second passive mode, an ordinary screen is used and 3D color filter glasses can be worn to see the 3D images. In an active mode, the display projects left-eye and right-eye images, with both first and second polarizations, time-sequentially and liquid crystal shutter glasses synchronized with the image sources can be worn to see 3D images. The dual-mode 3D projection display can be switched electronically to project 2D images when the same 2D image signals are fed to both micro-display panels. The dual-mode 3D projection display is more light efficient than conventional single panel projection displays because at any given time, at least two primary colors are displayed on screen with orthogonal polarizations.

摘要翻译： 提供具有两个微显示面板的双模立体三维（3D）投影显示。 在无源3D模式下，3D投影显示同时在屏幕上投射第一和第二偏振的左眼和右眼图像。 第一和第二极化彼此正交。 在第一被动模式中，使用偏振保留屏幕，并且可以佩戴无源偏光眼镜以观看3D图像。 在第二被动模式中，使用普通屏幕，并且可以佩戴3D彩色滤光镜来观看3D图像。 在活动模式下，显示器可以佩戴第一和第二偏振的时间顺序的左眼图像和右眼图像，并且可以佩戴与图像源同步的液晶快门眼镜以观看3D图像。 当将相同的2D图像信号馈送到两个微显示面板时，双模3D投影显示器可以电子式切换以投影2D图像。 双模3D投影显示器比传统的单面投影显示器更为有效，因为在任何给定的时间，至少两个基色在正交偏振下显示在屏幕上。

公开(公告)号：US07690794B2

公开(公告)日：2010-04-06

申请号：US11770247

申请日：2007-06-28

申请人： Simon Andrew Boothroyd

发明人： Simon Andrew Boothroyd

IPC分类号： G03B21/14

CPC分类号： G02B27/283 ,  G02B27/26 ,  H04N9/3167

摘要： An image-combining device comprising of a polarizing beam-splitter, two waveplates and two reflective micro-electro-mechanical display panels is described. It combines images with orthogonally polarized light. Projection display apparatus having such image-combining device(s) are used to project two-dimensional or three-dimensional images with orthogonally polarized light.

摘要翻译： 描述了包括偏振分束器，两个波片和两个反射式微电机显示面板的图像合成装置。 它将图像与正交偏振光组合。 使用具有这种图像合成装置的投影显示装置用于投影具有正交偏振光的二维或三维图像。

公开(公告)号：US20080180636A1

公开(公告)日：2008-07-31

申请号：US11770247

申请日：2007-06-28

申请人： Simon Andrew Boothroyd

发明人： Simon Andrew Boothroyd

IPC分类号： G02B27/26 ,  G02B27/28 ,  G03B21/14

CPC分类号： G02B27/283 ,  G02B27/26 ,  H04N9/3167

摘要： An image-combining device comprising of a polarizing beam-splitter, two waveplates and two reflective micro-electro-mechanical display panels is described. It combines images with orthogonally polarized light. Projection display apparatus having such image-combining device(s) are used to project two-dimensional or three-dimensional images with orthogonally polarized light.

摘要翻译： 描述了包括偏振分束器，两个波片和两个反射式微电机显示面板的图像合成装置。 它将图像与正交偏振光组合。 使用具有这种图像合成装置的投影显示装置用于投影具有正交偏振光的二维或三维图像。