World's Brightest Flashlight by The Hacksmith Industries

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-X3-
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World's Brightest Flashlight by The Hacksmith Industries

Guys, it’s been a while since I’ve posted here but I thought of you immediately after seing this video :

300 XHP70 ? meh

"-X3-, is there any place in your house without a flashlight ?" 

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Edited by: -X3- on 12/03/2020 - 17:15
djozz
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Nice to see you posting something again, fun video! And pity that they did not even do a half-serious attempt to measure the output.

Edit: in the picture above it says 1.414.000 lumen, sounds plausible but in the video it is not explained how it is measured. If it is just multiplied from the Imalent output by the number of leds, it must be a bit less because their light extraction will not be as good as the Imalent.

yipbop
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hahaha that’s great!

Robin Dobbie
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djozz wrote:
Nice to see you posting something again, fun video! And pity that they did not even do a half-serious attempt to measure the output.

Edit: in the picture above it says 1.414.000 lumen, sounds plausible but in the video it is not explained how it is measured. If it is just multiplied from the Imalent output by the number of leds, it must be a bit less because their light extraction will not be as good as the Imalent.

50 boards of 6 XHP70 (4000k 80CRI M4 bin), each board paired with a 150W boost converter. Lets’s say in theory they were using them at 150W, so that’s 25W per emitter. According to TA’s test, the emitters are good for 147lm/w(3730lm per emmitter) So that’s 1.1 mega lm. They’re claiming 1.4 so we have to assume they were using a tad more power.

Their number they came up with is definitely before all the shitty 44mm ashpherics and fresnel.

I guess if they’d have used cobs which would have been a lot less expensive, they wouldnt’ have been able to tie in that pcb software sponsor.

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Anyway Imalent is clever with their advertisement, it’s the second video that I see with the MS18 subtly place as the “most powerful flashlight you can buy”

"-X3-, is there any place in your house without a flashlight ?" 

My Flashlight public album (mods, emitter swaps, eye candy)

My reviews channel (French language, Olight, Thorfire, Sofirn, Lumintop : 60+ lights tested)

My personal channel (including Olight SR mini, S1, S2, S1A and S-mini disassembly)

M4DM4X blog, saves you $$$ 

welight
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They could have used our 500 watt engine with built in temp sensing to get more than 7 seconds

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Robin Dobbie
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That doesn’t look like the MS18 board, but are there any commercial products that is inside of that we can see? Is that meant to work with little reflectors?

But yeah, probably didn’t do a pre-made board so they could do their software sponsor.

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we didnt design the mS18 board, ours is a 150M + dive light module

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Damn, you bet me. I re-posted without noticing this thread

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A drone shot would’ve been nice. Can’t really tell how bright it is in the video.

nobody
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That was an awesome video. Thanks for posting!

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I enjoyed the heck out of that!

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I have a hunch that the part of the video where the radiometer gets melted was faked. In terms of “photon density” (aka lumens per square meter aka lux) the Hacksmith light and the MS18 are nearly identical. This is the quantity that determines how much heat a beam of light produces.

Guessing the bezel diameter at 57 cm and taking their 1.4M lumen number at face value that is 5.5 million lux. This is probably an overestimate because the lumen number is suspect.

The MS18 is 15cm and 100k lumens. That is 5.6 million lux. Close enough to the same.

Note these are 55x more powerful than the sun! Stuff can catch on fire at those levels. Though it shouldn’t be enough to melt glass.

Someone could test this for themselves with a mule XHP70.2 and a glass microscope cover slip.

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sgt253
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Wow…

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Parametrek wrote:
I have a hunch that the part of the video where the radiometer gets melted was faked. In terms of “photon density” (aka lumens per square meter aka lux) the Hacksmith light and the MS18 are nearly identical. This is the quantity that determines how much heat a beam of light produces.

Guessing the bezel diameter at 57 cm and taking their 1.4M lumen number at face value that is 5.5 million lux. This is probably an overestimate because the lumen number is suspect.

The MS18 is 15cm and 100k lumens. That is 5.6 million lux. Close enough to the same.

Note these are 55x more powerful than the sun! Stuff can catch on fire at those levels. Though it shouldn’t be enough to melt glass.

Someone could test this for themselves with a mule XHP70.2 and a glass microscope cover slip.

I’m not sure that’s quite accurate.

