Juhani states: Oct 26, 2015 at three:28 am The problem is the fact you have to get every one of the light to 1cm x 1cm place. I have 100W led (8k lm) but I get far more light to display from single 1k lm Cree XM-L2. Next challenge could be the slim wavelength pattern of any led. The colour wheel in DLP projector dimms the light even more.With Nativ