Patent ID: 8353612

Claim:
An optical device, in particular for a motor vehicle, such as a lighting or signaling device, said optical device comprising at least one light guide which is designed to guide at least part of the light which is emitted by a source of light, said at least one light guide comprising at least one output surface and at least one main reflection surface, which is designed to reflect towards said at least one output surface light which is propagated in said at least one light guide, said at least one light guide comprising a coupling portion for coupling with said source of light, said coupling portion having a transverse axis (Y), a first reflection facet and a second reflection facet, wherein said coupling portion is arranged such that a second light beam which is emitted from said second reflection facet is propagated in said at least one light guide around said transverse axis having a second reflection facet angle of less than 360°, and said first reflection facet is disposed on a plane generally perpendicular to the said transverse axis and propagates a first light beam; said first reflection facet adapted to direct light from said at least one light source in a first angular opening toward said at least one output surface and without reflection on said at least one main reflective surface; said second reflection facet adapted to direct light from said at least one light source with a second angular opening toward said at least one main reflective surface with a second angular opening which reflects said light toward said at least one output surface; said first and second angular openings having different angular orientations with respect to said transverse axis, with said first angular opening being less than said second facet angle; and said first and second angular openings being angular paths of light measured on a plane generally perpendicular to said transverse axis (Y).