HIGH EFFICIENCY LIQUID CRYSTAL DISPLAY PROJECTION SYSTEM
    1.
    发明申请
    HIGH EFFICIENCY LIQUID CRYSTAL DISPLAY PROJECTION SYSTEM 失效
    高效液晶显示投影系统

    公开(公告)号:US20070258018A1

    公开(公告)日:2007-11-08

    申请号:US11777720

    申请日:2007-07-13

    IPC分类号: G02F1/1335

    摘要: A transmitting-type liquid crystal display projection system including a planar light source which emits planar white beam or planar R/G/B beams in succession is provided. A first polarization filter receives the planar light source and polarizes the same to be in a first polarization state. A liquid-crystal light valve receives the polarized planar light source, and converts the first polarization state to a second polarization state having a corresponding gray level. A second polarization filter receives a light output from the liquid crystal light valve to produce a second polarization light beam. A projection unit projects the second polarization light beam onto a display plane. Using the same planar light source, a polarization beam splitting (PBS) device with a refection-type liquid crystal light valve can be used to achieve the reflection-type projection system.

    摘要翻译: 提供了一种发射型液晶显示投影系统,其包括平面光源,其连续地发射平面的白光束或平面的R / G / B光束。 第一偏振滤光器接收平面光源并使其偏振成第一偏振状态。 液晶光阀接收极化平面光源,并将第一偏振态转换为具有相应灰度级的第二偏振状态。 第二偏振滤波器接收从液晶光阀输出的光,以产生第二偏振光束。 投影单元将第二偏振光束投影到显示平面上。 使用相同的平面光源,可以使用具有反射型液晶光阀的偏振分束(PBS)装置来实现反射型投影系统。

    High efficiency liquid crystal display projection system
    2.
    发明授权
    High efficiency liquid crystal display projection system 失效
    高效液晶显示投影系统

    公开(公告)号:US07589797B2

    公开(公告)日:2009-09-15

    申请号:US11777720

    申请日:2007-07-13

    IPC分类号: G02F1/1335 G03B21/14

    摘要: A transmitting-type liquid crystal display projection system including a planar light source which emits planar white beam or planar R/G/B beams in succession is provided. A first polarization filter receives the planar light source and polarizes the same to be in a first polarization state. A liquid-crystal light valve receives the polarized planar light source, and converts the first polarization state to a second polarization state having a corresponding gray level. A second polarization filter receives a light output from the liquid crystal light valve to produce a second polarization light beam. A projection unit projects the second polarization light beam onto a display plane. Using the same planar light source, a polarization beam splitting (PBS) device with a refection-type liquid crystal light valve can be used to achieve the reflection-type projection system.

    摘要翻译: 提供了一种发射型液晶显示投影系统,其包括平面光源,其连续地发射平面的白光束或平面的R / G / B光束。 第一偏振滤光器接收平面光源并使其偏振成第一偏振状态。 液晶光阀接收极化平面光源,并将第一偏振态转换为具有相应灰度级的第二偏振状态。 第二偏振滤波器接收从液晶光阀输出的光,以产生第二偏振光束。 投影单元将第二偏振光束投影到显示平面上。 使用相同的平面光源,可以使用具有反射型液晶光阀的偏振分束(PBS)装置来实现反射型投影系统。