Double lens flashlight with XM-L and big head at kaidomain

do you mean the phlatlight? very different animal, besides them both having two lenses...

I did some fiddling around with the lenses - stock config, each one by itself, each in front of different emitters, etc.. Basically, with just one lens the beam is focused but still does this (imagine the D is the lens)

D<

with both lenses it is more like this (although not as concentrated as an = implies)

D<D=

disclaimer - don't buy this trustfire thinking it will have a similar beam! i have no idea what it looks like, but I'm guessing they had a similar intent...