Light source

A method of manufacturing a light source comprising a plurality of LED light sources arranged in a 2-dimensional array, each of the plurality of LED light sources having:

• a semiconductor diode structure adapted to generate light;
• and a light output section above the semiconductor diode structure adapted to output light from the semiconductor diode structure, the method comprising the step of:
• providing at least one of the plurality of LED light sources with a light reflecting structure at least partially enclosing side surfaces of the semiconductor diode structure and adapted to reflect light from the semiconductor diode structure towards the light output section;
• providing an aperture in the light reflecting structure of at least one of the plurality of the LED light sources, the aperture being formed over the light output section of the semiconductor diode structure,
• providing an optically transmissive structure overlapping the light output sections of the plurality of LED light sources so as to receive light from the light output sections of the plurality of LED light sources, the optically transmissive structure having a light exit section adapted to output the received light,
• wherein the area of the light exit section of the optically transmissive structure is less than the footprint area of the plurality of LED light sources.
• wherein the area of the light output section being less than the area of the semiconductor diode structure,
• wherein the optically transmissive structure comprises one or more optical collimators, and
• wherein the collimator covers a part of the light output section of the semiconductor diode structure over which part the aperture is formed.