Yeah, it used to be pretty popular like a decade ago for PC cooling, but CPUs output too much heat for it to make any difference.
For a sub-30W LED it will probably work great, maybe like sub-0 degrees
I always try to document the whole process for other people who want to learn or build the same, since that’s how I learnt to start building flashlights from old BLF/CPF threads.
*WOW!!!* Very impressive. You engineered that build like a professional scientist. Man you did very well. You should be working for a big flashlight or led manufacturers. By the way, if that is your home you took the picture from, you have a lovely home. Where is it that you live? Very nice place. I'm very impressed with everything you did here. As we say in the US Navy submarine service " Bravo Zulu"!! :THUMBS-UP:
Thanks I don’t think most normal flashlight manufacturers are interested in extreme stuff like this, but maybe for military or search and rescue applications
Maybe that’s what I might do as a job when I finish university, who knows.
Also, unfortunately that isn’t my home, just a place in Spain I’m on vacation at. It is very nice.
I do my best to not shine my lights at buildings or people or else I will get in trouble fast that way.
The other day when I went out for another night test there was a police officer watching me for a while, but he never came to say anything to me.
I guess he saw I wasn’t pointing it at people, just the sky and ocean, so it was fine.
So that the PVC tube doesn’t get lit up from the inside?
Yeah I could, but that would prevent me from sliding the LED assembly up and down the tube for focusing.
There are also the holes on the bottom side of the front for air exhaust, which I can’t cover up.
I didn’t really feel it was a problem, so I just left it as is.
This is the stray light that passes through the wavien collar without getting reflected back to the LED.
If it was light coming directly from the LED it would be much brighter.
I did line the inside of the head section with blackout paper, since some LED light does hit there directly with this longer focal length lens.
In a reflector-based light, the hotspot comes from the light which goes sideways into the reflector, and the spill comes from the part which goes forward directly out the lens. This is exactly backward from how an aspheric thrower works, so they don’t really combine well.
As far as I do understand, ToyKeeper, the reflector hotspot is a combination of the sideways carefully bounced at the right angle emitter output and the corresponding narrow central angle emission (the longer the throw the narrower this part is, doesn't it?). However I can see how increasingly difficult to manufacture, costful and shape emitter optimized a reflector is to be for maximum performance.
I'm no expert in optics, Enderman may shed some additional light for sure (like how big and how far the lens would be required to sit). The question is: What'$ th€ nam€ of all of that g€ar and $tuff?