Low-beam headlight for a vehicle with same reflector used for di

Details Low-beam headlight for a vehicle with same reflector used for di Low-beam headlight for a vehicle with same reflector used for di

1997-02-14

1999-10-19

Tso, Laura K.

Illumination

Supported by vehicle structure

Projection-type headlamp

362520, F21M 312

Patent

active

059676515

ABSTRACT:
The low-beam headlight has a reflector, in which a light source is mounted and a light-permeable disk which has optical elements. Light from the light source is reflected as a light beam by the reflector which would illuminate a region (62) of a measuring screen (60) placed in front of the headlight so that the region (62) has a horizontal light-dark boundary without being effected by or without action of the light-permeable disk. A first part of the light beam reflected by the reflector illuminates a first part (64a,64b) of the screen under boundary lines (65a,65b) inclined relative to the light-dark boundary (63). A second part of the light beam reflected by the reflector illuminates a second part (66) of the measuring screen between the light-dark boundary (63) and the boundary lines (65a,65b). A portion of the first part of the light beam is at least partially deflected by the optical elements of the light-permeable disk so that it produces the higher lying section of the light-dark boundary associated with the vehicle's own traffic side of the light beam from the low-beam headlight after passing through the disk.

REFERENCES:
patent: 4699032 (1987-10-01), Lietar et al.
patent: 4964021 (1990-10-01), Masin
patent: 5215368 (1993-06-01), Neumann
patent: 5264993 (1993-11-01), Neumann et al.
patent: 5461553 (1995-10-01), Neumann et al.
patent: 5526248 (1996-06-01), Endo
patent: 5636917 (1997-06-01), Furami et al.

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