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    Optical device, light-condensing backlight system, and liquid crystal display
    1.
    发明授权
    Optical device, light-condensing backlight system, and liquid crystal display 有权
    光器件，聚光背光系统和液晶显示器

    公开(公告)号：US07593079B2

    公开(公告)日：2009-09-22

    申请号：US10556688

    申请日：2004-04-15

    申请人： Kentarou Takeda ,  Naoki Takahashi ,  Kazutaka Hara ,  Takahiro Fukuoka

    发明人： Kentarou Takeda ,  Naoki Takahashi ,  Kazutaka Hara ,  Takahiro Fukuoka

    IPC分类号： G02F1/1335 ,  G02F1/13

    CPC分类号： G02B27/288 ,  G02F1/133536 ,  G02F2001/133541 ,  G02F2001/133638

    摘要： An optical element of the invention comprises at least three laminated circular-polarization-type-reflection polarizers (a) whose wavelength bands for selective reflection of polarized light overlap one another; a layer (b1) which is placed between at least a pair of the circular-polarization-type-reflection polarizers (a) and has a front retardation of substantially zero (in the normal direction) and a retardation of at least λ/8 with respect to incident light inclined by at least 30° relative to the normal direction; and a layer (b2) which is placed between at least another pair of the circular-polarization-type-reflection polarizers (a) and has a front retardation of substantially zero (in the normal direction) and a retardation of at most λ/2 with respect to incident light inclined by 60° relative to the normal direction. The optical element condenses or collimates incident light from a light source and can control transmission of light at large incident angles relative to the normal direction, increase front brightness and reduce coloration.

    摘要翻译： 本发明的光学元件包括至少三个层叠的圆偏振型反射偏振器（a），其偏振光的选择性反射的波长带彼此重叠; 放置在至少一对圆偏振型反射偏振器（a）之间的层（b1），并且具有基本为零（正向）的正面延迟和至少为λ/ 8的延迟， 相对于相对于法线方向倾斜至少30度的入射光; 和位于至少另一对圆偏振型反射偏振器（a）之间的层（b2），并且具有基本上为零（正方向）的前向延迟和至多λ/ 2的延迟 相对于相对于法线方向倾斜60°的入射光。 光学元件使来自光源的入射光凝结或准直，可以相对于法线方向控制大的入射角度的光的透射，增加前方亮度，减少着色。

    Optical device, light-condensing backlight system, and liquid crystal display
    4.
    发明申请
    Optical device, light-condensing backlight system, and liquid crystal display 有权
    光器件，聚光背光系统和液晶显示器

    公开(公告)号：US20060238867A1

    公开(公告)日：2006-10-26

    申请号：US10556688

    申请日：2004-04-15

    申请人： Kentarou Takeda ,  Naoki Takahashi ,  Kazutaka Hara ,  Takahiro Fukuoka

    发明人： Kentarou Takeda ,  Naoki Takahashi ,  Kazutaka Hara ,  Takahiro Fukuoka

    IPC分类号： G02B27/28

    CPC分类号： G02B27/288 ,  G02F1/133536 ,  G02F2001/133541 ,  G02F2001/133638

    摘要： An optical element of the invention comprises at least three laminated circular-polarization-type-reflection polarizers (a) whose wavelength bands for selective reflection of polarized light overlap one another; a layer (b1) which is placed between at least a pair of the circular-polarization-type-reflection polarizers (a) and has a front retardation of substantially zero (in the normal direction) and a retardation of at least λ/8 with respect to incident light inclined by at least 30° relative to the normal direction; and a layer (b2) which is placed between at least another pair of the circular-polarization-type-reflection polarizers (a) and has a front retardation of substantially zero (in the normal direction) and a retardation of at most μ/2 with respect to incident light inclined by 60° relative to the normal direction. The optical element condenses or collimates incident light from a light source and can control transmission of light at large incident angles relative to the normal direction, increase front brightness and reduce coloration.

