Let's make a real BLF flashlight, calling up the brainstorm

On the “BLF dying?” thread came the idea of making a new real BLF light.
Now, that’s why I’ve started this topic to brainstorm on this, with a few questions and my opinions, feel free to add more:

  1. Size? 21700 18650…
    for me 21700, more versatile, with shorty tube option.
  2. LED?
    No idea, but definitely CRI>95. A quality light, not just lumen-numbers
  3. How can we get rid of that nasty thermal problems, heat buildup?
    new materials. I’f prefer BeCu with maaaaany fins. Strictly It’s the technical and thermal properties that count, not bragging with Ti or SS or brass… design follows needs, not marketing.
    heat pipe! heat transfering salt/saturated saline! saturated silica gel?
  4. A real state-of-art driver?
    Yeah, it is definitely time to design a good boost driver with high efficiency and good safety. There are new chips on the market, we use them!
  5. features?
    feedback detection in case a light shines into a nearby surface risking to set it on fire, to be part of the driver. a LED is also a detector, did you know? and the sensitivity is separated enough from the emission of the phosphor.
    USB-C, PD

Before you spend much work on the design you should probably contact one of the manufacturers to see if they’re interested in making the light. No sense doing a lot of work if there’s no interest from them in producing it. They’re obviously in business to make a profit so they have to see enough profit in it to get involved.

Don’t underestimate the amount of time it’s going to take from both the manufacturer and BLF team to get something into production. Whatever estimate you have in mind you should probably double or triple it :laughing:

nay, exactly not that way.

First brainstrom of what could be possible, what’s needed, what’s wanted.
I hope for a lively discussion, not just a knockout.
Everything is possible. There are many highly qualified people in the forum and together we could make a light that can even be totally DIY, with members producing and exchanging parts.
And if a professional manufacturer wants to make the light, they can do so, if they acquire a license. It’s not like BLF members have to beg manufacturers to have the light produced, manufacturers shall ask for the license and pay with free sampley, for example.

With so many decent budget flashlights now available from the likes of Convoy/Sofirn/Wurkkos/Hank, any new BLF light would have to fill in a significant gap in the market.
Also, any proximity/feedback sensors need to be able to be disabled indefinitely, as they can interfere with some use cases. Also you might need to check patents on that.

Can someone just make some 5mm, warm tint, high CRI LEDs which ship to the UK PLEASE :stuck_out_tongue: .

Personally, I’d be interested in utilitarian lights, the high end stuff is all a bit “meh” for me nowadays (eg. The lumen output war).

I see sofirn have a 5mm coin cell light with high CRI, something small, cheap, warmish CCT AND keychain sized would be right up my street…. Say, do those photon Freedom guys do a warm white version yet?

The Sofirn C01 seemed quite popular, it’s a shame it’s discontinued.

Else, a nice, small, (single AA/14500?) headlamp with tint ramping 1800k to 4500K.

I’m in for a small or mid-sized aspheric push-pull zoomie. :wink:

LED as sensor is not patentable, as it is state of the art. Basic physics, if you like to call it that way. Otherwise I would instantly patent the resistor. Or the letter “e”.

The gap is already filled with lumen-LIES! Thousands for 10 seconds. WHat about a photo flash? Kilowatt of lighting power! (ok, just for fractions of seconds, but who cares…)

A light with proper thermal managemt and a sustained output of 2000 lumen could blow them all away. I think it is absolutely possible in EDC-able size.

Hmm. Nice idea, but how would you manage the heat from the emitter with a movable lens barrel? or anyway, how to make that without the classical barrel? Heat pipe and use the tube as dissipator?
What about a real zoom optics, not a one-lens?

I don’t agree with that entirely. There may well be a million lights out there, but given the heritage of past ‘proper’ BLF built/designed lights I’m not so sure it has to fill a gap in the market, so much as be different from the rest visually, a bit more ambitious than a black tube which it lets face it what most lights look like , yes there are superficial knurling/milling differences etc but basically they are a black tube.
I’d like to see something a bit ‘out of the box’ maybe being made from hex or octo bar stock for example. Maybe it’s time to put as much effort into the exterior design, rather than it just being just another flashlight?
Some of the most desirable expensive lights are that expensive because of what they look like on the exterior whilst inside they are much the same as a $30 one.
Whilst machining costs, if it were on a smaller light that could be doable.
My favourite light by a country mile is the copper tk16, it was cheap but to me at least it looks the nuts and it’s copper.
This isn’t mine, but I’d like to see a new ‘blf special’ something like it

Haha go big. This will handle 110w 24/7 I have run it for a few days on a laptop supply.

21700, high cri 1500-2000 sustained lumens, single piece body for heat transfer. Something between the sizes of the M21a &M21b.

Super small angel eyes kind of light .something like the wuben G2 done right . Nice tint hi cri usbC .. doesn’t need to do more than a couple hundred lumens . MUST say BLF on it :)

Dying my ass

3S 21700 cells, boost driver for GT-FC40.

Basically a M21G on steroids… more heat sinking to maintain 1500-2000 lumens.

Sturdy shaft and tailcap for… aggressive negotiations.

Ok, I have a light everyone can love that will show that a place like BLF can see a need and fill it, as well be instrumental in perfecting something simple and old as time like the flashlight.

