Illumination to weight map

Hi
is there a way to read out the illumination by a light on an object and transfer it to a Weight Map?
I tried to read the UVW Data of the PMatterWave Node which essentially does that. But i only get the Random Positions of the Particles.
I tried a basic Setup with The Raycollider Node but it is restricted to only one light and gets complex when i want the same Radius as the Light Cone. 
Thanks in Advance