公开(公告)号：US5914759A

公开(公告)日：1999-06-22

申请号：US930283

申请日：1997-09-30

申请人： Eizaburo Higuchi ,  Yasuhiro Koike

发明人： Eizaburo Higuchi ,  Yasuhiro Koike

IPC分类号： F21V8/00 ,  G02B6/00 ,  G02F1/1335

CPC分类号： G02B6/0053 ,  G02B6/0041 ,  G02B6/0046

摘要： A fluorescent lamp L is arranged in the vicinity of an incidence surface 2 of a light scattering guide plate 1. A prism sheet 4' having rows of prism elements and rows of lens elements on each side is arranged outside an exiting surface 5. The angles of inclination of slopes 4a and 4b satisfy a condition that .phi.a>.phi.b. The slopes 4a and 4b extend in the transverse direction of the light scattering guide plate 1, and slopes 4c and 4d extend in the longitudinal direction. A reflector 3 is arranged along a rear surface 6. Light emitted from the exiting surface 5 is efficiently propagated by an inner prism surface toward a forward direction, shifted in the transverse direction by an outer prism surface or the lens element surfaces 4c and 4d, and is then returned inwardly. The path histories of light emitted from the prism sheet 4' is diversified to improve visual characteristics. The peak level of brightness as viewed in the forward direction is improved and brightness is smoothly reduced according to deviation from the peak direction.

摘要翻译： PCT No.PCT / JP97 / 00328 Sec。 371日期：1997年9月30日 102（e）1997年9月30日PCT PCT 1997年2月7日提交PCT公布。 公开号WO97 / 29398 日期1997年8月14日荧光灯L配置在光散射导向板1的入射面2附近。具有排列的棱镜元件和每一侧透镜元件列的棱镜片4' 斜面4a和4b的倾斜角度满足条件phi> phi b。 斜面4a和4b在光散射导向板1的横向方向上延伸，并且斜面4c和4d在纵向方向上延伸。 反射器3沿着后表面6布置。从出射表面5发射的光由内棱镜表面朝向正方向有效地传播，通过外棱镜表面或透镜元件表面4c和4d在横向上移位， 然后向内返回。 从棱镜片4'发射的光的路径历史多样化，以改善视觉特性。 从向前方向观察的亮度的峰值水平提高，并且根据与峰值方向的偏差平滑地降低亮度。

公开(公告)号：US06222689B1

公开(公告)日：2001-04-24

申请号：US09171879

申请日：1998-10-28

申请人： Eizaburo Higuchi ,  Yasuhiro Koike

发明人： Eizaburo Higuchi ,  Yasuhiro Koike

IPC分类号： G02B504

CPC分类号： G02B6/0053

摘要： An asymmetric prism sheet, surface light source and LCD to which the asymmetric prism sheet is applied is provided. A cold cathode tube backed by a reflector supplies light to an incidence surface of a directional emission guide plate. A polarization separation sheet and a liquid crystal panel are disposed outside of the asymmetric prism sheet, with the reflector disposed along a back face. First and second slopes of each asymmetric prism element rows have inclination angles &phgr;a, &phgr;b which are selected as to allow a secondary ray to exist inside a main ray emitted from a frontal face in a manner such that the main ray is deflected toward a generally frontal direction by way of internal reflection of the second slope while the secondary ray is deflected toward a generally frontal direction by way of double internal reflection of the first and second slopes. An outer face provides an uneven face such as non-glare-processed face, orthogonal prismatic face or lens face. Outside of an outer face may be arranged elements such as additional prism sheet or lens sheet.

摘要翻译： 提供了一种不对称棱镜片，表面光源和应用不对称棱镜片的LCD。 由反射器支撑的冷阴极管将光提供给定向发射导向板的入射表面。 偏振分离片和液晶面板设置在不对称棱镜片的外侧，反射器沿背面设置。 每个不对称棱镜元件行的第一和第二斜面具有倾斜角度phia，phib，其被选择为允许二次射线存在于从正面发射的主光线内，使得主光线朝向大致正面偏转 方向通过第二斜面的内部反射，而二次射线通过第一和第二斜面的双内反射朝向大致正面方向偏转。 外表面设置不平坦面，例如非眩光处理面，正交棱镜面或透镜面。 在外表面之外可以设置诸如附加棱镜片或透镜片的元件。

公开(公告)号：US5887964A

公开(公告)日：1999-03-30

申请号：US809890

申请日：1997-06-09

申请人： Eizaburo Higuchi ,  Yasuhiro Koike

发明人： Eizaburo Higuchi ,  Yasuhiro Koike

IPC分类号： G02B6/00 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/13357 ,  F21V13/04

