Patent ID: 6953271

Claim:
An indicator lamp, for a motor vehicle, comprising: a light source arranged along an optical axis oriented from the rear to the front of the indicator lamp for emitting light rays toward the front, at a solid angle centered on the axis; and an optical device for recovering and distributing the rays of light emitted by the source for providing, toward the front, an indicating function, the optical device having: a coaxial annular reflector; and a light engine in front of the light source for distributing the rays of light emitted by the light source in directions that are generally transverse about the optical axis, toward the coaxial annular reflector that is provided for distributing the rays of light, coming from the light engine, toward the front, generally in a direction parallel to the optical axis, so as to provide the indicating function, said light engine being made of a transparent material having a refractive index greater than that of air, and having: an inlet face which is arranged axially opposite the light source and having a profile, in axial section, such that most of the rays of light emitted by the source penetrate into the light engine; an outlet face which is arranged generally radially opposite at least one axial section of the coaxial annular reflector; at least one front inner reflection face which is provided to deflect at least part of the rays of light that enter the light engine, toward the outlet face, such that the rays of light leave the light engine by way of the outlet face by being refracted, and such that these rays of light strike the coaxial annular reflector at given angles of incidence; and a rear inner reflection face of concave parabolic annular shape, which is focused on the light source and which reflects the rays of light axially toward the front.