FRONT PROJECTION SCREEN WITH HIGH CONTRAST
    2.
    发明申请
    FRONT PROJECTION SCREEN WITH HIGH CONTRAST 审中-公开
    具有高对比度的前投影屏幕

    公开(公告)号:US20120013851A1

    公开(公告)日:2012-01-19

    申请号:US13143211

    申请日:2010-01-06

    IPC分类号: G03B21/60 G03B21/28 G02B5/02

    CPC分类号: G03B21/56

    摘要: A light diffusing optical construction is disclosed. The optical construction includes an asymmetric optical diffuser that scatters light in a first direction with a first viewing angle AH and in a second direction orthogonal to the first direction with a second viewing angle AV. The ratio AH/AV is at least about 2. The optical construction also includes a substantially specular reflector that reflects light that is not scattered by the asymmetric optical diffuser. The substantially specular reflector has a first average reflectance Ro in the visible at a substantially zero incident angle and a second average reflectance R45 in the visible at a substantially 45 degree incident angle. The ratio Ro/R45 is at least about 1.5. The optical construction also includes a light absorbing layer that absorbs light that is not reflected by the specular reflector.

    摘要翻译: 公开了一种光散射光学结构。 该光学结构包括一个不对称的光学漫射器,其以第一视角AH在第一方向上散射光,并在第二方向上以第二视角AV散射光。 比例AH / AV至少为2.光学结构还包括基本上镜面的反射器,其反射不被非对称光学漫射器散射的光。 基本上镜面的反射器在可见光中具有基本为零入射角的第一平均反射率Ro和可见光以大致45度入射角的第二平均反射率R45。 比率Ro / R45至少约为1.5。 光学结构还包括吸收未被镜面反射体反射的光的光吸收层。

    Game with privacy material
    4.
    发明授权
    Game with privacy material 失效
    游戏与隐私材料

    公开(公告)号:US6120026A

    公开(公告)日:2000-09-19

    申请号:US6327

    申请日:1998-01-13

    IPC分类号: A63F3/00 A63F9/06

    摘要: Game with a privacy member. The game includes a play region and a directional viewing screen. The directional viewing screen covers at least a portion of the play region such that said portion of the play region is viewable therethrough at a first player position, but is not viewable therethrough at a second player position. The game with privacy member in accordance with the present invention allows for enhancement of existing games, as well as for the creation of new games or new play patterns of existing games.

    摘要翻译: 与隐私成员的游戏。 游戏包括游戏区域和定向观看屏幕。 方向性观看屏幕覆盖播放区域的至少一部分,使得播放区域的所述部分在第一播放器位置可以通过其观看,但是在第二播放器位置不可见。 根据本发明的具有隐私成员的游戏允许增强现有游戏,以及用于创建现有游戏的新游戏或新游戏模式。