Multi-function headlamp for a motor vehicle, adapted to improve the illumination of road signs
First Claim
1. A multi-function headlamp for a motor vehicle comprising:
- a reflector;
lamp means constituting a light source and disposed within the reflector, and adapted for emitting visible light and ultra violet radiation simultaneously, the lamp means defining an optical axis;
occulting means associated with the lamp means for defining a cut-off line whereby to produce a dipped beam;
a front closure lens, made of a material which is at least partially transparent to ultra violet radiation and overlying an open front of the reflector, the occulting means being opaque to visible light radiation but at least partially transparent to ultra violet radiation, and the multi-function headlamp further including means mounting the occulting means for displacement of the occulting means between an occulting position in which it intercepts all visible radiation directed above the cut-off line of the beam defined by the occulting means, and a retracted position in which the transmission of visible light radiation is substantially unaffected by the occulting means, wherein the reflector has a height and comprises a first reflecting zone and a second reflecting zone, for generating two respective different light beams, said first and second reflecting zones being disposed side by side and each extending over the whole height of the reflector, with each of said first and second reflecting zones comprising a part of a reflecting surface which of itself generates an associated beam, and wherein the said occulting means comprise at least one screen which, in the said occulting position, is situated laterally of the said lamp means.
1 Assignment
0 Petitions
Accused Products
Abstract
A multi-function headlamp, in particular for a motor vehicle, is arranged to improve the illumination of road signs and other external objects. It includes an occulting means for defining a cut-off line for a beam such as a dipped beam or fog penetrating beam, lamp means of the kind that emits both visible light and ultra violet radiation simultaneously, and a front closure glass of a material which is at least partially transparent to ultra violet radiation. The occulting means is also opaque to visible light radiation and at least partially transparent to ultra violet radiation, and the occulting means is mounted for displacement between an occulting position, in which it intercepts all visible radiation directed above the cut-off line, and a retracted position in which it has substantially no effect on the transmission of visible light radiation.
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Citations
7 Claims
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1. A multi-function headlamp for a motor vehicle comprising:
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a reflector; lamp means constituting a light source and disposed within the reflector, and adapted for emitting visible light and ultra violet radiation simultaneously, the lamp means defining an optical axis; occulting means associated with the lamp means for defining a cut-off line whereby to produce a dipped beam; a front closure lens, made of a material which is at least partially transparent to ultra violet radiation and overlying an open front of the reflector, the occulting means being opaque to visible light radiation but at least partially transparent to ultra violet radiation, and the multi-function headlamp further including means mounting the occulting means for displacement of the occulting means between an occulting position in which it intercepts all visible radiation directed above the cut-off line of the beam defined by the occulting means, and a retracted position in which the transmission of visible light radiation is substantially unaffected by the occulting means, wherein the reflector has a height and comprises a first reflecting zone and a second reflecting zone, for generating two respective different light beams, said first and second reflecting zones being disposed side by side and each extending over the whole height of the reflector, with each of said first and second reflecting zones comprising a part of a reflecting surface which of itself generates an associated beam, and wherein the said occulting means comprise at least one screen which, in the said occulting position, is situated laterally of the said lamp means. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A multi-function headlamp for a motor vehicle comprising:
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a light source for simultaneously emitting visible light and ultraviolet radiation and located within a reflector, said light source defining an optical axis, said reflector having a height, an open front, a first reflecting zone having a surface adapted to generate an associated beam lying below a cut-off line and a second reflecting zone having a surface adapted to generate an associated beam concentrated about said optical axis, said first and said second reflecting zones being disposed side by side and each extending over the whole height of the reflector, a screen for selectively occulting visible light emitted towards said second reflecting zone, said screen being opaque to visible light but at least partly transparent to ultraviolet radiation and associated with said light source for defining said cut-off line to produce a dipped beam, a shield associated with said light source, said shield being opaque to visible light but at least partly transparent to ultraviolet radiation, a front closure lens of a material at least partly transparent to ultraviolet radiation and overlaying said open front, and means for mounting said screen for displacement between an occulting position in which said screen is located laterally of said light source and in which said screen intercepts all visible light directed above said cut-off line and a retracted position in which said visible light is transmitted relatively unaffected by said screen.
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Specification