Hey Xwingband,
I checked out those pages. Thanks for linking them. I don't however see optics meant for several luxeon LED's at once. What I see is optics that seem to be intended for a single luxeon LED. You could alway grind down the base of the optic so 2-3 could be squeezed in there... but then the alignment of the optic is off. I'm sure they were designed such that the light source is in the MIDDLE of the optic. Move it off to one side and the emission angle will be different.
At least, I believe that to be the case.
So what you really need is an optic that was designed from the ground up to be intended for multiple LED's.
About the reflective optic, that's a cool find. I actually did a similar thing on my saber in the pictures above. I used the poor-mans method though, I glued aluminum foil around the outside of my 5 degree optic lense. It actually worked pretty well. I got more light out the top of the optic instead of bleeding out the sides. You can kinda tell in the image above looking down into the saber. But maybe I will disassemble the saber soon to give a better angle on my tri-lux prototype optic.
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