LED projector headlamps using single or multi-faceted lenses
First Claim
1. A condenser lens for a projector-type headlamp assembly of a motor vehicle, the projector-type headlamp assembly including a light source emitting light which is projected longitudinally downstream in front of the motor vehicle, the condenser lens comprising:
- a main body of light transmitting material, the main body defining a first surface receiving light from the light source and a second surface emitting the light, the second surface having a generally concave curvature to horizontally and vertically focus the light;
the second surface having a plurality of facets structured to horizontally focus the light differently from the vertical focus of the light to provide a predetermined beam pattern having an increased horizontal beam spread relative to an aspheric condenser lens.
13 Assignments
0 Petitions
Accused Products
Abstract
A condenser lens and a headlamp assembly employing the condenser lens improves control over the beam spread characteristics, while at the same time reduces the package size of the headlamp assembly. The condenser lens is provided for a projector-type headlamp assembly having a light source emitting light which is projected longitudinally downstream in front of a motor vehicle. The condenser lens generally includes a main body of light transmitting material. The main body defines a first surface receiving light from the light source and a second surface emitting the light. The second surface has at least one facet structured to spread the light and provide a predetermined beam pattern.
49 Citations
23 Claims
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1. A condenser lens for a projector-type headlamp assembly of a motor vehicle, the projector-type headlamp assembly including a light source emitting light which is projected longitudinally downstream in front of the motor vehicle, the condenser lens comprising:
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a main body of light transmitting material, the main body defining a first surface receiving light from the light source and a second surface emitting the light, the second surface having a generally concave curvature to horizontally and vertically focus the light; the second surface having a plurality of facets structured to horizontally focus the light differently from the vertical focus of the light to provide a predetermined beam pattern having an increased horizontal beam spread relative to an aspheric condenser lens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A projector-type headlamp assembly of a motor vehicle comprising:
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a light source emitting light; a reflector collecting light from the light source and projecting the light longitudinally downstream; a condenser lens having a main body defining a first surface receiving light from the reflector and a second surface emitting the light, the second surface having a generally concave curvature to horizontally and vertically focus the light and provide a predetermined beam pattern, the second surface having at least one vertically elongated facet having one of a convex and a concave curvature that provides a horizontal beam spread component to the predetermined beam pattern. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification