Vehicular projection-type headlamp

Details Vehicular projection-type headlamp Vehicular projection-type headlamp

1993-07-20

1994-08-30

Husar, Stephen F.

Illumination

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

Tie rod element controlled

362276, 362284, 362324, B60Q 104

Patent

active

053433718

ABSTRACT:
A projection headlamp for cars has a substantially elliptical reflector 14, a light source 12 located at the first focal point of the reflector 14, a projection lens 16 disposed in front of the reflector 14, and a shade 20 located at a position near to the second focal point of the reflector 14 and the focal point of the projection lens 16, and the shade 20 partially intercepting light beams going from the reflector 14 toward the projection lens 16. The shade 20 is formed of a tubular member having a step 23 for forming preset light beam distribution patterns. The step 23 spirally extends on the circumferential outer surface of the tubular member in the axial direction. The shade 20 is rotatable about the horizontal shaft 24 of the reflector 14. With the rotation of the shade 20, a step position of the distribution pattern horizontally slides.

REFERENCES:
patent: 4875141 (1989-10-01), Miyauchi et al.
patent: 5060120 (1991-10-01), Kobayashi et al.
patent: 5068768 (1991-11-01), Kobayashi
patent: 5138540 (1992-08-01), Kobayashi et al.
patent: 5158352 (1992-10-01), Ikegami et al.

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