CPC分类号： G02B6/0053

摘要： There is provided a surface light source device which is excellent in whiteness and softness of a luminant surface and able to retain reflective appearance from occurring. The surface light source device is effectively applied to back lighting in a liquid crystal display. A fluorescent lamp (L) is disposed in the vicinity of an incidence surface (2) of a light guide plate (1). A prism sheet (4') having prism surfaces formed on both surfaces is disposed along an exiting surface (5). The prism sheet (4') is oriented such that prism rows (4a, 4b) on the inside surface run in the transverse direction of the light guide plate (1) while prism rows (4c, 4d) on the outside surface run in the longitudinal direction of the light guide plate (1). A reflector (3) is disposed along a back surface (6) of the light guide plate (1). Light emitted from the exiting surface (5) is led to the frontal direction by the action of the prism rows (4a, 4b) and then returned toward the light guide plate (1) after having been shifted in the transverse direction by the prism rows (4c, 4d). The history of a path of light emitted from the prism sheet (4') is diversified through this process, thereby improving visual characteristics.

摘要翻译： PCT No.PCT / JP96 / 02151 Sec。 371日期：1997年6月9日 102（e）日期1997年6月9日PCT提交1996年7月30日PCT公布。 第WO97 / 05522号公报 日期1997年2月13日提供了一种表面光源装置，其具有优异的发光体表面的白度和柔软度，并且能够保持反射外观的发生。 表面光源装置有效地应用于液晶显示器中的背光照明。 荧光灯（L）设置在导光板（1）的入射面（2）附近。 沿着离开的表面（5）设置具有形成在两个表面上的棱镜表面的棱镜片（4'）。 棱镜片（4'）的取向使得内表面上的棱镜列（4a，4b）在导光板（1）的横向方向上延伸，而外表面上的棱镜行（4c，4d）在 导光板（1）的纵向。 反射器（3）沿着导光板（1）的后表面（6）设置。 从出射表面（5）发射的光通过棱镜列（4a，4b）的作用被引向正面方向，然后在横向方向上被棱镜列移动之后返回到导光板（1） （4c，4d）。 从棱镜片（4'）发射的光的路径的历史通过该过程而多样化，从而改善视觉特性。

公开(公告)号：US5966192A

公开(公告)日：1999-10-12

申请号：US732462

申请日：1996-11-04

申请人： Eizaburo Higuchi ,  Yasuhiro Koike

发明人： Eizaburo Higuchi ,  Yasuhiro Koike

IPC分类号： G02B6/00 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/133 ,  F21V7/04

CPC分类号： G02B6/0053 ,  G02B6/0046 ,  G02B6/0055 ,  G02F1/133615

摘要： Provided are a surface light source device whose bright surface is excellent in whiteness and softness and a liquid crystal display that ensures a high visual quality. A relatively thick side end surface of a light scattering guide 1, which has a wedge-shaped profile, forms an incidence surface 2. A fluorescent lamp L is located in the vicinity of the incidence surface 2, and a silver foil R is arranged around it. A prism sheet 4 is located outside an exit surface 5. The orientation of the prism sheet 4 is selected so that the running direction of prismatic rows is in line with the transverse direction of the light scattering guide 1. The prismatic surface may be directed inward or outward. A prism sheet 8 is interposed between a back surface 6 of the light scattering guide 1 and a reflector (silver foil) 3. The prism sheet 8 is arranged so that its prismatic surface is directed inward. The orientation of prismatic rows formed on the prismatic surface is selected so that the running direction of the prismatic rows is in line with the vertical direction of the light scattering guide 1.

摘要翻译： PCT No.PCT / JP96 / 00561 Sec。 371日期：1996年11月4日 102（e）日期1996年11月4日PCT 1996年3月7日PCT公布。 公开号WO96 / 27817 日期1996年9月12日提供了其明亮的表面具有优异的白度和柔软度的表面光源装置和确保高视觉质量的液晶显示器。 具有楔形轮廓的光散射引导件1的相对厚的侧端面形成入射面2.荧光灯L位于入射面2附近，并且银箔R围绕 它。 棱镜片4位于出射表面5的外侧。棱镜片4的取向选择为棱镜列的行进方向与光散射引导件1的横向一致。棱镜表面可以向内 或向外。 在光散射导向器1的后表面6和反射器（银箔）3之间插入棱镜片8.棱镜片8被布置为使其棱镜表面向内指向。 选择形成在棱镜表面上的棱柱列的取向，使得棱镜列的行进方向与光散射引导件1的垂直方向一致。

公开(公告)号：US08297824B2

公开(公告)日：2012-10-30

申请号：US12629246

申请日：2009-12-02

申请人： Toshihisa Saito ,  Masaru Furujiku ,  Tsuyoshi Ishikawa ,  Eizaburo Higuchi

发明人： Toshihisa Saito ,  Masaru Furujiku ,  Tsuyoshi Ishikawa ,  Eizaburo Higuchi

IPC分类号： F21V7/04

CPC分类号： G02B6/0018 ,  G02B6/0016 ,  G02B6/0041

摘要： To solve an uneven light quantity caused in a case where a light guide plate, in which light from a spot light source such as an LED enters an surface, changes by 90 degrees and exits the light to the outside, is used as a backlight. The light guide plate of the invention includes a light flux unifying region. The light flux unifying region has an incident surface, a first surface, and an exit surface. Light fluxes emitted from a light source enter the incident surface. The first surface is almost perpendicular to the incident surface and the intensity distribution of the light fluxes having entered is unified at the first surface. The exit surface is disposed almost parallel with the incident surface and the unified light fluxes exit from the exit surface. A boundary line between the incident surface and the first surface has a zigzag surface.

