The OptoFire Searchlight | BEAMSHOTS on page 3 | record-breaking aspheric LED thrower

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Enderman
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Black = reflector flashlight
All are LED lights except the Maxabeam.
X axis = candela (cd)
Y axis = throw (m)

PS – the “LightCanon V2” is this flashlight, which is now named OptoFire Smile

djozz
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I measured my fresnel box at 13 meter, with the spot focused at that distance. When used at 500 meter I had to re-focus quite a bit. But the shape of the hotspot and tint-gradient was the same for 13 meter and 500 meter, I do not expect a different kcd number for measuring at the two distances.

Enderman
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djozz wrote:
I measured my fresnel box at 13 meter, with the spot focused at that distance. When used at 500 meter I had to re-focus quite a bit. But the shape of the hotspot and tint-gradient was the same for 13 meter and 500 meter, I do not expect a different kcd number for measuring at the two distances.

I didn’t expect getting a difference at 5m than 50m, but look what happened Silly
djozz
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Enderman wrote:
djozz wrote:
I measured my fresnel box at 13 meter, with the spot focused at that distance. When used at 500 meter I had to re-focus quite a bit. But the shape of the hotspot and tint-gradient was the same for 13 meter and 500 meter, I do not expect a different kcd number for measuring at the two distances.

I didn’t expect getting a difference at 5m than 50m, but look what happened Silly

Did you re-focus?
Enderman
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djozz wrote:

Did you re-focus?

Yeah, as best I could for both cases.
The_Driver
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Enderman,
You forgot Lumensteins Lux Monster
In the beginning: 2Mcd with 3 XP-G2 at 5A (this value was always too low…)
Then modded again, 1.9Mcd with three XHP-35 HI

Also another light from Xandre: the SR-90-in-kurz-und-heftig (SR-90 in short and extreme). It’s a Vinz mod from 2013 and was the main inspiration for my Project Excalibur. It did 970kcd with a de-domed XP-G2 R5 (measured at 70m!). Pics can be found here.

Kenji modded some lights too
Nitecore TM-36 with XP-G2 S2: 842kcd
Eagletac MX25C2 Turbo wirh XP-G2 S2: 790kcd

Also the Lemax LX70
Normal Version: 1.3Mcd
LX-70 Superpower – 4.5Mcd (is has a much larger reflector)

Lemax LX50 and Polarion PH50: 500kcd

Also the Megaray (3.125Mcd).

I think a new thread would be a good idea for this record list.

Enderman
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The_Driver wrote:
Enderman,
You forgot Lumensteins Lux Monster
In the beginning: 2Mcd with 3 XP-G2 at 5A (this value was always too low…)
Then modded again, 1.9Mcd with three XHP-35 HI

Also another light from Xandre: the SR-90-in-kurz-und-heftig (SR-90 in short and extreme). It’s a Vinz mod from 2013 and was the main inspiration for my Project Excalibur. It did 970kcd with a de-domed XP-G2 R5 (measured at 70m!). Pics can be found here.

Kenji modded some lights too
Nitecore TM-36 with XP-G2 S2: 842kcd
Eagletac MX25C2 Turbo wirh XP-G2 S2: 790kcd

Also the Lemax LX70
Normal Version: 1.3Mcd
LX-70 Superpower – 4.5Mcd (is has a much larger reflector)

Lemax LX50 and Polarion PH50: 500kcd

Also the Megaray (3.125Mcd).

I think a new thread would be a good idea for this record list.

Yeah, I just added the ones I remembered, a separate “record throwers” topic sounds awesome Smile
I’ll do that in a few hours and update the graph with all of those.
Let me know of any others I should add!

djozz
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Nice to make a graph of super-throwers Smile

I suggest to make the graph more interesting by putting on the x-axis the surface area of the largest optical element (lens or reflector) and the throw (kcd) on the y-axis.

MRsDNF
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Amazing build Enderman. I admire your skills immensely. Well done. Thumbs Up
If the only issue you had was with the temp probe I’d have been ecstatic. Smile

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Enderman
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djozz wrote:
Nice to make a graph of super-throwers Smile

I suggest to make the graph more interesting by putting on the x-axis the surface area of the largest optical element (lens or reflector) and the throw (kcd) on the y-axis.


