公开(公告)号：US06742920B2

公开(公告)日：2004-06-01

申请号：US10156133

申请日：2002-05-29

申请人： Kenichi Takada ,  Naoki Uchida ,  Hiroyuki Ishida

发明人： Kenichi Takada ,  Naoki Uchida ,  Hiroyuki Ishida

IPC分类号： F21V1116

CPC分类号： F21S41/43 ,  F21S41/275 ,  F21S41/334

摘要： A vehicular headlamp includes a light source, a reflector for radiating light emitted from the light source forwards, and a cover lens for covering an area in front of the reflector and the light source, wherein the light distribution pattern of the low beam emitted by the vehicular headlamp has a horizontal cut line at least on the side of the opposite lane and wherein a long-distance visibility enchancing portion extending above the horizontal cut line of the light distribution pattern is formed at an end portion of the horizontal cut line.

摘要翻译： 车辆前照灯包括光源，用于从前方发射的光的反射器和用于覆盖反射器前面的区域和光源的盖透镜，其中由所述光源发射的所述近光束的配光图案 车辆用前照灯至少在相对通道的一侧具有水平切割线，并且在水平切割线的端部处形成有在配光图案的水平切割线的上方延伸的长距离可见度增强部。

公开(公告)号：US06325529B1

公开(公告)日：2001-12-04

申请号：US09439783

申请日：1999-11-12

申请人： Takaya Ito

发明人： Takaya Ito

IPC分类号： F21V1116

CPC分类号： F21S41/43

摘要： A vehicular headlamp with a shade that even though the reflective surface of a reflector is constituted of a plurality of reflective elements, the generation of stray light is minimized while a decrease in utilization luminous flux is reduced to the minimum. The reflective surface (20a) of a reflector (20) is constituted of a plurality of reflective elements 20s) that are the divided rectangular segments each of which is longer than is wide. The upper end edge B of the reflective surface (20a) has a curved configuration having irregularities respectively in reflective elements (20s). However, the rear end edge (24Aa) in the upper end portion (24A) of a shielding cap (24) is set to have a curved configuration obtainable from a line of intersection D between a horizontal plane forming an area (24A1) near the rear end edge of the upper end portion (24A) and an imaginary curved plane (C) formed by connecting together the light emission center (A) of a light source bulb (18) and the upper end edge (B) of each reflective element (20s). Consequently, the incidence of light on the upper wall surface (20c) can be stopped substantially without impeding the incidence thereof on the reflective surface (20a).

摘要翻译： 具有阴影的车辆用前照灯即使反射器的反射面由多个反射元件构成也可以将杂散光的产生最小化，同时将利用光通量的减少降至最小。 反射器（20）的反射表面（20a）由多个反射元件20s构成，分割的矩形片段比宽的长。 反射表面（20a）的上端边缘B具有在反射元件（20s）中分别具有不规则性的弯曲构造。 然而，遮蔽帽（24）的上端部（24A）中的后端缘（24Aa）被设定为具有弯曲构造，该弯曲构造可以在形成区域（24A1）附近的水平面之间的交叉线D 上端部（24A）的后端边缘和通过将光源灯泡（18）的发光中心（A）和每个反射元件（18）的上端边缘（B）连接在一起而形成的虚拟曲面（C） （20s）。 因此，可以基本上停止上壁表面（20c）上的光的入射，而不会阻碍其在反射表面（20a）上的入射。

公开(公告)号：US06709143B2

公开(公告)日：2004-03-23

申请号：US10080460

申请日：2002-02-22

申请人： Kenichi Harada ,  Hitoshi Masaki

发明人： Kenichi Harada ,  Hitoshi Masaki

IPC分类号： F21V1116

CPC分类号： G02B6/0051 ,  F21V3/04 ,  G02B6/0065

摘要： A light diffusion sheet comprising a transparent base material sheet; a light diffusion layer laminated on a surface of the base material sheet and containing beads dispersed within a binder; and a sticking-inhibiting layer laminated on a rear face of the base material sheet, wherein the binder of the light diffusion layer contains a thermosetting resin and the sticking-inhibiting layer is a resin layer containing an ionizing radiation curable resin. In the light diffusion sheet of the invention, which employs an ionizing radiation curable resin for the binder of the sticking-inhibiting layer, the cross-linking density of the binder can be increased, whereby the wear resistance of the sticking-inhibiting layer as well as the wear resistance of the rear face of the light diffusion sheet can be increased. Further, possible occurrence of scratches in the sticking-inhibiting layer, which is attributable to the contact between the sticking-inhibiting layer and the beads of the light diffusion layer, can be effectively avoided.