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    • 8. 发明申请
    • IMAGE PROJECTION SYSTEM WITH A POLARIZING BEAM SPLITTER
    • 具有偏振光束分离器的图像投影系统
    • WO2004023203A3
    • 2004-05-06
    • PCT/US0328504
    • 2003-09-09
    • MOXTEK INCHANSEN DOUGLAS PPERKINS RAYMOND TGARDNER ERIC
    • HANSEN DOUGLAS PPERKINS RAYMOND TGARDNER ERIC
    • G02F1/1335G02B5/30G02B27/28G02F1/13357G03B21/00G03B21/14H04N9/31
    • H04N9/3105G02B5/3058G02B27/283G03B21/005G03B21/2073G03B33/12H04N9/3167
    • An image projection system (10) includes one or more wire grid polarizing beam sputters (14a-c, 28, 29) and one or more transmissive arrays (16a-c}. A polarized light beam from a light source (22) and pre-polarizer (26a-c) is directed towards the transmissive array which modulates the polarization of the polarized light beam by selectively altering the polarization of the polarized light beam to encode image information thereon and creating a modulated beam. The modulated beam is directed towards the wire grid polarizing beam sputter which acts as an analyzer to separate the modulated beam into reflected and transmitted beams. A screen (18) is disposed in one of the reflected or transmitted beams to display the encoded image information. The polarizing beam sputter is oriented at an angle with respect to the modulated beam such that the reflected beam is directed away from the transmissive array. A plurality of transmissive arrays can be used for different colors. One or more polarizing beam sputters (28, 29) can act as both analyzers and combiners.
    • 一种图像投影系统(10)包括一个或多个线栅偏振光束(14a-c,28,29)和一个或多个透射阵列(16a-c)。来自光源(22)和预 偏振器(26a-c)指向透射阵列,其通过选择性地改变偏振光束的偏振来调制偏振光束的偏振,以对其上的图像信息进行编码并产生调制的光束,调制的光束被引导到 线栅偏振光束溅射器,其用作分析器以将经调制的光束分离成反射和透射的光束;屏幕(18)设置在反射或透射光束之一中以显示编码图像信息,偏振光束溅射器 相对于调制束的角度,使得反射光束远离透射阵列。多个透射阵列可用于不同的颜色。一个或多个极化剂 g光束喷射器(28,29)可以用作分析仪和组合器。