Vehicle headlight

Details Vehicle headlight Vehicle headlight

1999-05-01

2001-05-01

Husar, Stephen (Department: 2875)

Illumination

Supported by vehicle structure

Light modifier

C362S343000

Reexamination Certificate

active

06224245

ABSTRACT:

BACKGROUND OF THE INVENTION
The invention is based on a headlight for vehicles
One such headlight is known from German Patent Disclosure DE 31 39 943 A1. This headlight has a light source and a reflector, and the reflector has a sector which is embodied such that by it, light emitted from the light source is reflected as a beam that converges in horizontal planes and is at least approximately parallel in vertical planes.
To achieve an adequate light yield, the reflector must be embodied with a sufficient size, and at its front edge pointing in the light exit direction, it has a relatively large cross section. However, for the sake of the best possible aerodynamics and for design reasons, vehicle manufacturers also demand headlights with the smallest possible light exit openings. To meet this demand, headlights designed on the projection principle are typically provided, in which a converging is reflected by the reflector, passes along a baffle that generates a light/dark boundary, and passes through a lens. These headlights, however, entail increased production cost, because of the lens and the baffle.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide headlight for vehicles, which avoids the disadvantages of the prior art.
In keeping with these objects, an opaque baffle is disposed in the light exit direction downstream of the reflector and has a light admission opening with a cross-section smaller than the cross-section of the reflector on the front edge pointing in the light admission opening, the beam reflected by the reflector is concentrated at least substantially on the light admission opening of the baffle, and the light admission opening of the baffle is formed as at least approximately circular or oval in cross-section.
The headlight according to the invention has the advantage over the prior art that it has a simple design and can be made with a small light exit opening, yet an adequate light yield can still be attained, since light is reflected by the reflector in such a way that it can pass through the light admission opening of the baffle.
In the dependent claims, advantageous features and refinements of the headlight of the invention are disclosed.


REFERENCES:
patent: 1756084 (1930-04-01), Caughlan
patent: 4959757 (1990-09-01), Nakata
patent: 5003435 (1991-03-01), Nakata

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