Patent ID: 7461960
Filing Date: 2008-12-09
Classification: F21L,F21V,F21Y

Abstract:
1. An LED illumination module provided with a light-emitting diode as well as with a rotationally symmetrical, one-piece, light-transparent adapter lens with an inner converging lens part and an outer reflector part wherein a rearwardly open blind hole is defined by a frustoconical or conical side surface with an arcuate shape and by a convex base surface and has an inner diameter allowing for longitudinal movement of the LED body along the optical axis of the adapter lens within the hole, wherein the converging lens part is formed by the convex base surface as a light incidence region and by a front light output surface that is also convex, and wherein the reflector part is essentially formed by the side surface of the hole as another light incidence region, by an outer annular surface that reflects all light inward and a front, frustoconical, light output surface, wherein all the light incidence regions and output surfaces refract the light rays with diagonal incidence angle such that the light emitted by the LED is more than 85% emitted to the front and that, by movement of the LED along the longitudinal axis, a light cone modification of a light cone with a cone angle of ≦12° up to a cone angle of ≧20° can be generated and wherein in at least one position of the LED relative to the hole of the adapter lens an inner section of the light cone over a cross section surface perpendicular to the optical axis is homogeneously illuminated.