Automobile headlamp with small height and high flux recovery
First Claim
1. A headlamp for an automobile vehicle, of the kind comprising a light source, a reflector defining an optical axis, and a closing glass, wherein the reflector comprises a base part substantially in the form of a paraboloid of revolution focussed on the light source, and side pieces in the form of parabolic cylinders having a vertical generatrix, and said headlamp further comprises a deflecting means extending near the source substantially over the full height of the headlamp and adapted to deflect the direction of the light rays coming from the source in order to re-emit them in an essentially horizontal direction towards the said side pieces of the reflector, which in turn reflect them in a direction essentially parallel to the optical axis to participate in the formation of the beam.
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Accused Products
Abstract
A headlamp for an automobile vehicle comprises a luminous filament, a reflector, and a closing glass. According to the invention, the reflector comprises a parabolic base part and side pieces in the form of parabolic cylinders focussed on the filament, and in addition there are deflecting means, for example toroidal lenses, which re-direct the inclined rays of light received from the filament into the horizontal direction, towards the side pieces. A greater proportion of the luminous flux is thus recovered, which enables production of lamps with a small height and with a high efficiency.
17 Citations
11 Claims
- 1. A headlamp for an automobile vehicle, of the kind comprising a light source, a reflector defining an optical axis, and a closing glass, wherein the reflector comprises a base part substantially in the form of a paraboloid of revolution focussed on the light source, and side pieces in the form of parabolic cylinders having a vertical generatrix, and said headlamp further comprises a deflecting means extending near the source substantially over the full height of the headlamp and adapted to deflect the direction of the light rays coming from the source in order to re-emit them in an essentially horizontal direction towards the said side pieces of the reflector, which in turn reflect them in a direction essentially parallel to the optical axis to participate in the formation of the beam.
Specification