The invention proposes an indicator lamp comprising an optical axis oriented from the rear to the front, on which there is a light source which is provided for emitting a light flux towards the front, and of the type comprising an optical device for recovering and distributing the rays of light emitted by the source, with a view to providing an indicating faction that meets the regulations, wherein the optical device comprises a coaxial annular reflector and, in front of the light source a central optical part known as the light engine which is provided for distributing the rays of light emitted by the source in directions that are generally transverse about the optical axis, towards the coaxial annular reflector that is provided for distributing the rays of light axially towards the front.