Lighting device for a motor vehicle

摘要

A lighting device for a motor vehicle, includes a light guide for total-reflective guiding of light along a direction of light propagation. The light originates from at least one light source and can be coupled-in via at least one coupling surface on one end face of the light guide. The light guide further includes a coupling-out surface disposed along the direction of light propagation for coupling out light that exits from the light guide where the total-reflection condition no longer exists at the exit surface disposed along the direction of the light propagation. The lighting device is characterized in that the at least one light source, the light from which can be coupled in on the at least one coupling-in surface, is a laser light source.

主权项

1. A lighting device for a motor vehicle, comprising:
a laser light source; an optical waveguide for total reflective guidance of light along a light propagation direction, the optical waveguide having a coupling-in surface on a face thereof, a coupling-out surface arranged along the light propagation direction and an exit surface arranged along the light propagation direction, wherein light of the laser light source is coupled-in to the optical waveguide via the coupling-in surface; a collimator arranged to convert the light of the laser light source at the coupling-in surface of the optical waveguide to a collimated ray beam, wherein the collimator comprises a curved face of the optical waveguide, on which the light of the laser light source is diffracted or reflected; and the coupling-out surface couples out the light at the exit surface where a total-reflection condition does not exist.