Maxtoch XSWORD L2K // 2000 Meter Laser Tech Thrower // Full Review

Wetool states that their laser puts out 0.25W (ouput energy) for 200 lumens. This light here won’t be that much stronger than that. 7W would be in a different world (also requiring a much bigger light with much better cooling). Lasers are much more fragile than LEDs. Also, this driver is probably not a standard buck driver. Laser diodes are normally driven with special laser drivers which regulate with less voltage spikes etc.

What about the wattage?How is it possible to have a 10W laser,when I know that Sanwu for example goes max to 7W?

Only by combining multiple diodes, which is very common. 7W per diode is only reached in extreme mods.

Yeah, lasers use constant voltage, opposite of LEDs.

[quote=djozz]

Hmmm… How does 430 +kcd sounds to you in 50mm(47mm) B158 with emitter XP-E2 die size? LOL yes… Very possible, and this will strike whole forum soon. So goodbye XP-G2 S4 2B and Black Flat… Game over for that leds… :beer:

But I agree that B158 has natural opportunity for 53.4mm lenses (Just look how much unnecessary “meat” their 50mm lenses have).

Sometimes I really can’t understand manufacturer blindness on some thing… Even if you draw them, explain them etc. They still don’t want to listen.

So I really hope Maxtoch will make LEP light suitable for all hunting situations… Probably smaller one with zoomable function. Or same size with zoomable function. I will wait…

Correct me if I’m wrong, but I think I have the basic understanding of how this light is working.

This should be the basic design used in the Maxtoch. A rear firing laser to excite the phosphor in a very small dot, then a double convex (double aspheric) lens to produce a “parallel” beam out the end. Think of sunlight through a magnifying glass creating a tiny focused source of light. Now it’s night time and you reverse the source of light. You go from a tiny source of light to a wide parallel beam.

Oops, I didn’t make my link clear.

Try 2: https://www.youtube.com/watch?v=e11h73WhqK4

Turn it up loud, and admire the syncopation.

Edit: and the fat Moog bass.

https://en.wikipedia.org/wiki/Autobahn\_(song)

Deutsche engineering. Driven by a need for speed. Coming to a flashlight near you soon, by trickle-down.

Why do you keep posting that? You’re cluttering the thread.

Frankly there is no thread.

Talk about it, hypothetically, but I doubt that you are going to get any useful tech. data. The rest will be supposition.

A very few people now have these, but don’t quite know what to make of them yet . They are very different.

This is beyond what has gone before, and the standard ability to measure the thing (if that matters at-all).

So, I suggest, a period of quiet contemplation, before posting again. Particularly if you don’t actually have one, very few do. (also applies to me, but I do have a deep technical understanding of the subject, and am impressed).

Otherwise, well, I’d better not say.

This actually IS a thread, posted by a friend of mine, and Tom Tom, you’re out of line.

I am one that has the light, as is my friend, and we’re trying to bring it out to those interested. All relevant measurements have been posted, along with beam shots and some tear down pics, so do you actually have anything relevant to say or are you just loitering here, trolling? Stand down or go outside please.

Not raining, 61º, few bugs, barely a breeze… I got out the Canon 5D MK IV and put my 70-200mm f/2.8L IS on it, set it up on a tripod with the XSword clamped to the center post… these are straight out of camera, JPEG’s as processed in camera at manual settings of 1/2” exposure, f/5.6, ISO 1600 WB set on Daylight.

at 200mm , a base shot of the neighbors barn with his US flag illuminated,

same settings, XSword on high… you can easily see the corrugated barn metal inside the barn and the tree line on the other side of the barn at over 750 yds…

And set up to point at the water tower 1.9 miles away… at 70mm first…

And zoomed in at 200mm…

These are full sized JPEGS SOOC, 30MP images so you can see for yourselves, this little light easily puts visible light on the water tower at 1.9 miles distant! AND, I forgot to take the clear glass lens off that I put in the threads to protect the aspheric! So it even gets better than these if my memory would just work for a change…

By the way, humidity is 90%, supposed to start raining again late tonight and rain for 2 more days….

Nice shots dale……definitely a little beast of a thrower this new tech.

A screenshot showing some relationship for those pics…

A little update.


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There is just no way that that is true. I suspect they are lying about the laser power because they are concerned about safety regulations.

In lock’s review he measured a max output of ~250lm. We all know how accurate homemade measurements of luminous flux can be, so let’s say that the light is actually capable of putting out 200 lm max, right on spec.

The spectral luminous efficacy of white light is commonly quoted as 300lm/W, but obviously that depends on the actual light source. “(this paper gives 250-370 for ‘ideal white light sources’)”:https://aip.scitation.org/doi/abs/10.1063/1.4721897
Let’s assume that the Weltool produces an optimized spectrum with lots of green and is able to reach 400lm/W.
Let’s also assume that the conversion process in the phosphor achieves 85% efficiency (IDK what would be a realistic number here) and that 60% of the light emitted by the phosphor makes it through the lens and out of the light (rough estimate).

Based on these assumptions, we get:
OTF lumens, for a laser output of 0.25 W:
0.25W * 400 lm/W * 0.85 * 0.6 = 51 lm

Laser power, for 200 OTF lumens:
200lm / (400 lm/W * 0.85 * 0.6) = 1.0 W

So the laser power needs to be roughly ~1W or more in the weltool, unless I heavily underestimated the amount of light that hits the aspheric lens.

I don’t know what the power (wattage) is coming from the light , but I recently got ahold some of Maukka’s test lights to check my light meter setup and I was about 2 1/2 to 3% UNDER what Maukka’s big expensive sphere showed , so I am pretty confident in my measurement of 417 lumens coming out the front of this light with my light measurements.

I would guess that Maxtoch is using a 3W laser diode in the Xsword.

My XSword checks out at 424 lumens with fully charged cells, holds it’s own quite well as the cells deplete. My XSword is only pulling 1.33A at the tail, so it’s really taking it easy on the 2 18650’s.

I have a 3W Blue laser and it’s pulling 1.61A at the tail from two 18350 cells, no longer making full power as it’s pretty aged now. It does, however, still burn what it hits as far as 25’ away (or a little more).

Beyond me what all this means except that the XSword puts light on a target an extreme distance away for the amount of power it’s using. :wink:

My green laser is rated at 200mW, bought as a module, and it pulls .53A from a single cell. (18500 in this case) It’s bright, but not a burner.