Soooo…I fell pretty damn hard for mules after thinking they were an absurd concoction of flashlight enthusiasts with too much money burning a hole in their pocket. Sorry about that McGizmo, I now see the error of my ways. I’m now of the mind that the best light one can still cary to see ones surroundings best, is a mule, And honestly, it’s not even close. Having a light with any kind of projection is so inefficient for normal use to see 10-20 feet around you. A mule DESTROYS those lights at close range. But we all know that that overwhelming victory mules easily claim at close range, comes at the expense of any potential outward punch. So has this actually been addressed yet? Thats rhetorical, obviously it has not. At least not at a true consumer level anyway.

Let me further my initial point about mules physical light-emitted efficiency being far superior for the “close surroundings” use-case. When I use my linear driver mules and they regulate to whatever base output they go down to, it’s still a significant amount of useful light. A big part of it is the way our eyes are able to adjust to mules. It’s essentially identical to the way camera sensors can easily adjust and use any minimal ambient light, and still produce a great photo. With mules, our eyes can adjust to minimal but even light, and still give us a great field of view. With an optic light, your eyes have to pick the brightest point to focus on, camera’s do to, and what ends up happening is that everything outside your beam goes dark to your eyes. At close range this is no different, except arguably worse. You can only see a few square feet of your panorama at a time due to the way your eyes have to adjust to your flashlights hotspot.

Let me clean up my point real quick,

In the same way that a camera sensor can take a great picture with minimal light, mules work the exact same way for our eyes. This is why I insist that mules are technically our best sources of light. Now the extensive drawbacks of mules is where we can assist the community and continue to lead it forward.

No light maker is making this light currently. I’m not talking about a mule/thrower, just a mule “thrower”, but with a barely thrower emitter and TIR so that it blends with the mule nicely, or as close to evenly as possible. I THINK…TIR would blend better, but I could be wrong. As far as emitters, I think ideally it would be something like 519A on a VERY thin and raised outer channel. Then inside it would be something like an XHP/FC-40 or again a 519A for the bit of punch. I prefer to have the whole beam even and all high CRI, so I prefer the 519A, but if we can use a 4-die that is high CRI and throws a pinch with banging lumens that gets close-enough, then XHP or FC-40 is fine.

I would probably have trouble putting this light down. And you could say, well you can just ask Hank to make a mule out of his DM12.1, but that outer channel is already too wide because it was conceptualized with optics being installed. We don’t need to do that at all, it just needs to have enough space to sit and be wired. how thick does that have to be? And we can get a smaller TIR than the main one going around right now since we done want the best throw per se, just something that punches, but still skews to flood. So I don’t think it has to be a huge light at all. This I imagine would be feasible for something a hair smaller than what the Fireflies E12R/E12C head is.

Right now I hear the retort that companies are already producing all the bomb lights we want to build because they had the benefit of being heavily influenced by a place like this. So lets do that again. Why can’t all light makers feel like they have to start adding 4-8 tiny surface mule emitters around bezel? Anyway, I would so use this and this would not really reinvent a flashlight, it would just combine the best parts or various very useful types of flashlights. I’d say when you want to make a flood/thrower, everything has to get really big for it to get useful or “worth it”. Because you want it to throw, so you get as big a TIR as you can find, and you want a decent flood, so you HAVE to fit some optics, this balloons very quickly. The light I’m suggesting can play against those issues, we don”t want it to throw a mile, we want it to floody/throw & mule. Thats has potential to be way smaller.

And by chance, can we Double Buck? Can dual buck-drivers be installed by chance? Is that a thing?

Anyway, dumb or not, this my contribution to this undying continuous beacon of light that is BLF.

…real BLF light ? What about Hanks lights? Anduril, boost drivers, hi-cri leds, many form factor and beam pattern…. Is it not enough BLF? :laughing:

No, we want a BILF!

I’ve been here for quite a while and participated and bought many a BLF light. Although less in recent years.

Looking at your list above, I think the “budget” part of the forum spirit is probably missing. Not saying you couldn’t come up with something awesome. But I can’t see it being very wallet friendly.

BLF hasn’t or wasn’t about pushing technical boundaries. More about maximising what could be done with what was available at the time.

A button light as mentioned above or maybe some other kind of keychain light might be a more realistic preposition and more in the spirit of BLF mantra.

I suspect anything 18650/21700 will be hard to either be unique enough or affordable enough. So many makers having stepped up the game in the budget and premium arena.

Something BLF probably needs to be a little less mainstream. Like a super slim, lightweight 16500 light. That could out perform a 14500 with better runtimes, but not be as bulky as an 18500 light. Or maybe something like a 2AA or 3AAA light. I don’t think the forum has done a non Li-ion light before.

Something like the IF25 form factor as a sketch.
Quad mule with additional fifth LED in center with TIR, head a bit larger than the tube with many cooling fins made of BeCu for stability and elasticity, wide tailcap for better stand and the slender-waist-grip.
Tailcap more triangular shape, so the light doesn’t roll so easily.
Yes, if the head just houses one small and reasonably flat fresnel TIR in the center and a ring of mule LEDs around it, behind an AR lens, and a reasonably compact driver/charger, then much of the head volume can be just real cooling fins.”
Something like this can take up 75 Watts.“:https://www.akasa.co.uk/update.php?tpl=product/cpu.product.tpl&no=181&type=CPU%20coolers&type_sub=Low%20Profile&model=AK-CC7111
So cooling fins are important.

Now that's a budget I'd like to...

Hank = 95% BLF . Looks like some new users dont understand it.;))