Optical element for lateral light spreading in back-lit displays and system using same
    94.
    发明授权
    Optical element for lateral light spreading in back-lit displays and system using same 有权
    用于背光显示器中的横向光扩散的光学元件和使用它的系统

    公开(公告)号:US07903194B2

    公开(公告)日:2011-03-08

    申请号:US11166723

    申请日:2005-06-24

    IPC分类号: G02F1/1335

    摘要: A display system has a controlled transmission mirror disposed between the light sources and the display panel. The controlled transmission mirror includes a light-diverting input coupling element facing the light sources, a light-diverting output coupling element facing the display panel and a multilayer reflector between the input and output coupling elements. The controlled transmission mirror laterally spreads the light, making the illumination of the panel more uniform. The controlled transmission mirror may include a transparent substrate between the input and output coupling elements for additional light spreading. The light sources may be positioned within the controlled transmission mirror, rather than behind it. The output coupling element can be insensitive to polarization, so the light passing out of the controlled transmission mirror is unpolarized, or the output coupling element can be polarization sensitive so that the output light is polarized.

    摘要翻译: 显示系统具有设置在光源和显示面板之间的受控的透射镜。 受控透射镜包括面向光源的光转向输入耦合元件,面向显示面板的光转向输出耦合元件和在输入和输出耦合元件之间的多层反射器。 受控的传输镜横向扩展光,使得面板的照明更均匀。 受控透射反射镜可以包括在输入和输出耦合元件之间的透明衬底,用于附加的光扩散。 光源可以位于受控的透射镜内,而不是在其后面。 输出耦合元件对极化不敏感,因此从受控透射镜反射出的光是非偏振的,或者输出耦合元件可以是偏振敏感的,使得输出光被极化。

    Head-up display with polarized light source and wide-angle p-polarization reflective polarizer
    97.
    发明授权
    Head-up display with polarized light source and wide-angle p-polarization reflective polarizer 有权
    带偏振光源和广角p偏振反射偏振片的平视显示器

    公开(公告)号:US06952312B2

    公开(公告)日:2005-10-04

    申请号:US10335458

    申请日:2002-12-31

    摘要: A head-up display includes a projection system and a window having a target area where a reflective polarizer is positioned to reflect light from the projection system to a viewing area. Light from the projection system is p-polarized and strikes exposed window surface(s) at an acute angle to reduce or eliminate multiple or “ghost” images. The acute angle is closely matched to a Brewster angle of the exposed window surface(s). The reflective polarizer includes a multilayer stack with refractive indices of individual layers chosen to reflect p-polarized light substantially more than s-polarized light over a wide angular range that includes the acute angle. The reflective polarizer also can reflect infrared light to reduce cabin heating from solar radiation.

    摘要翻译: 平视显示器包括投影系统和具有目标区域的窗口,其中反射偏振器被定位成将来自投影系统的光反射到观看区域。 来自投影系统的光是p偏振的,并以锐角撞击暴露的窗口表面以减少或消除多个或“重影”图像。 锐角与暴露的窗表面的布鲁斯特角度紧密匹配。 反射偏振器包括多层叠层,其具有各个层的折射率,以在包括锐角的宽角度范围内反射p偏振光基本上大于s偏振光。 反射型偏振器还可以反射红外光,以减少太阳辐射下的客舱供暖。