Projection-type vehicular headlamp

Details Projection-type vehicular headlamp Projection-type vehicular headlamp

2005-07-05

2005-07-05

Sember, Thomas M. (Department: 2875)

Illumination

Supported by vehicle structure

Projection-type headlamp

C362S517000, C362S297000

Reexamination Certificate

active

06913377

ABSTRACT:
A projection-type headlamp producing a low-beam light distribution pattern having a cut-off line and which provides improved visibility for the driver of the vehicle with a reduced possibility of inflicting glare on drivers of oncoming vehicles. A low-beam light distribution pattern is synthesized from a base light distribution pattern, formed by a projection-type lamp unit, and a pair of additional light distribution patterns, formed by light reflected from a pair of additional reflectors provided on right and left sides of a lamp unit body. The additional light distribution patterns are superimposed on a horizontal cut-off line having a level difference within the base light distribution pattern. The contrast between the area above the horizontal cut-off line and the area below the horizontal cut-off line is accordingly reduced.

REFERENCES:
patent: 3184591 (1965-05-01), Cibie
patent: 4772948 (1988-09-01), Kretschmer et al.
patent: 4772987 (1988-09-01), Kretschmer et al.
patent: 4918580 (1990-04-01), Nino
patent: 4964021 (1990-10-01), Masin
patent: 5055981 (1991-10-01), Nino
patent: 5967647 (1999-10-01), Eichler
patent: 6435703 (2002-08-01), Takada
patent: 6626565 (2003-09-01), Ishida
patent: 40 10 830 (1991-10-01), None

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