Patent ID: 8434901

Claim:
A light emitting system for outputting a light beam comprising an optical arrangement and an optical device, wherein the optical arrangement comprises: at least one light source for emitting a light beam having a pre-determined width on a projection plane placed at a pre-determined distance from the optical arrangement; a reflector facing the optical device for back-reflecting the light emitting by the at least one light source towards the optical device, the reflector comprising a transversally concave reflective surface extending longitudinally according to a reflector axis; wherein the optical device is movable into a plurality of angular positions, by rotation around a rotation axis, and comprises one or more optical elements arranged for varying the width of the emitted light beam on the projection plane when the optical device is rotated; wherein the optical arrangement comprises an arrangement of at least two light sources which are aligned along a light source axis (X 1 ); and, wherein said arrangement of light sources is movable into a plurality of angular positions by rotation around a second rotation axis corresponding to said rotation axis.