利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

24 条记录 (耗时 0.031 秒)

    Rear projection screen using internal reflection
    2.
    发明授权
    Rear projection screen using internal reflection 失效
    背投屏使用内反射

    公开(公告)号：US06417966B1

    公开(公告)日：2002-07-09

    申请号：US09348809

    申请日：1999-07-07

    申请人： Robert S. Moshrefzadeh ,  Patrick A. Thomas ,  John C. Nelson ,  Theodore W. Hodapp ,  Hsin-Hsin Chou ,  Richard J. Pokorny ,  Raghunath Padiyath

    发明人： Robert S. Moshrefzadeh ,  Patrick A. Thomas ,  John C. Nelson ,  Theodore W. Hodapp ,  Hsin-Hsin Chou ,  Richard J. Pokorny ,  Raghunath Padiyath

    IPC分类号： G03B2160

    CPC分类号： G03B21/62

    摘要： An optically dispersing film for a rear projection system includes reflecting surfaces disposed so as to reflect light passing therethrough into at least one dispersion plane. The reflecting surfaces are formed by structures, of a first refractive index, disposed within a layer of material having a second refractive index. The structures have light absorbing bases at the viewing side of the film. In some embodiments, the reflecting surfaces are disposed at one or more angles so as to reflect light into a number of different directions. In other embodiments, the layer of material having the second refractive index includes diffusing particles that diffuse the light. The film permits the asymmetric dispersion of image light in a rear projection system, so that the light may be selectively directed towards the viewer.

    摘要翻译： 用于后投影系统的光学分散膜包括设置成将穿过其中的光反射到至少一个色散平面中的反射表面。 反射表面由具有第一折射率的结构形成，该结构设置在具有第二折射率的材料层内。 该结构在膜的观察侧具有光吸收基底。 在一些实施例中，反射表面设置成一个或多个角度，以将光反射到多个不同的方向。 在其他实施例中，具有第二折射率的材料层包括漫射光的扩散粒子。 该膜允许图像光在后投影系统中的不对称分散，使得光可以选择性地指向观察者。

    Projection screen using variable power lenticular lens for asymmetric viewing angle
    8.
    发明授权
    Projection screen using variable power lenticular lens for asymmetric viewing angle 失效
    投影屏使用可变功率双凸透镜进行非对称视角

    公开(公告)号：US06624934B1

    公开(公告)日：2003-09-23

    申请号：US09335994

    申请日：1999-06-18

    申请人： Robert S. Moshrefzadeh ,  John C. Nelson ,  Patrick A. Thomas

    发明人： Robert S. Moshrefzadeh ,  John C. Nelson ,  Patrick A. Thomas

    IPC分类号： G03B2156

    CPC分类号： G03B21/625

    摘要： Rear projection screens use lenticular lens films as light dispersing components. A single lenticular lens film includes lenticular lenses having different focal powers, or includes lenticular lenses formed in two dimensional patterns. The lenticular lens films improve the brightness uniformity over the entire screen as viewed by a viewer who is located at a specific position. The specific position is typically selected to be the most probable location of the viewer for the particular application.

    摘要翻译： 背投屏幕使用双凸透镜膜作为光分散元件。 单个双凸透镜膜包括具有不同焦焦度的双凸透镜，或包括以二维图案形成的双凸透镜。 双凸透镜薄膜在位于特定位置的观看者观察时，提高整个屏幕上的亮度均匀性。 特定位置通常被选择为特定应用的观看者最可能的位置。

    Methods of making wire grid optical elements by preferential deposition of material on a substrate
    9.
    发明授权
    Methods of making wire grid optical elements by preferential deposition of material on a substrate 失效
    通过在衬底上优先沉积材料制造线栅光学元件的方法

    公开(公告)号：US06391528B1

    公开(公告)日：2002-05-21

    申请号：US09542256

    申请日：2000-04-03

    申请人： Robert S. Moshrefzadeh ,  Patrick A. Thomas

    发明人： Robert S. Moshrefzadeh ,  Patrick A. Thomas

    IPC分类号： G02B530

    CPC分类号： G02B5/3058 ,  G02B5/1857 ,  G03H2001/026

    摘要： A method for making wire grid optical elements by preferentially depositing material on a substrate is disclosed. Material can be preferentially deposited by directing an electromagnetic interference pattern on to a substrate to selectively heat areas of the substrate coincident with the interference pattern maxima. The substrate can then be exposed to gas phase material that is capable of preferentially accumulating on surfaces based on surface temperature.

    摘要翻译： 公开了一种通过在衬底上优先沉积材料来制造线栅光学元件的方法。 可以通过将电磁干扰图案引导到基板上来选择性地加热与干涉图案最大值一致的基板的区域来优先沉积材料。 然后可以将基底暴露于能够基于表面温度优先积累在表面上的气相材料。

    Rear projection screen with reduced speckle
    10.
    发明授权
    Rear projection screen with reduced speckle 有权
    背投屏幕减少斑点

    公开(公告)号：US06466368B1

    公开(公告)日：2002-10-15

    申请号：US09560267

    申请日：2000-04-26

    申请人： Andrew J. Piepel ,  Robert S. Moshrefzadeh ,  Patrick A. Thomas ,  Thomas R. Gehring

    发明人： Andrew J. Piepel ,  Robert S. Moshrefzadeh ,  Patrick A. Thomas ,  Thomas R. Gehring

    IPC分类号： G03B2160

    CPC分类号： G03B21/625

    摘要： A rear projection screen has one or more internal layers that reduce the speckle perceived by a viewer. A screen assembly has a light-source side and a viewing side. The assembly includes a screen layer to disperse light passing through the screen from the light source side and a matte surface disposed on the viewing side of the screen assembly to reduce ambient glare. A first speckle contrast reducing layer is disposed between the screen layer and the matte surface to reduce speckle formed at the matte surface.

    摘要翻译： 背投屏幕具有​​一个或多个内层，其减少观察者感觉到的斑点。 屏幕组件具有光源侧和观看侧。 该组件包括一个屏幕层，用于分散从光源侧通过屏幕的光线，以及设置在屏幕组件的观察侧的消光表面，以减少周围的眩光。 第一个斑点对比度降低层设置在屏幕层和无光泽表面之间，以减少在无光泽表面形成的斑点。