Vehicular headlamp having improved yield of high-beam luminous e

Details Vehicular headlamp having improved yield of high-beam luminous e Vehicular headlamp having improved yield of high-beam luminous e

1998-11-04

2000-07-25

Tso, Laura K.

Illumination

Supported by vehicle structure

Plural light sources

362543, 362517, F21W10102

Patent

active

060929189

ABSTRACT:
A vehicular headlamp provided with a reflector composed of a low-beam reflecting surface and a high-beam reflecting surface disposed closely adjacent vertically one another, which headlamp provides a high yield of high-beam luminous energy. The reflector is formed so that the focal distance of the lower, high-beam reflecting surface is less the focal distance of the upper, low-beam reflecting surface so as to increase the solid angle defined by the high-beam reflecting surface. Preferably, the rear end portion of the high-beam reflecting surface is displaced rearward of a rear end portion of the low-beam reflecting surface, thus further increasing the solid angle of the high-beam reflecting surface.

REFERENCES:
patent: 5136482 (1992-08-01), Urbschat
patent: 5190368 (1993-03-01), Sekiguchi
patent: 5353203 (1994-10-01), Bertling et al.
patent: 5607219 (1997-03-01), Brummel et al.
patent: 5702173 (1997-12-01), Kawamura
patent: 5735591 (1998-04-01), Ruckwied
patent: 5941633 (1999-08-01), Saito et al.

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