Stufenlinsenscheinwerfer

摘要

The spotlight has an emerging light beam (4) with an adjustable aperture angle. A diffuser (7) is circularly designed and arranged at center of a fresnel lens (3). The fresnel lens has a real focal point superimposed with a focal point of an ellipsoid reflector (1). The fresnel lens defines a light mixing system that alters proportion of scattered light and light mixing ratio as a function of the adjustable aperture angle. Independent claims are also included for the following: (A) a lighting unit comprising a fresnel spotlight (B) a torch comprising a fresnel spotlight.