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    THIN BACKLIGHT SYSTEM AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME
    5.
    发明申请
    THIN BACKLIGHT SYSTEM AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME 有权

    公开(公告)号：US20110310330A1

    公开(公告)日：2011-12-22

    申请号：US13130787

    申请日：2009-10-21

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

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

    IPC分类号： G02F1/1335 ,  G09F13/08

    CPC分类号： G02B5/045 ,  G02B19/0028 ,  G02B19/0047 ,  G02B19/0066 ,  G02F1/133605 ,  G02F1/133615 ,  G02F2001/133607 ,  G02F2001/133622

    摘要： According to a conventional backlight device for use in a thin full-color display device in which pixels are subjected to a color separation by colored lights, a large chromatic aberration occurs, thereby causing a deterioration in image quality. A thin backlight system in accordance with the present invention includes: a light emitting section (1) for emitting lights that have different dominant wavelengths; and a plurality of light transmitting parts (4) arranged in a predetermined manner, the thin backlight system deflecting the lights and then converging the lights on the plurality of light transmitting parts (4), said thin backlight system, further including: an imaging optical system (3) provided so as to face surfaces, of the plurality of light transmitting parts (4), on which the lights are to be converged, the imaging optical system (3) (i) having a plurality of identical lenses arranged in a vertical and/or a horizontal direction at a pitch found by multiplying a pitch at which the plurality of light transmitting parts (4) are arranged in a vertical and/or a horizontal direction by the number of types of the different dominant wavelengths and (ii) being configured so as to converge the lights from the light emitting section (1) on light transmitting parts (4) to which the different dominant wavelengths of the lights correspond; and an irradiating optical system (2) provided so as to face (a) the light emitting section (1) and (b) a surface, of the imaging optical system (3), through which the lights enter the imaging optical system (3), the irradiating optical system (2) being configured such that (I) the lights from the light emitting section (1), which lights have the different dominant wavelengths, are deflected by the irradiating optical system (2) by at least being reflected by the irradiating optical system (2) so as to be separate from each other, (II) the lights thus deflected leave the irradiating optical system (2) so as to travel in substantially parallel to a normal to each of the plurality of light transmitting parts (4) and (III) the lights enter the plurality of identical lenses of the imaging optical system (3) through a surface, of the imaging optical system (3), which is opposite to the plurality of light transmitting parts (4).

    Surface light source device
    7.
    发明授权
    Surface light source device 有权
    表面光源装置

    公开(公告)号：US08199278B2

    公开(公告)日：2012-06-12

    申请号：US13057184

    申请日：2009-08-04

    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： G02F1/1335

    CPC分类号： G02B6/0068 ,  G02B6/002 ,  G02B6/0046 ,  G02B6/0055

    摘要： Surface light source device includes: point light sources (13); light guide plate (1) having (i) two end parts in length direction, one of which serves as incident surface (2), and (ii) two end parts in thickness direction which serve as exit surface (7) and back surface (8), light guide plate (1) directing light, emitted from point light sources (13), incident on incident surface (2), so as to cause light to exit from substantially entire area of exit surface (7); and reflector (14) which reflects, toward incident surface (2), part of light which is emitted from point light sources (13) and is then reflected from incident surface (2). Incident surface (2) has elliptic arc (10) which is concave part having surface shape along elliptic arc identical to elliptic arc which is part of ellipse (31) having two focal points corresponding to point light sources (13) and reflector (14). Point light sources (13) and reflector (14) are provided on ellipse focal point lines (11 and 12) obtained by moving two focal points in width direction of light guide plate (1).

    摘要翻译： 表面光源装置包括：点光源（13）; 导光板（1）具有（i）长度方向的两个端部，其中一个用作入射表面（2），和（ii）作为出射面（7）和后表面（7）的厚度方向的两个端部 8），引导从点光源（13）射出的入射到入射面（2）的光的导光板（1），使光从出射面（7）的大致整个区域射出; 和反射器（14），其朝着入射面（2）反射从点光源（13）发射的光的一部分，然后从入射面（2）反射。 入射面（2）具有椭圆弧（10），其具有与椭圆弧相同椭圆弧的椭圆弧的表面形状的椭圆弧（10），椭圆弧是具有对应于点光源（13）和反射器（14）的两个焦点的椭圆（31）的一部分， 。 点光源（13）和反射器（14）设置在通过在导光板（1）的宽度方向上移动两个焦点而获得的椭圆焦点线（11和12）上。

    PLANAR LIGHT SOURCE DEVICE
    9.
    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。