Watching the video on NUBM44 by planters it looks like the diode gives a 6mmx4mm beam.
Pretty big but will fit on some scanners.
But then I see up to 30W (!) blue pure diode modules, how on earth does anyone fit that much power and still end up with 6x6mm beam? The modules get larger with power, so it's unlikely just to be more cooling and overdriving of two PBS cubed beams. But with knife edging how do they end up with a beam that can still fit on a scanner mirror?
Two lenses could be used to shrink the beam, but from what I know that would create terrible divergence.
I want to get into building higher power projectors and I just can't get my head around how it's done.
With blue it's not so bad, 12W with 2 diodes and PBS cube, but how can I go higher than 2W for green and around 2W for red without getting too fat beams or extremely divergent beams?