Vehicle lighting device
First Claim
Patent Images
1. A rectangular lighting device for use in combination with a vehicle comprising:
- a light source;
a projection lens having an approximate shape of a flat sector of a cylinder with a cut-off apex, a first surface of said lens facing said light source having a uniform curvature and a second surface of said lens located on said lens opposite said first surface being part of a toroid'"'"'s surface, surfaces of said lens above and below said first and second surfaces being plane;
an optical axis being defined between said light source and said lens;
a reflector located proximal said light source and on a side of said light source opposite said lens and having a curved central section and flat sections located above and below said optical axis, said curved central section positioned proximal said light source, said reflector further including two subsections forming a joint edge therebetween, said optical axis intersecting said edge such that said subsections are symmetrically disposed about said axis, each said subsection being curved away from said light source and having a curvature greater than said central section; and
a front lens located adjacent said projection lens opposite said light source.
3 Assignments
0 Petitions
Accused Products
Abstract
The invention is directed to a vehicle headlight including a projection lens secured by a covering disk. No diaphragm is interposed between light source and the projection lens. The lens having the shape of a flat sector of a cylinder with a cut-off apex. An inner lens surface having a uniform curvature and an outer lens surface having a toroidal curvature.
35 Citations
22 Claims
-
1. A rectangular lighting device for use in combination with a vehicle comprising:
-
a light source; a projection lens having an approximate shape of a flat sector of a cylinder with a cut-off apex, a first surface of said lens facing said light source having a uniform curvature and a second surface of said lens located on said lens opposite said first surface being part of a toroid'"'"'s surface, surfaces of said lens above and below said first and second surfaces being plane; an optical axis being defined between said light source and said lens; a reflector located proximal said light source and on a side of said light source opposite said lens and having a curved central section and flat sections located above and below said optical axis, said curved central section positioned proximal said light source, said reflector further including two subsections forming a joint edge therebetween, said optical axis intersecting said edge such that said subsections are symmetrically disposed about said axis, each said subsection being curved away from said light source and having a curvature greater than said central section; and a front lens located adjacent said projection lens opposite said light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
- 10. A lighting device for use in combination with a vehicle comprising a ray guiding system having a projection lens mounted independently of a light source without the interposition of a diaphragm between said light source and said projection lens, said projection lens having an approximate shape of a flat sector of a cylinder with a cut-off apex, a first surface of said projection lens located on a side of said projection lens opposite said light source having section-wise different surface curvatures.
- 16. A lighting device for use on a vehicle comprising a ray guiding system having a projection lens being mounted independently of a light source without a diaphragm being interposed between said lens and said light source, said projection lens including a first surface having section-wise different surface curvatures, and upper and lower horizontal planar surfaces for reflecting light from said surfaces into a beam.
Specification