BLF recoil über-thrower

Another benefit of large reflectors is that imperfections/aberrations have less effect on the beam ;)

Like, look how ugly this is, yet it still throws several kilometres xD

Meanwhile it got dark outside, so i can do some beamshots.
I placed a ‘screen’ in the garden, will be projecting out the window. :slight_smile:

Nice setup!

Oh, I am SO looking forward to this! :wink:

Well, i’m eating now, i tried some stuff, and well, it works, but…

Beamshots will follow later…

I have to admit, I didn’t think this idea would be taken to this level. Great to see people really putting the effort into something new!

Okay, some beamshots then:

And compared with Jacob A6:

I should have used a tripod…

So with the same power it seems to throw more light in the right direction than an A60.
This was only 10 meters distance to the screen, so i’m still not sure what it will do over longer distances.

Quite a bunch of anomalies around the hotspot, which seem to come from the outer perimeter of the recoil reflector.
Will do some more pics later to investigate further.

What bin XR-E and XP-E are you using? I’m wondering how much of the difference is from the emitters themselves. Or, possibly, the difference in emitters could be working the other way, depending on bin, so the difference from the reflector set-up might even be more than shows in the pics!

I have no idea what bin those LEDs are.
The XP-E is from a SingFire 348, so probably nothing special, The XR-E is how i bought the Jacob.
I was assuming it would be similar enough.

Sweet.

What's the diameter of the spot?

Is this focused to a point or focused to infinity (collimated)?

Dang, camera battery empty…
I’m trying approx. 20 meters now, but either way, this thing does a nice job throwing in the good direction, but a better reflector would have been considerably better, i think…

The spot @ 10 meters is approximately 50 cm in diameter.
This is a compromise between collimation and focussing, it’s “the best it can do” so to speak.

That is a 1 degree half angle beam divergence, very good for a toy reflector! :)

Do you have a luxmeter to measure?

Hmm, when you put it like that, i guess it’s not too bad. :slight_smile:

No i don’t have a lux meter (yet)
I thought i’d compare it with a known light: the Jacob A60.
The recoil setup seems to outthrow the Jacob hands down, which is not bad either.

By the way, the XP-E is soldered on a 1.8 mm diameter copper wire, and it seems to be enough for about 1 watt.
Cools better than i expected.

Hmm that's alright I guess. Maybe look into buying one in the future if you're into flashlights a lot, I got one for $50 a while ago and it has been extremely useful.

For myself, I also contacted a company that makes real reflectors, and it's like $700-1000 for a nice 16 or 20" reflector xD a bit pricey!

Jerommel, maybe I missed it somewhere, what is the diameter of that reflector you tested? Looks pretty big.

Having a 445nm blue laser,I use these protecting goggles,which are red. http://www.banggood.com/405nm-445nm-532nm-Anti-Blue-Viole-Light-Laser-Goggles-With-Bag-p-69211.html?rmmds=search.

The green glasses reduce the power to about laserpointer power so I can still see the beam. I will still be careful with the glasses on.

About 14 cm / 5½ inch parabole.