LUX is a measure of throw. At a distance you are correct. But when measured inches from the bezel you might not be. The cone of light from each emitter in a mule configuration is quite wide. Put 300 of them together and then stand the target close enough to get light from a large portion of them, I think it could be hotter than an MS18, despite similar lux at distance.

Another example: A Noctigon KR4 with 4 emitters is much lower lux than a Noctigon KR1 with 1 emitter. But if you put a burnable object right in front of the bezel of each light and turn them on the KR4 will burn things much faster. This is because there is much more light coming out of the bezel in the quad. Lux doesn’t matter since the light has not traveled far enough to diverge into a flood pattern.

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I somehow missed the melting glass my first watch. Facepalm

If there was high enough lux to melt glass, wouldn’t other things at least be getting scorched? Like the wood counter that’s well above the bezel line on the bottom of the beam? Or the dark base it’s sitting on? Or the plastic fresnel which would have to have a far lower melting point than the glass?

The bubble looks localized, the size which could suggest a jet from a torch? Also notice the camera is panned quite to the right, there are no other angles of the melting, but seemingly plenty of angles for everything else.

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Firelight2 wrote:
LUX is a measure of throw.

No. That is candela.

Quote:
At a distance you are correct.

My math is correct at a single distance. In this case the distance is 0 inches.

Quote:
Another example: A Noctigon KR4 with 4 emitters is much lower lux than a Noctigon KR1 with 1 emitter.

No. You are thinking of candela. The KR4 does 3000 lumens across a 29mm bezel. That is 4.5 million lux. The KR1 does 1300 lumens across a 35mm bezel. That is 1.3 million lux. These numbers are only accurate at a distance of 0 inches.

Robin Dobbie wrote:
If there was high enough lux to melt glass, wouldn’t other things at least be getting scorched? Like the wood counter that’s well above the bezel line on the bottom of the beam? Or the dark base it’s sitting on? Or the plastic fresnel which would have to have a far lower melting point than the glass?

The bubble looks localized, the size which could suggest a jet from a torch? Also notice the camera is panned quite to the right, there are no other angles of the melting, but seemingly plenty of angles for everything else.

Those are astute observations. Yeah the table should have scorched and the plastic lens should have melted.

The 1 camera angle is easy to explain however. They were using a high speed camera to film that shot. Those cameras can easily cost $50k so usually people don’t have several of them. If they wanted multiple angles they would have needed to do the shot multiple times and destroy several $30 radiometers and that would have been a frivolous waste of money for these guys.

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It’s a fun build, but I feel like they avoided showing any direct comparison of the output to the MS18, were they disappointed in the result? In the stadium, they never showed the beam. They showed the beam of the MS18, but for their light they only showed it directly from the side, and looking back at the glare from downrange. In the shop it was very overexposed and vague. This is way more drama than science.

Also those electronics are a mess, they could have used a higher voltage and eliminated a lot of drivers and wiring. Why did they custom design and print PCBs for the LEDs and then use cheap off-the-shelf drivers and 5V regulators?

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electromage wrote:
I feel like they avoided showing any direct comparison of the output to the MS18

That’s because they did.

Quote:
This is way more drama than science.

I feel it’s more gorilla marketing than anything. And it’s working because we’re all fucking talking about it, still.

Quote:
Also those electronics are a mess, they could have used a higher voltage and eliminated a lot of drivers and wiring. Why did they custom design and print PCBs for the LEDs and then use cheap off-the-shelf drivers and 5V regulators?

I’m not saying these guys are idiots, but I know I’m an idiot and those are the caliber of drivers I might have come up with. Although, I would have used fewer, higher capacity units with active cooling. Also, time constraints. Custom PCBs because they had to use 300 XHP 70.2s because they wanted their comparison to the 18 version to be more relevant. If the manufacturer of that light was a sponsor, which I feel is a strong possibility, they might appreciate that, as well as having an even shorter turbo limit than the sponsored light.

Parametrek wrote:
The 1 camera angle is easy to explain however. They were using a high speed camera to film that shot. Those cameras can easily cost $50k so usually people don’t have several of them. If they wanted multiple angles they would have needed to do the shot multiple times and destroy several $30 radiometers and that would have been a frivolous waste of money for these guys.

I feel like this wasn’t thousands of FPS, it was within the range of pretty much any kind of modern camera that does 120FPS or something like that.

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It was an impressive mod. These guys got the $$$ so I don't think Imalent was a sponsor, just google: "worlds brightest flashlight"

Loved the drive around town on the roof!