A rearview mirror (01) for a vehicle with a partly transparent reflective element (03) for observing the traffic behind has at least one signaling mechanism with light-emitting lighting device (05, 07) provided on the rear side of the reflective element (03). The light of the signaling mechanism is radiated at a specific angle of radiation in a predominant direction (13, 14), so that the lighting strength on the front side of the reflective element (03) depends on the viewing angle relative to the predominant direction (13, 14). An optical convergent lens (11), which collects the light signals of the lighting device (05, 07) and deflects them in the direction of the predominant direction (13, 14), is arranged between the lighting device (05, 07) and the reflective element (03).