What about designing a flashlight that is thermally stable at its highest setting while having incredible run times at its lower modes. Add multiple smaller cells for higher voltage and longer run times. Thicken the cell tube walls, machine out the reflector sleeve in the head leaving the extra aluminum behind for heat sinking. Add 1/2’’ thick copper emitter boards. Build a tank of a light that you could drop from a helicopter on to boulders and still be able to function. Start at 4000 lumens and see what it takes to thermally stabilize that output for 1 hour straight. I’d pay double for a flashlight like that. Weight should not be a factor, look at the BLF GT, its a monster. Just a thought. Sorry if I don’t post this in the right place.
Note that with Andruil you can limit your max output, so it is thermally stable. In some ways it is better in this regard than what you propose because exactly the same light can be capped for those who prefer stable output and maxed out for those who prefer to take it to the edge of capabilities even if only for a moment.
The drawback though is that the users who want stability need to manually figure out the desired maximum and this is somewhat fiddly.
And also a light designed for smaller output could be a bit more efficient. Not that you would notice but every bit efficiency is good, no?
Note: personally I prefer to have a wide range of outputs. Just like what most BLF lights deliver in their default configuration. But the request to produce lights with limited output is a recurring theme. Andruil is a big step in that direction. Maybe it would be possible to cater to your needs even better?…
I’m looking forward to seeing Drone area lighting.
Just waiting to see the introduction of active cooling, as in Peltier junctions and fans. And heat pipes, yeah, that’s what we need.
You can’t win the Lumen Wars unless your flashlight sounds like a jet turbine!