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    • 1. 发明授权
    • Projector headlamp
    • 投影机前大灯
    • US06821008B2
    • 2004-11-23
    • US10267901
    • 2002-10-09
    • Yosuke TokoroHitoshi TaniuchiTakashi Akutagawa
    • Yosuke TokoroHitoshi TaniuchiTakashi Akutagawa
    • B60Q104
    • F21S41/635F21S41/255F21S41/275
    • A conventional projector headlamp has low efficiency because an amount of light is shaded almost half by a shutter for a low-beam light distribution. In addition, only a projection lens is seen in the installed condition, inviting old-fashioned designs disadvantageously. In a projector headlamp (1) of the invention, a vertical section passing through the center of a projection lens (5) includes a convex front surface and a flat rear surface (5a). A line connecting the upper end to the lower end on the rear surface (5a) is tilted to the vertical. Thus, the projection lens (5) has a prismatic action for directing the entire light downward. This is effective to reduce an amount of light to be shaded by a shutter (4) and provide improved brightness and novel designed appearances.
    • 常规的投影仪前照灯的效率低,因为用于近光灯配光的遮光板几乎被遮挡了一半。 此外,在安装状态下只能看到投影透镜,不利地引用老式设计。 在本发明的投影仪前照灯(1)中,穿过投影透镜(5)的中心的垂直部分包括凸形前表面和平坦后表面(5a)。 连接上表面(5a)的上端与下端的线垂直地倾斜。 因此,投影透镜(5)具有用于将整个光线向下引导的棱镜作用。 这可以有效地减少由遮光板(4)遮蔽的光量并提供改进的亮度和新颖的设计外观。