To attain uniform illumination in the neighborhood ahead of a vehicle as well as obtain a clear-enough termination of lighting.

A reflector 10 is so formed that, in a zone 30 contacting or extending over a horizontal plane 32 including the light axis of the reflector 10, a plurality of images formed of a light-emitting body having each highest point contacting an upper penumbra are reflected only by cross sections 34, 38 toward a radius direction involving the light axis as well as situated at the lowest position in the zone 30, and a plurality of images formed of a light- emitting body having each lowest point arrayed along a line at least extending toward almost horizontal direction are reflected by cross section 36, 40 toward the radius direction involving the light axis as well as situated at the highest position in the zone 30.