    摘要翻译： 本发明的光学元件包括至少三个层叠的圆偏振型反射偏振器（a），其偏振光的选择性反射的波长带彼此重叠; 放置在至少一对圆偏振型反射偏振器（a）之间的层（b 1），并且具有基本上为零（在正常方向上）的前延迟和至少λ/ 8的延迟 相对于相对于法线方向倾斜至少30度的入射光; 和位于至少另一对圆偏振型反射偏振器（a）之间的层（b 2），并且具有基本为零（正向）的前延迟，并且延迟至多为mu / 2相对于相对于法线方向倾斜60°的入射光。 光学元件使来自光源的入射光凝结或准直，可以相对于法线方向控制大的入射角度的光的透射，增加前方亮度，减少着色。

    Optical element, light condensation backlight system, and liquid crystal display
    5.
    发明申请
    Optical element, light condensation backlight system, and liquid crystal display 有权
    光学元件，光聚合背光系统和液晶显示器

    公开(公告)号：US20070132914A1

    公开(公告)日：2007-06-14

    申请号：US10576614

    申请日：2004-08-24

    申请人： Naoki Takahashi ,  Kazutaka Hara ,  Miki Shiraogawa ,  Kentarou Takeda

    发明人： Naoki Takahashi ,  Kazutaka Hara ,  Miki Shiraogawa ,  Kentarou Takeda

    IPC分类号： G02F1/1335

    CPC分类号： G02B6/0056 ,  G02B5/3016 ,  G02B27/28 ,  G02F1/133536 ,  G02F1/13362 ,  G02F2001/133543

    摘要： An optical element comprising: a polarizing element (A), separating incident light into polarization to then emit light, and made of a cholesteric liquid crystal, and a linearly polarized light reflection polarizer (B) transmitting linearly polarized light with one polarization axis and selectively reflecting linearly polarized light with the other polarization axis perpendicular to the one polarization axis, wherein the polarizing element (A) has a distortion rate with respect to emitting light to incident light in the normal direction of 0.5 or more and a distortion rate with respect to emitting light to incident light at an angle inclined from the normal direction by 60 degrees or more of 0.2 or less, the polarizing element (A) has a function increasing a linearly polarized light component of emitting light as incidence angle is larger; is capable of condensation and collimation of incident light from a light source and capable of suppressing transmission of light in an arbitrary direction.

    摘要翻译： 一种光学元件，包括：偏振元件（A），将入射光分离成极化，然后发射光，并由胆甾型液晶构成;以及线偏振光反射偏振器（B），其透射具有一个偏振轴的线性偏振光并且选择性地 反射具有垂直于所述一个偏振轴的另一偏振轴的线偏振光，其中所述偏振元件（A）具有相对于向所述法线方向的入射光发射光的失真率为0.5或更大，并且相对于 以与正常方向倾斜60度以上的角度对入射光进行发光，其中偏振元件（A）的入射角度越大，具有增加发射光的线偏振光分量的功能; 能够冷凝来自光源的入射光的准直并能够抑制任意方向的光的透过。

    Sheet with anti-counterfeit functions and manufacturing method for same, article, authentication card, bar code label and authentication system
    6.
    发明申请
    Sheet with anti-counterfeit functions and manufacturing method for same, article, authentication card, bar code label and authentication system 失效
    具有防伪功能和制造方法的纸张，文章，认证卡，条形码标签和认证系统

    公开(公告)号：US20060108063A1

    公开(公告)日：2006-05-25

    申请号：US11280735

    申请日：2005-11-17

    申请人： Seiji Umemoto ,  Miki Shiraogawa ,  Takahiro Fukuoka ,  Naoki Takahashi ,  Kentarou Takeda

    发明人： Seiji Umemoto ,  Miki Shiraogawa ,  Takahiro Fukuoka ,  Naoki Takahashi ,  Kentarou Takeda

