Patent ID: 9188726
Filing Date: 2015-11-17
Classification: F21S,G02B

Abstract:
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.