摘要翻译： 为了解决在来自诸如LED的点光源的光进入表面的光的导光板变为90度并且将光离开到外部的情况下引起的不均匀的光量被用作背光。 本发明的导光板包括光通量区域。 光通量区域具有入射表面，第一表面和出射表面。 从光源发射的光通量进入入射面。 第一表面几乎垂直于入射表面，并且已经进入的光束的强度分布在第一表面是统一的。 出射面几乎与入射面平行，并且统一的光束从出射面出射。 入射表面和第一表面之间的边界线具有锯齿形表面。

公开(公告)号：US20100172150A1

公开(公告)日：2010-07-08

申请号：US12629246

申请日：2009-12-02

申请人： Toshihisa Saito ,  Masaru Furujiku ,  Tsuyoshi Ishikawa ,  Eizaburo Higuchi

发明人： Toshihisa Saito ,  Masaru Furujiku ,  Tsuyoshi Ishikawa ,  Eizaburo Higuchi

IPC分类号： F21V7/22 ,  F21V7/04

CPC分类号： G02B6/0018 ,  G02B6/0016 ,  G02B6/0041

摘要： To solve an uneven light quantity caused in a case where a light guide plate, in which light from a spot light source such as an LED enters an surface, changes by 90 degrees and exits the light to the outside, is used as a backlight. The light guide plate of the invention includes a light flux unifying region. The light flux unifying region has an incident surface, a first surface, and an exit surface. Light fluxes emitted from a light source enter the incident surface. The first surface is almost perpendicular to the incident surface and the intensity distribution of the light fluxes having entered is unified at the first surface. The exit surface is disposed almost parallel with the incident surface and the unified light fluxes exit from the exit surface. A boundary line between the incident surface and the first surface has a zigzag surface.

摘要翻译： 为了解决在来自诸如LED的点光源的光进入表面的光的导光板变为90度并且将光离开到外部的情况下引起的不均匀的光量被用作背光。 本发明的导光板包括光通量区域。 光通量区域具有入射表面，第一表面和出射表面。 从光源发射的光通量进入入射面。 第一表面几乎垂直于入射表面，并且已经进入的光束的强度分布在第一表面是统一的。 出射面几乎与入射面平行，并且统一的光束从出射面出射。 入射表面和第一表面之间的边界线具有锯齿形表面。

公开(公告)号：US06241358B1

公开(公告)日：2001-06-05

申请号：US09423542

申请日：1999-11-12

申请人： Eizaburo Higuchi ,  Tsuyoshi Ishikawa ,  Akihiro Horibe

发明人： Eizaburo Higuchi ,  Tsuyoshi Ishikawa ,  Akihiro Horibe

IPC分类号： F21V704

CPC分类号： G02B6/0068 ,  G02B6/0021 ,  G02B6/0046 ,  G02B6/0053 ,  G02B6/0071 ,  G02B6/008

摘要： A set of light guide blocks B L 1˜B L 3 provide a tandem arrangement. The light guide block B L 1 is supplied with light from a primary light source L 1. The other primary light sources L 2, L 3 are arranged in recesses formed around distal portions of the light guide blocks B L 1, B L 2, supplying the light guide blocks B L 2, B L 3 with primary light, respectively. Overlap of mutually neighboring light guide blocks gives tang-shaped overlapping portions 17a, 17b, 27a, 27b as well as overlapping bands 17c, 27c, thereby avoiding electrodes at both ends of the primary light sources L 2, L 3 from causing short of brightness. The light guide blocks B L 1˜B L 3 may be in the form of unified single guide plate. Primary light sources L 1˜L 3 may have a shape such that electrode sections of both ends are curved. A compact surface light source device with a large emission area is provided.

摘要翻译： 一组导光块B L 1〜B L 3提供串联布置。 光导块BL 1被供给来自一次光源L 1的光。另外的一次光源L 2，L 3配置在形成在导光块BL 1，BL 2的前端部周围的凹部中，供给光 引导块BL 2，BL 3分别具有初级光。 相互邻近的导光块的重叠产生了脚形重叠部分17a，17b，27a，27b以及重叠带17c，27c，从而避免了一次光源L 2，L 3的两端的电极导致亮度不足 。 导光块B L 1〜B L 3可以是统一的单导板的形式。 主光源L 1〜L 3可以具有两端的电极部分弯曲的形状。 提供了具有大发射面积的紧凑型面光源装置。