公开(公告)号：US5067053A

公开(公告)日：1991-11-19

申请号：US443449

申请日：1989-11-30

申请人： Kunio Akizuki

发明人： Kunio Akizuki

IPC分类号： F21S8/12 ,  F21S8/10 ,  F21V7/00 ,  F21V7/09 ,  F21V13/00

CPC分类号： F21S48/137

摘要： In a headlamp having a light-diverging concave mirror, the inner reflecting surface of the concave mirror is a composite paraboloidal surface of revolution made of multiple different paraboloidal surfaces of revolution taking as common focus a predetermined point on the optical axis and smoothly joined to each other, and the lamp bulb is so disposed as to have the center thereof disposed as substantially coincident with the common focus. Each of the different paraboloidal surfaces of revolution composing the inner reflecting surface reflects the rays incident from the lamp bulb in directions away from the optical axis in a horizontal plane in which the optical axis lies, in directions parallel to the optical axis or in directions nearer to the optical axis. Since the angles of the reflected rays with respect too the optical axis are different depending upon their distances from the common focus, the luminous intensity distribution pattern can have an ample amount of light and the pattern can be extended nearly uniformly from its center horizontally to the right and left, and also the light amount can be adjusted. Therefore, the rays emitted from the lamp bulb can be utilized most effectively for illumination of the road surface.

公开(公告)号：US5055981A

公开(公告)日：1991-10-08

申请号：US481100

申请日：1990-02-16

申请人： Naohi Nino

发明人： Naohi Nino

IPC分类号： F21S8/12 ,  F21V7/00 ,  F21V11/16

CPC分类号： F21S48/137 ,  F21S48/1172 ,  F21S48/1388 ,  F21S48/145

摘要： An automotive projector type headlight including a light source, a reflector for reflecting the light forward, a shade for partially shading and thus contouring the reflected light, and a projecting lens for projecting the contoured light forward. The light source comprises a main filament and a sub-filament extending generally along the optical axis. The reflector has a plurality of radially divided reflective surface portions. An upper reflective surface portion reflects the light from the sub-filament and converge it to a first converging position located above the optical axis. A shading edge of the shade is positioned near to the first converging position. The projecting lens has a focus near to the shading edge. A lower reflective surface portion reflects the light from the main filament, converges it to a second converging position extending horizontally and converges the light to a third converging position extending vertically. Left and right reflective surface portions act to converge the light from both filaments and to diffuse it thereafter. And a portion of the reflective surface is formed into paraboloid of rotation having the focus near to the filaments.

摘要翻译： 一种汽车投影仪型头灯，包括光源，用于反射光的反射器，用于部分阴影的阴影，并因此使反射光形成轮廓;以及投影透镜，用于向前投影成像光。 光源包括主丝和大致沿光轴延伸的副丝。 反射器具有多个径向分开的反射表面部分。 上反射表面部分反射来自子丝的光并将其会聚到位于光轴上方的第一会聚位置。 阴影的阴影边缘位于第一会聚位置附近。 投影透镜具有靠近阴影边缘的焦点。 下反射表面部分反射来自主丝的光，将其会聚到水平延伸的第二会聚位置，并将光会聚到垂直延伸的第三会聚位置。 左右反射表面部分用于使来自两根细丝的光会聚并在其后扩散。 并且反射表面的一部分被形成具有聚焦在灯丝附近的旋转抛物面。

公开(公告)号：US4945454A

公开(公告)日：1990-07-31

申请号：US321826

申请日：1989-03-09

申请人： Wolfgang Bunse ,  Hans-Otto Ernst ,  Heinz Droste ,  Franz-Josef Kalze ,  Wolfgang Peitz

发明人： Wolfgang Bunse ,  Hans-Otto Ernst ,  Heinz Droste ,  Franz-Josef Kalze ,  Wolfgang Peitz

IPC分类号： G02B5/10 ,  F21S8/10 ,  F21V7/00 ,  F21V7/09 ,  F21V14/02 ,  F21V14/04

CPC分类号： F21S48/137 ,  F21V7/09

摘要： A reflector for a dimmed or dimmable motor vehicle headlight is divided into an asymmetrical wedge-shaped sector, an upper sector, and a lower sector which are stepped axially from on another. The reflection surface is thereby formed such that a desirable light distribution is achieved without a correcting lens in horizontal and vertical areas perpendicular to a middle axis of the headlight. The desired light distribution of the asymmetrical wedge-shape sector is such that a corresponding point of every reflected light-filament image of each arbitrary point of the asymmetrical wedge-shaped reflection surface is positioned immediately near a prescribed borderline, such as a legislatively mandated borderline.

