Liquid crystal display projection system using multilayer optical film
polarizers
    35.
    发明授权
    Liquid crystal display projection system using multilayer optical film polarizers 失效
    液晶显示投影系统采用多层光学偏光片

    公开(公告)号:US6088067A

    公开(公告)日:2000-07-11

    申请号:US494978

    申请日:1995-06-26

    摘要: A liquid crystal display (LCD) projection system including a projection panel, a light source, and a reflector. The projection panel includes an LCD and a polarizer on one side of the LCD and a reflective polarizer on the other side. The reflective polarizer is a multilayer stack of pairs of adjacent material layers. Each of the layer pairs exhibits a refractive index difference between the adjacent layers in a first direction in the plane of the reflective polarizer and exhibits essentially no refractive index difference between adjacent layers in a second direction in the plane of the reflective polarizer and orthogonal to the first direction. A quarter-wave plate is secured to the reflective polarizer. Light rays from the light source either pass through the reflective polarizer, and on to the LCD, or are reflected back toward the light source, depending on their polarization. Light which is reflected by the reflective polarizer is reflected by the reflector back toward the LCD again. The use of the quarter-wave plate and the reflector help to recycle what would typically be regarded as wasted light, while at the same time reducing heat build-up within the LCD.

    摘要翻译: 一种液晶显示器(LCD)投影系统,包括投影面板,光源和反射器。 投影面板在LCD的一侧包括LCD和偏振器,另一侧包括反射偏振器。 反射偏振器是一对相邻的材料层的多层堆叠。 每个层对在反射型偏振片的平面中呈现第一方向上的相邻层之间的折射率差,并且在反射型偏振器的平面中的第二方向上的相邻层之间基本上没有折射率差异,并且与 第一个方向 四分之一波片固定到反射型偏振器上。 来自光源的光线通过反射型偏振器,并且依赖于它们的极化,或者被反射回到光源。 由反射偏振器反射的光被反射器反射回LCD。 四分之一波片和反射镜的使用有助于回收通常被认为是浪费的光,同时减少LCD内的热量积聚。

    Lighted hand-holdable novelty article
    38.
    发明授权
    Lighted hand-holdable novelty article 失效
    照亮手持的新奇文章

    公开(公告)号:US6012820A

    公开(公告)日:2000-01-11

    申请号:US6294

    申请日:1998-01-13

    IPC分类号: A63B15/02 A63H33/22 F21V9/14

    摘要: Hand-holdable novelty article comprising a handle, a light source and a plurality of sections of color shifting film. The light source is preferably disposed within an end of the handle. The plurality of sections of color shifting film extend from the end of the handle. During use, light from the light source interacts with the plurality of strands of color shifting film, producing a brilliant colored effect. Movement of the plurality of sections of color shifting film produces multiple colors.

    摘要翻译: 手持式新奇物品,其包括手柄,光源和彩色移动膜的多个部分。 光源优选地设置在手柄的端部内。 彩色移位胶片的多个部分从手柄的端部延伸。 在使用过程中,来自光源的光与多个变色膜股相互作用,产生明亮的色彩效果。 彩色移动胶片的多个部分的移动产生多种颜色。