Illumination device with a light source comprising several LED chips, a conical reflector and a movable lens

摘要

The device (1) has a reflector (3) encompassing an extended light source (2) and designed in a form of conical frustum with an opening (6) at a wide end of the reflector. The light source is arranged at a tapered end area of the reflector such that the light is emitted towards the opening. A lens (4) is arranged for concentrating the emitted light. The lens is arranged movably along an optical axis (5) of the lighting device within a predetermined movement range such that the focal point of the lens in the emission direction is shifted into an area behind a notional apex (9) of the reflector.