    IPC分类号： G03C1/492

    CPC分类号： B42D25/364 ,  B41M3/14 ,  B41M7/0045 ,  B42D25/00 ,  B42D25/328 ,  B42D2033/26 ,  G03C5/08

    摘要： A sheet with anti-counterfeit functions for making counterfeiting highly difficult in the case where authentication information is recorded using the properties of cholesteric liquid crystal is provided. A cholesteric liquid crystal layer 110 having a selective reflected wavelength band in at least the visible light region is provided in such a manner that this cholesteric liquid crystal layer 110 is a single layer of which thickness is approximately uniform, and an authentication region 112 of which selective reflected wavelength band is different is provided in at least one place. Preferably, an adhesive layer 130 is provided on one side of the cholesteric liquid crystal layer 110. Preferably, a base 120 is provided between the cholesteric liquid crystal layer 110 and the adhesive layer 130. Preferably, a light absorbing layer 140 is provided on adhesive layer 130 of the cholesteric liquid crystal layer 110.

    摘要翻译： 提供了在使用胆甾型液晶的性质记录认证信息的情况下，具有防伪功能的纸张，其制造伪造非常困难。 至少在可见光区域具有选择性反射波长带的胆甾型液晶层110以这样的方式被提供，使得该胆甾醇型液晶层110是厚度近似均匀的单层，其认证区域112 选择性反射波长带在至少一个地方是不同的。 优选地，粘合剂层130设置在胆甾型液晶层110的一侧。优选地，在胆甾醇型液晶层110和粘合剂层130之间设置基底120.优选地，在粘合剂上设置光吸收层140 胆甾型液晶层110的层130。

    Light source and liquid crystal display
    7.
    发明授权
    Light source and liquid crystal display 失效
    光源和液晶显示

    公开(公告)号：US08373829B2

    公开(公告)日：2013-02-12

    申请号：US12912011

    申请日：2010-10-26

    申请人： Kazutaka Hara ,  Naoki Takahashi ,  Kentarou Takeda ,  Miki Shiraogawa

    发明人： Kazutaka Hara ,  Naoki Takahashi ,  Kentarou Takeda ,  Miki Shiraogawa

    IPC分类号： G02F1/1335 ,  G09F13/04

    CPC分类号： G02B6/005 ,  G02B6/0055

    摘要： A light source comprising sidelight type backlight light guide plate (L), wherein a transmittance angle dependent layer (T1) which transmits normally incident light and reflects obliquely incident light is disposed on one surface of the sidelight type backlight light guide plate (L), and a reflection plate (R) having a repetitive slope structure is disposed on the other surface of the sidelight type backlight light guide plate (L). The invention light source is less in absorption loss due to repetition of light reflection and the like.

    摘要翻译： 1.一种侧光式背光源导光板（L）的光源，其特征在于，在所述侧光型背光导光板（L）的一个面上配置有透射正常入射光并反射倾斜入射光的透射角依赖层（T1） 并且具有重复斜面结构的反射板（R）设置在侧面型背光导光板（L）的另一个表面上。 由于重复光反射等，本发明光源的吸收损失较小。

    Optical element, polarizing element, lighting device, and liquid crystal display
    8.
    发明授权
    Optical element, polarizing element, lighting device, and liquid crystal display 失效
    光学元件，偏振元件，照明装置和液晶显示器

    公开(公告)号：US07633678B2

    公开(公告)日：2009-12-15

    申请号：US12318708

    申请日：2009-01-07

    申请人： Naoki Takahashi ,  Kentarou Takeda ,  Kazutaka Hara ,  Miki Shiraogawa

    发明人： Naoki Takahashi ,  Kentarou Takeda ,  Kazutaka Hara ,  Miki Shiraogawa

    IPC分类号： G02B5/30 ,  G02B27/28 ,  G02F1/1335

    CPC分类号： G02F1/133536 ,  G02B5/3066

    摘要： An optical element of the invention comprises at least two laminated layers of reflective polarizer; and at least one retardation layer for changing polarization properties laminated between the reflective polarizers, the combination of the layers being designed so as to provide a incident-light transmittance depending on an incident angle of an incident light and designed such that a shielded light is not absorbed but reflected. The optical element can effectively shield transmitted lights with respect to obliquely incident lights and can control coloring.