摘要翻译： 用于调光或可调光的机动车辆大灯的反射器被分为从另一个轴向上阶梯形的不对称楔形扇形部分，上部扇形部分和下部扇形部分。 由此形成反射面，使得在垂直于前照灯的中轴的水平和垂直区域中没有校正透镜而实现期望的光分布。 不对称楔形扇区的期望的光分布使得不对称楔形反射表面的每个任意点的每个反射的灯丝图像的对应点紧邻预定的边界，例如立法规定的边界 。

公开(公告)号：US4779179A

公开(公告)日：1988-10-18

申请号：US892504

申请日：1986-08-01

申请人： Hiroo Oyama ,  Kouichi Masuyama

发明人： Hiroo Oyama ,  Kouichi Masuyama

IPC分类号： F21S8/10 ,  F21V7/00 ,  F21V14/02 ,  F21V14/04 ,  G02B5/10

CPC分类号： F21S48/137 ,  F21S48/1376

摘要： A composite reflecting mirror for a headlamp comprises a plurality of paraboloidal columnar reflecting surfaces, the reflecting surfaces having their respective focal points fall on a horizontal line extending through approximately the axis of symmetry of the mirror. The composite reflecting mirror is laterally substantially divided into three portions, i.e., a left end portion, a right end portion and a central portion. The relationship of the average value of the focal lengths of the plurality of paraboloidal columnar reflecting surfaces included in the respective portions is such that the average value of the focal lengths of the left end portion is greater than that of the central portion, and the average value of the focal lengths of the right end portion is greater than that of the central portion.

摘要翻译： 用于头灯的复合反射镜包括多个抛物面柱状反射表面，其反射表面具有各自的焦点落在大致沿着镜的对称轴延伸的水平线上。 复合反射镜横向大致分为三部分，即左端部分，右端部分和中心部分。 包括在各部分中的多个抛物面柱状反射面的焦距的平均值的关系使得左端部的焦距的平均值大于中央部的焦距的平均值，平均值 右端部的焦距值大于中央部的焦距值。

公开(公告)号：US4755919A

公开(公告)日：1988-07-05

申请号：US87686

申请日：1987-08-19

申请人： Gerhard Lindae ,  Rainer Neumann ,  Peter Perthus

发明人： Gerhard Lindae ,  Rainer Neumann ,  Peter Perthus

IPC分类号： F21V7/00 ,  F21V7/09

CPC分类号： F21S48/137

摘要： The reflection surface of a rectangular reflector for a lower beam headlamp is composed of four sectors delimited by transition lines. Two diametrically opposed left and right sectors (11, 12) form a part of a paraboloid projecting a hot light spot. The diametrically opposed upper and lower sectors (13, 14) are part of a paraboloid-ellipsoid defining a parabola in its vertical center section and an ellipsis in its horizontal center section. The latter sectors project a light spot having a broad light dispersion and an increased front field illumination. The reflected light beam corresponds substantially to a dimmed lower light beam to be projected on the road so that a light dispersing glass of the headlamp does not require any optical means for light beam adjustment.

摘要翻译： 用于下光束前照灯的矩形反射器的反射表面由由过渡线限定的四个扇区组成。 两个直径相对的左右扇区（11,12）形成抛射热点的抛物面的一部分。 直径相对的上部和下部扇区（13,14）是在其垂直中心部分中限定抛物线的抛物面椭圆体的一部分，并且在其水平中心部分中具有省略号。 后一个部门投射出具有广泛的光散射和增加的前场照明的光点。 反射光束基本上对应于要投影在道路上的变​​暗的较低光束，使得前照灯的分光玻璃不需要用于光束调节的任何光学装置。

公开(公告)号：US4351018A

公开(公告)日：1982-09-21

申请号：US162503

申请日：1980-06-24

申请人： Hector Fratty

发明人： Hector Fratty

IPC分类号： F21S8/10 ,  F21V7/00 ,  F21V14/02 ,  F21V14/04 ,  F21M3/08

CPC分类号： F21S48/137 ,  F21S48/1376

摘要： In a motor vehicle headlamp or the like, the required distribution of the light rays is achieved entirely by selecting an appropriate configuration for the reflector; the front glass is a plain glass having smooth front and rear surfaces. The reflector surface is, as far as possible, a plain paraboloidal surface, but is provided with elongate ribs in selected zones, to produce a spreading of the light rays reflected from these ribs; the light is spread transversely to the length of the ribs. The reflector surface also has offset portions which, like the basic reflector shape, are paraboloidal, but have their focus or foci displaced from the focus of the basic reflector shape.

摘要翻译： 在机动车辆前照灯等中，通过选择反射器的适当构造，完全实现所需的光线分布; 前玻璃是具有光滑的前后表面的平板玻璃。 反射器表面尽可能地是平坦的抛物面，但是在选定区域中设置有细长的肋，以产生从这些肋反射的光线的扩展; 光线横向延伸到肋骨的长度上。 反射器表面还具有像基本反射器形状一样抛物面但具有焦点或焦点从基本反射器形状的焦点偏移的偏移部分。