LED LIGHTING SYSTEM COMPRISING AN OPTICAL SYSTEM SUITABLE FOR PROVIDING A LIGHT BEAM

An optical system having a light guide (3) and a reflector (6) is described. The light guide transports, during use, light from a first end (30) to a second end (31) of the light guide. The light guide has an entrance surface (2) at the first end for allowing incident light to enter the light guide at an entrance axis (8). The light guide further has a coupling element (5) at the second end for coupling light out of the light guide at a coupling axis (9) for illuminating the reflector. The light guide further has a solid rod-like guiding section (32) for guiding light entered in the light guide from the first end to the coupling element. The rod-like guiding section has one or more bends (33,34). Each light ray of the light guided to the coupling element is reflected in the bend (s) one or more times. The reflector receives light coupled out of the light guide and reflects the received light for providing a directed beam at a beam axis (9).