Juhani suggests: Oct 26, 2015 at three:28 am The challenge is you must get every one of the light to 1cm x 1cm spot. I have 100W led (8k lm) but I get more light to monitor from one 1k lm Cree XM-L2. 2nd issue will be the slim wavelength pattern of any led. The colour wheel in DLP projector dimms the light more.Jai un epson powerlite household cin