Headlight module for motor vehicle, reflector for such a module, and headlight equipped with this module
First Claim
1. A headlight module for a motor vehicle, comprising a light source having a planar surface, said light source immersed in a volume of transparent material having a refractive index greater than 1, and a reflector comprising a focus situated at a point of the light source separate from a center of the light source, whereinat least a portion of the transparent material is between the light source and the reflector,the light rays emitted by the light source are diverted upon exiting the transparent material, andthe reflector is constructed to reflect and transform the diverted light rays emitted by the light source at the focus into reflected light rays having a cylindrical wave surface and forming a horizontal cut-off.
1 Assignment
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Accused Products
Abstract
In a headlight module for a motor vehicle, a light source having a planar surface, is immersed in a volume of transparent material, which has a refractive index greater than 1. A reflector having a focus is disposed relative to the light source so that the focus of the reflector is at a point of the light source. Accordingly, light rays emitted by light source are refracted by the transparent volume and reflected by the reflector so that such light rays become parallel to a predetermined direction.
9 Citations
9 Claims
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1. A headlight module for a motor vehicle, comprising a light source having a planar surface, said light source immersed in a volume of transparent material having a refractive index greater than 1, and a reflector comprising a focus situated at a point of the light source separate from a center of the light source, wherein
at least a portion of the transparent material is between the light source and the reflector, the light rays emitted by the light source are diverted upon exiting the transparent material, and the reflector is constructed to reflect and transform the diverted light rays emitted by the light source at the focus into reflected light rays having a cylindrical wave surface and forming a horizontal cut-off.
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4. A motor vehicle headlight module method for checking the properties of a reflector of the headlight module having a light source immersed in a hemispherical volume of transparent material having a refractive index greater than 1, and a reflector having a focus, a point of the light source being situated at the focus of the reflector away from a center of the hemispherical volume, the headlight method comprising:
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installing a frosted point on a planar base of the hemispherical volume, illuminating the frosted point with a laser beam, obtaining a beam to infinity formed by the reflector; and observing a segment of the beam to infinity. - View Dependent Claims (5, 6, 7, 8)
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9. A headlight module for a motor vehicle, comprising a light source having a planar surface, said light source immersed in a volume of transparent material having a refractive index greater than 1, and a reflector comprising a focus situated at a point of the light source separate from a center of the light source, wherein
at least a portion of the transparent material is between the light source and the reflector, the light rays emitted by the light source are diverted upon exiting the transparent material, and the reflector is constructed to reflect and transform the diverted light rays emitted from a point on the planar surface of the light source into reflected light rays having a cylindrical wave surface and forming a cut-off.
Specification