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    SCREEN AND PROJECTION SYSTEM
    1.
    发明申请
    SCREEN AND PROJECTION SYSTEM 有权
    屏幕和投影系统

    公开(公告)号：US20130170028A1

    公开(公告)日：2013-07-04

    申请号：US13620064

    申请日：2012-09-14

    申请人： Osamu Arakawa ,  Hiroyuki Shindo ,  Toshiaki Hashizume ,  Tatsuo Uchida ,  Yoshito Suzuki ,  Baku Katagiri

    发明人： Osamu Arakawa ,  Hiroyuki Shindo ,  Toshiaki Hashizume ,  Tatsuo Uchida ,  Yoshito Suzuki ,  Baku Katagiri

    IPC分类号： G03B21/60

    CPC分类号： G03B21/60 ,  G03B21/28

    摘要： A screen in which observation distance may be adjusted while maintaining image brightness and a projection system using the screen. In a light control layer of a screen, a first angle region that determines a diffusion distribution of a reflected light is different according to the screen position in a control direction in which light diffusion control is performed. Accordingly, a diffusion distribution of image light emitted from a screen surface is adjusted to be tilted downward by an upper end and upward by a lower end according to the screen position. Thus, for example, a size of a diffused angle range is maintained to be 30°, and a direction in which the image light is diffusion-emitted corresponds to an assumed position of an observer. The projection image can be observed while maintaining brightness of an image and the observation distance can be adjusted to be short.

    摘要翻译： 可以在保持图像亮度的同时调整观察距离的屏幕和使用屏幕的投影系统。 在屏幕的光控制层中，确定反射光的扩散分布的第一角度区域根据执行光漫射控制的控制方向上的屏幕位置而不同。 因此，根据屏幕位置，从屏幕表面发射的图像光的扩散分布被调整为向上倾斜向下并且向下倾斜。 因此，例如，扩散角范围的大小保持为30°，并且图像光被扩散发射的方向对应于观察者的假定位置。 可以在保持图像的亮度的同时观察投影图像，并且可以将观察距离调整为短。

    Screen and projection system
    2.
    发明授权
    Screen and projection system 有权
    屏幕投影系统

    公开(公告)号：US08780444B2

    公开(公告)日：2014-07-15

    申请号：US13620064

    申请日：2012-09-14

    申请人： Osamu Arakawa ,  Hiroyuki Shindo ,  Toshiaki Hashizume ,  Tatsuo Uchida ,  Yoshito Suzuki ,  Baku Katagiri

    发明人： Osamu Arakawa ,  Hiroyuki Shindo ,  Toshiaki Hashizume ,  Tatsuo Uchida ,  Yoshito Suzuki ,  Baku Katagiri

    IPC分类号： G03B21/56

    CPC分类号： G03B21/60 ,  G03B21/28

    摘要： A screen in which observation distance may be adjusted while maintaining image brightness and a projection system using the screen. In a light control layer of a screen, a first angle region that determines a diffusion distribution of a reflected light is different according to the screen position in a control direction in which light diffusion control is performed. Accordingly, a diffusion distribution of image light emitted from a screen surface is adjusted to be tilted downward by an upper end and upward by a lower end according to the screen position. Thus, for example, a size of a diffused angle range is maintained to be 30°, and a direction in which the image light is diffusion-emitted corresponds to an assumed position of an observer. The projection image can be observed while maintaining brightness of an image and the observation distance L can be adjusted to be short.

    摘要翻译： 可以在保持图像亮度的同时调整观察距离的屏幕和使用屏幕的投影系统。 在屏幕的光控制层中，确定反射光的扩散分布的第一角度区域根据执行光漫射控制的控制方向上的屏幕位置而不同。 因此，根据屏幕位置，从屏幕表面发射的图像光的扩散分布被调整为向上倾斜向下并且向下倾斜。 因此，例如，扩散角范围的大小保持为30°，并且图像光被扩散发射的方向对应于观察者的假定位置。 可以在保持图像的亮度的同时观察投影图像，并且可以将观察距离L调整为较短。

    Refelctive front screen
    3.
    发明授权
    Refelctive front screen 有权
    反光屏幕

    公开(公告)号：US08654442B2

    公开(公告)日：2014-02-18

    申请号：US13450051

    申请日：2012-04-18

    申请人： Tatsuo Uchida ,  Yoshito Suzuki ,  Baku Katagiri ,  Toshiaki Hashizume ,  Hiroyuki Shindo ,  Osamu Arakawa

    发明人： Tatsuo Uchida ,  Yoshito Suzuki ,  Baku Katagiri ,  Toshiaki Hashizume ,  Hiroyuki Shindo ,  Osamu Arakawa

    IPC分类号： G03B21/60

    CPC分类号： G03B21/60 ,  G03B21/602

    摘要： A screen which reflects light emitted from a projector includes a light diffusion layer through which light incident from a specific angular region is diffused and transmitted and through which light incident from the other angular region is transmitted straight; area pairs having a mirror forming area and a non-mirror forming area; a light transmissive layer having a back surface, on which the area pairs are disposed, and an opposite surface being bonded to a back side of the light diffusion layer; and a specular reflection film formed on a back surface of each mirror forming area. An inclination of the mirror forming area with respect to a normal line of the screen close to the projector becomes larger than the inclination of the mirror forming area far from the projector within a cross section perpendicular to the mirror forming areas inside the screen.

    摘要翻译： 反射从投影仪发出的光的屏幕包括光扩散层，通过该光扩散层，从特定角度区域入射的光被透射通过该光扩散层，并且从另一角度区域入射的光直线透射穿过该光扩散层; 区域对具有镜形成区域和非镜像区域; 具有背面的透光层，其上设置有区域对，以及与光扩散层的背面接合的相反表面; 以及形成在每个镜面形成区域的后表面上的镜面反射膜。 反射镜形成区域相对于靠近投影仪的屏幕的法线的倾斜度大于垂直于屏幕内的反射镜形成区域的横截面内远离投影仪的反射镜形成区域的倾斜度。

    Surface light source device
    6.
    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。

    THIN BACKLIGHT SYSTEM AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME
    7.
    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).