Discharge-type headlamp having reduced glare

Details Discharge-type headlamp having reduced glare Discharge-type headlamp having reduced glare

1993-01-22

1994-03-29

Lazarus, Ira S.

Illumination

Vehicle steering mechanism or element moves pivoted lamp or...

Tie rod element controlled

362263, 362297, 362308, 362309, 362332, 362346, B60Q 104

Patent

active

052991016

ABSTRACT:
An automotive headlamp employing a discharge bulb as a light source in which flaring light which could blind the driver of an oncoming vehicle is eliminated and the visibility of objects in the upper part of the road is improved. A reflecting surface of a reflector is divided into a lower reflecting surface and an upper reflecting surface, the lower reflecting surface being a substantially lower half portion that receives a scattered flux attributable to metal halide sediments of a bulb and the upper reflecting surface being a substantially upper half portion that receives a nonscattered flux. The lower reflecting surface is further divided into a right reflecting surface, which is a right half portion thereof, and a left reflecting surface, which is a left half portion thereof. The right and left reflecting surfaces are inclined to predetermined degrees so that reflective fluxes can be inclined in respective left and right directions. Diffusing lens steps are formed within a range of the lower half portion of a front lens that covers a front opening of the reflector, the range allowing the fluxes from the right reflecting surface and the left reflecting surface to pass.

REFERENCES:
patent: 4208704 (1980-06-01), Draper
patent: 4760501 (1988-06-01), de Vrijer
patent: 4899261 (1990-02-01), Blusseau et al.
patent: 4928214 (1990-05-01), Oyama

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