Juhani says: Oct 26, 2015 at three:28 am The condition is usually that you need to get all the light to 1cm x 1cm area. I've 100W led (8k lm) but I get a lot more light to display from one 1k lm Cree XM-L2. Second difficulty is definitely the narrow wavelength sample of any led. The colour wheel in DLP projector dimms the light even more.Is that th… Read More