That’s a great idea, I will make a second graph for that for sure Smile

MRsDNF wrote:
Amazing build Enderman. I admire your skills immensely. Well done. Thumbs Up
If the only issue you had was with the temp probe I’d have been ecstatic. Smile

Thank you!
Kinda sucks that the one thing I made difficult to remove was the temp probe, and that’s the only thing having issues… lol
At least it sorta works, every time I want to see the temp I need to set the flashlight to low mode Big Smile
Speed4goal
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Time to contact guiness book of world records?

2/9 Fox Co (2009-2015) Semper Fi 0311/0331 Rifleman/Machine Gunner
Blf has changed a lot since I've been here. Lots of snow flakes and easily offended over nothing. When the forum use to be great and people joked around and could take a joke. It's a forum it's not that serious. Let's make BLF great again!

Enderman
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Speed4goal wrote:
Time to contact guiness book of world records?

I contacted them a while ago asking what kinds of conditions they would require for a “flashlight” but they never got back Sad

The definition isn’t really clear, it just says a “small” portable battery powered light source, and there is no exact definition of small.
Guiness called this ginormous thing a “flashlight” so I guess for them there is no size restriction as long as it doesn’t need to be plugged into a wall and is “portable”.

So basically just buy a giant fresnel lens, stick some wheels on it, and you basically quality as a “flashlight” and win because you have the biggest diameter.
Someone else want the record? just increase the diameter.
That’s no fun IMO. I’m trying to get the best lux per diameter while staying portable, which for me personally is something I can fit in my backpack an carry around.
6” diameter and 500mm long is about max what I can fit while still closing it, or 12” diameter and 6” thick cylinder.

The_Driver
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I have thought about it some more. Enderman’s graph is acutally kind of nice because it shows the performance (ie throw) differences between the lights without evaluating how optimezed they are. It shows that there is indeed still a very large difference between the Maxabeam and most LED lights. I know from personal experience that this is definitely the case.

Enderman
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MORE BEAMSHOTS! Big Smile Big Smile Big Smile
These were taken with my not-so-great point and shoot camera with 100 iso and 4-5 second exposure. Look very similar to what could be seen irl, although with some highlights a bit overexposed like streetlamps and lamps and stuff. Uploaded in high res in case you want to zoom in.


Some simple beamshots pointing into the sky.

Pointed at some dark trees about 500 or 1000m away, can clearly see the branches if you zoom in.

A close boat a few hundred meters awaay.

A far boat, about 500+ meters away.

These ones I think are the most impressive, the beam is actually visible from the side, and cuts through the sky even when there is a lot of ambient light around!




More than 50 people stopped to look at it while passing by, I just pretended to be another random person as I walked down the street taking my pictures like everyone else.
Very little side spill, anyone can easily look at the flashlight continuously without it hurting at all.
Temperature at the probe was below 40C after about half an hour of runtime, so the LED is likely at very safe temps far below 85C.
It is important that the fan is running because one other time the fan cable got caught in the blades and I realized after a while that the light was at 70+ degrees inside the PVC tube!
Thanks for reading.

MRsDNF
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Nice. LOL

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Sledgestone
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Very cool! Thumbs Up

The_Driver
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Nice pics! Wink

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Very awesome! And looks like a lovely place where you live. Beer

Rusty Joe
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Come on…my Uranusfire C8 out throws that!

bhahahahahahaha! Hat

Just kiddin’

Really nice!

That last photo looks like you are peeing light into the sky!

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Enderman those beamshots are SWEEEEET!

Your canon cuts through the night with near laser precision. Thumbs Up Great project.

