OPTICAL ELEMENT, LIGHTING DEVICE AND LUMINAIRE

摘要

Disclosed is an optical element (100) for creating a collimated beam from a luminance distribution generated by a light source (200) placed at a defined position at the optical axis (105) of the optical element, the optical element comprising an inner zone (110) centered on said optical axis, the inner zone having a plurality of inner zone regions for generating a first plurality of partially overlapping images of said luminance distribution at a defined distance from the lens, the first plurality of partially overlapping images defining a first superimposed image having a first image width at the defined distance; and an outer zone (130) around said inner zone, the outer zone having a second plurality of outer zone regions for generating a second plurality of partially overlapping images of said luminance distribution at the defined distance, the second plurality of partially overlapping images defining a second superimposed image having an second image width smaller than the first image width at the defined distance, the second superimposed image being superimposed on the first superimposed image at the defined distance. Also disclosed is a lighting device including the optical element and a luminaire including the lighting device.