Signal light for vehicles, arranges main radiation axis of light source transversely with respect to numerous prisms of disk-like optical element

摘要

A signal light (1) has a light source and a disk-like optical element (4) with numerous prisms on the back surface. The main radiation axis of the light source runs transverse with respect to the prisms, which define the main radiation patterns from the light emitted at an angle from the light source.