I’ve heard Vancouver was beautiful but I’ve never had the opportunity to visit. Those pictures certainly seem to support the rumors…beautiful. Beer

Enderman
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Thanks for the compliments guys! Smile

hIKARInoob wrote:
Very awesome! And looks like a lovely place where you live. Beer

J-Dub74 wrote:
Enderman those beamshots are SWEEEEET!
Your canon cuts through the night with near laser precision. Thumbs Up Great project.
I’ve heard Vancouver was beautiful but I’ve never had the opportunity to visit. Those pictures certainly seem to support the rumors…beautiful. Beer

Believe it or not, this is actually not Vancouver Silly I’m on vacation in a part of Spain, also very beautiful.
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Ha! You could light up the USS Star Track when Spock comes to visit! Big Smile

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

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Ha ha Smile You carry that bazooka in Spain Big Smile

Very lovely pics Thumbs Up

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Enderman wrote:
Believe it or not, this is actually not Vancouver Silly I’m on vacation in a part of Spain, also very beautiful.

Oh I get it. Just in case your light creates a rupture in the space time continuum… you’d better do that far away from home. Smart… Silly

Enderman
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luminarium iaculator wrote:
Ha ha Smile You carry that bazooka in Spain Big Smile

Very lovely pics Thumbs Up


Big Smile thanks!
I’m surprised I haven’t been stopped at an airport yet for the bomb-looking flashlights I always take with me xD

hIKARInoob wrote:
Oh I get it. Just in case your light creates a rupture in the space time continuum… you’d better do that far away from home. Smart… Silly
Evil
Enderman
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Some stuff that I realized during this build that is a good learning experience and will be applied to future builds:
- a parabolic reflector will be used in the next build, too many down sides to lenses such as chromatic aberration, imperfect aspheres, clear apertures that are smaller than the lens diameter, etc…

- temperature meter needs to be tested outside the flashlight at all LED brightness levels, and it needs to have better electrical insulation from the heatsink
I will also not glue it down next time Big Smile

- some felt or foam needs to be added between the heatsink and the PVC tube to help it slide easily when focusing

- the LUW Q8WP will theoretically have higher intensity than the Oslon Black Flat LED, when it becomes available

- a larger heatsink or liquid cooling will be used next time inn order to achieve even higher current and intensity. TEC/peltier cooling will also be considered

- a custom hemispherical collar might be used in the next build to increase intensity further by using a smaller aperture, and wasting less light that doesn’t hit the optic

- non-LED light sources will be tested, potentially achieving close to short-arc lamp performance without any bulbs (very early experimental research)

- next build will hopefully have a larger optic to make a thicker – and more visible – beam while also increasing lux. Hopefully between 6 and 12”

- a more powerful fan(s) will be used in the next build, rather than a quiet fan, in order to obtain the best cooling possible regardless of noise

hIKARInoob
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Enderman wrote:
TEC/peltier cooling will also be considered

My Braun shaver uses this principle (to cool skin, to avoid irritation); it’s a bit of a surreal experience. Pretty cool.

CRX
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Enderman wrote:
some felt or foam needs to be added between the heatsink and the PVC tube to help it slide easily when focusing

I use various sticky back felt for stuff like that

http://www.ebay.co.uk/itm/Flannel-Car-Auto-Black-Wiring-Harness-Anti-Rat...
http://www.ebay.co.uk/itm/ANTI-SQUEAK-ANTI-RATTLE-SELF-ADHESIVE-FELT-TAPE-25mm-x-1m/271635986474?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
http://www.ebay.co.uk/itm/Mini-Self-Adhesive-Craft-Felt-Rolls-from-1-95-...

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Nice build!

And nice how-to as well as beamshots.

Enderman
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hIKARInoob wrote:
My Braun shaver uses this principle (to cool skin, to avoid irritation); it’s a bit of a surreal experience. Pretty cool.

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 Big Smile

CRX wrote:
I use various sticky back felt for stuff like that

http://www.ebay.co.uk/itm/Flannel-Car-Auto-Black-Wiring-Harness-Anti-Rat...
http://www.ebay.co.uk/itm/ANTI-SQUEAK-ANTI-RATTLE-SELF-ADHESIVE-FELT-TAPE-25mm-x-1m/271635986474?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
http://www.ebay.co.uk/itm/Mini-Self-Adhesive-Craft-Felt-Rolls-from-1-95-...


Thanks Smile

Dutcheee wrote:
Nice build!

And nice how-to as well as beamshots.


Thank you!
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.

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