    摘要翻译： 本发明的光学元件包括至少两层反射型偏振片层压层; 以及用于改变在反射偏振器之间层叠的偏振特性的至少一个延迟层，这些层的组合被设计成根据入射光的入射角提供入射光透射率，并且设计成使得屏蔽光不是 吸收但反映。 光学元件可以有效地屏蔽相对于倾斜入射光的透射光并且可以控制着色。

    Optical element, light condensation backlight system, and liquid crystal display
    9.
    发明申请
    Optical element, light condensation backlight system, and liquid crystal display 审中-公开
    光学元件，光聚合背光系统和液晶显示器

    公开(公告)号：US20070064168A1

    公开(公告)日：2007-03-22

    申请号：US10576772

    申请日：2004-08-24

    申请人： Miki Shiraogawa ,  Kentarou Takeda ,  Kazutaka Hara ,  Naoki Takahashi

    发明人： Miki Shiraogawa ,  Kentarou Takeda ,  Kazutaka Hara ,  Naoki Takahashi

    IPC分类号： G02F1/1333

    CPC分类号： G02B6/0056 ,  G02B27/28

    摘要： An optical element comprising: a polarizing element (A), separating incident light into polarization to then emit light, and made of a cholesteric liquid crystal, wherein the polarizing element (A) has a distortion rate with respect to emitting light to incident light in the normal direction of 0.5 or more and a distortion rate with respect to emitting light to incident light at an angle inclined from the normal direction by 60 degrees or more of 0.2 or less, the polarizing element (A) has a function increasing a linearly polarized light component of emitting light as incidence angle is larger; a ½ wavelength plate (B); a retardation layer (C) giving almost zero retardation to incident light in the front direction (normal direction) and giving a retardation to incident light in a direction inclined from the normal direction; and a ¼ wavelength plate (D); being arranged in this order, and further a linearly polarized light reflection polarizer (E), transmitting linearly polarized light with one polarization axis and selectively reflecting linearly polarized light with the other polarization axis perpendicular to the one polarization axis, is arranged on the ¼ wavelength plate (D) so that the transmission axis of the linearly polarized light reflection polarizer (E) and an axis of the transmitted light, which is transmitted through the polarizing element (A) to the ¼ wavelength plate (D) in this order, are the same direction. The optical element is capable of condensation and collimation of incident light from a light source and capable of suppressing transmission of light in an arbitrary direction.

    摘要翻译： 1.一种光学元件，包括：偏振元件（A），将入射光分离成极化，然后发光，并由胆甾醇型液晶制成，其中所述偏振元件（A）具有相对于发射入射光的失真率 法线方向为0.5以上，相对于从法线方向倾斜60度以上的角度向入射光照射光的变形率为0.2以下，偏振光元件（A）具有线性极化 发光的光分量入射角较大; ½波长板（B）; 相对于入射光在正面方向（法线方向）几乎为零的延迟层（C），并向与法线方向倾斜的方向的入射光提供延迟; 和¼波长板（D）; 并且还具有以一个偏振轴透射线偏振光并且选择性地反射与一个偏振轴垂直的另一个偏振轴的线偏振光的线偏振光反射偏振器（E），其被配置在1/4波长 （D），使得偏振光元件（A）的透射轴与透射光轴（D）依次传播到¼波长板（D）的平板（D）分别为 方向相同 光学元件能够冷凝和准直来自光源的入射光并且能够抑制光在任意方向上的透射。