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    PLANAR LIGHT SOURCE DEVICE
    12.
    发明申请
    PLANAR LIGHT SOURCE DEVICE 审中-公开
    平面光源设备

    公开(公告)号：US20110228558A1

    公开(公告)日：2011-09-22

    申请号：US13130758

    申请日：2009-10-13

    申请人： Tatsuo Uchida ,  Yoshito Suzuki ,  Tohru Kawakami ,  Takahiro Ishinabe ,  Baku Katagiri ,  Yoshihiro Hashimoto ,  Shoichi Ishihara ,  Shuichi Kozaki ,  Yutaka Ishii

    发明人： Tatsuo Uchida ,  Yoshito Suzuki ,  Tohru Kawakami ,  Takahiro Ishinabe ,  Baku Katagiri ,  Yoshihiro Hashimoto ,  Shoichi Ishihara ,  Shuichi Kozaki ,  Yutaka Ishii

    IPC分类号： F21V7/22

    CPC分类号： G02B6/0055 ,  G02B6/0031 ,  G02B6/0046 ,  G02B6/0053

    摘要： Conventional planar light source devices have a problem that increasing a utilization ratio of light results in a very narrow angle distribution of light. A planar light source device of the present invention has a light source (1), a light guide plate (2) for introducing light coming from the light source via a light-incident plane of the light guide plate and emits the light from almost all area of a light emission plane, and a light source side reflector (3) for reflecting the light coming from the light source and light which comes from the light source and is reflected by the light-incident plane of the light guide plate so that the reflected light is emitted to the light-incident plane of the light guide plate. The planar light source device further includes a lower side reflector (5) for introducing light emitted from the lower plane of the light guide plate into the light guide plate again, and an optical member (4) for changing a traveling direction of first light (10) which is introduced via the light-incident plane to pass through the light guide plate and is emitted from an upper plane of the light guide plate to a vertical upper direction. The lower side reflector is inclined by an angle of 5°-60° with respect to the lower plane of the light guide plate, and θ2=90°−θ1±10° is met where θ1 (°) represents a maximum angle between the upper plane and a direction in which the first light is emitted from the upper plane and θ2 (°) represents an apex angle of the optical member.

    摘要翻译： 传统的平面光源装置具有提高光的利用率导致光的非常窄的角度分布的问题。 本发明的平面光源装置具有：光源（1），导光板（2），用于经由导光板的入射面导入来自光源的光，并从几乎全部发射光 光源侧反射器（3），用于反射来自光源的光和来自光源的光，并被导光板的光入射面反射，使得 反射光被发射到导光板的光入射面。 平面光源装置还包括用于将从导光板的下平面发射的光再次引入导光板的下侧反射器（5），以及用于改变第一光的行进方向的光学部件（4） 10），其经由光入射面引入以穿过导光板，并且从导光板的上平面发射到垂直上方。 下侧反射器相对于导光板的下平面倾斜5°-60°，和2θ= 90° - 角度; 1±10°，其中＆1;（°） 表示上平面与第一光从上平面发射的方向和角度之间的最大角度; 2（°）表示光学构件的顶角。

    Rear projection display screen
    14.
    发明申请
    Rear projection display screen 审中-公开
    背投显示屏

    公开(公告)号：US20070103603A1

    公开(公告)日：2007-05-10

    申请号：US10530294

    申请日：2003-10-10

    申请人： Baku Katagiri ,  Tetsuya Miyashita ,  Takahiro Ishinabe ,  Tatsuo Uchida

    发明人： Baku Katagiri ,  Tetsuya Miyashita ,  Takahiro Ishinabe ,  Tatsuo Uchida

    IPC分类号： H04N9/12

    CPC分类号： G03B21/62

    摘要： A rear projection display screen with a simplified structure that displays a high-quality image without the occurrence of stray light and moiré fringing is provided. The rear projection display screen includes a scattering film 2 that uniformly scatters light incident from an angle in a specific angular range (from −α to −β) within a specific angular region (from β to α), and has a viewing angle of 40° or more in either the vertical direction or the horizontal direction or both the vertical direction and the horizontal direction. The rear projection display screen of the present invention may include a protective plate 3 disposed on the scattering film, if necessary, the protective plate 3 protecting the scattering film.

    摘要翻译： 提供具有简化结构的背投显示屏，其显示高质量图像而不发生杂散光和莫尔条纹。 背投显示屏包括散射膜2，其将特定角度范围（从β到α）中的特定角度范围（从α到β）的角度入射的光均匀地散射，并且具有40°的视角 在垂直方向或水平方向上，或者垂直方向和水平方向上都是°。 本发明的背投显示屏可以包括设置在散射膜上的保护板3，如果需要，保护板3保护散射膜。