Interesting, but how wasteful is it, if it's putting say 90% of the light into that spot pretty much what ever size you want then I'm interested for helmet useage, although fixed and pre setup to suite not heavy magnets.
It's a nice idea but I would never need to change the beam pattern once I set it how I like it.
I especially would not want something that huge on my bike. Or something that could move and change as the bike goes through it's violent off road dance routine.
You can focus the beam of a P7 by shimming the distance the P7 lense protrudes into the reflector. (If you use a reflector that is)
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