Motor vehicle headlight with condensing lens and diaphragm
    1.
    发明授权
    Motor vehicle headlight with condensing lens and diaphragm 失效
    汽车头灯带聚光透镜和隔膜

    公开(公告)号:US4517630A

    公开(公告)日:1985-05-14

    申请号:US445430

    申请日:1982-11-30

    IPC分类号: F21V5/00 F21V7/00

    摘要: The optic axis of a vehicle headlight comprises a reflector, an incandescent helix and a convergent lens. The reflection surface of the reflector is parabolic in the horizontal midplane section and is elliptical in vertical median section. A narrow band of light spreading out laterally is thus produced without supplementary optical components, particularly the diffusion disk or dispersion lens. A sharp light-to-dark boundary is obtained by a diaphragm having an effective straight edge 18 located below the outer ellipse focus, which is coincident with that one of the principal foci of the converging lens which is the nearer to the reflector.

    摘要翻译: 车辆头灯的光轴包括反射器,白炽螺旋和会聚透镜。 反射器的反射面在水平中平面部分是抛物线的,在垂直中间部分是椭圆形的。 因此,在没有辅助光学部件,特别是扩散盘或分散透镜的情况下,产生横向扩展的窄带光。 通过具有位于外椭圆焦点下方的有效直线边缘18的光阑获得尖锐的明暗边界,其与会聚透镜的更靠近反射器的主焦点的一个重合。