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

Thinking about this 1.9Mcd throw…
I may have missed the exact number but I estimate the effective lens opening at 55m diameter. Say I want 300 kcd instaed of 1900 kcd (300 kcd is my favorite throw number :slight_smile: ), in theory I should achieve that with the same flashlight with a lens with 6.3 times less surface area, so a mere 22mm diameter lens should do the job, that is the front opening of a Emisar D4. The mirror in the light path will probably block a somewhat higher percentage with a smaller lens, so maybe 25mm is needed for 300 kcd.
The Weltool W3 has a front opening that is about 25mm (bit more even so it looks) but achieves only 180 kcd. Sounds like I have to wait for a better version in this size then :slight_smile:

So it should be comfortably over 2.0 Mcd in excellent conditions.

I’m sorry, but the straight up is that I’m a dumb ass. Forgetful as the day is long. That high number bugged me throughout the night, around 2 AM I figured it out. I forgot to turn my headlamp off. It should be embarrassing but I’m forgetful for health reasons and it is what it is.

So, 6 AM this morning finds me back out in the cold rain, doing it all over again… without the headlight.

1.3Mcd is the real lux number at 50M. Still raining lightly.

Again, my bad, sorry about that.

Still not a bad number at 50 meters………I had the 1.8Mcd indoors at 10 meters with my sample.

520x2500=1300000 for 2280.35M throw. Or 1.4169 miles in the rain. (I’m sure the rain would block it more out further)

Right Jason, I can see it being set up like that, it would also explain why the mirror is slightly off center on mine… that lay-out explains that set-up quite nicely.

I didn’t remove this pcb but maybe I should have, the laser is almost certainly under here…

Thanks for the 6AM update Dale, your dedication to the hobby is undiminished! :smiley:
That places the Weltool in the same efficiency-class as the Maxtoch after all.

Jos, actual lens opening is 53.4mm. :wink:

Thanks, that enables quite accurate calculation of the gain of this LEP module compared to a Black Flat, in real flashlights, assuming that Maxtoch optimised the LEP module for todays standards. Maybe later we find out how to overdrive the blue laser for a fast and short LEP life :smiling_imp:

With the Black Flat in a rough B158 mod (47mm lens) I got 350 kcd, but with some sorting and optimising people should be able to get 390 kcd. Correction to a 53.4mm lens would give 503 kcd. So this LEP technology gives 2.6 times as much spot brightness as the best current overdriven flashlight build. A wavien collar can increase the luminance of the die 2.2 times, so with one, a led actually comes pretty close to a LEP module. I wonder what the upcoming HX Boost led achieves with a collar…

why don’t make white laser( 3 RGB laser combined), the beam will be super tiny and super bright, but it will give ridiculous throw

Pretty simple and obvious question with a very complicated and not so obvious answer.

To get white light, equal parts of the color spectrum are mixed. Output from lasers is very distinct, a particular wavelength, but to control the effective output is perhaps more complicated than it would seem. Easy to put out a large amount of green light, not at all easy to produce an equal amount of red light, and blue is also not easy to make the output match green. The resulting mix of color, IF the outputs are matched through a great deal of effort, is not the white light you would want to use as a “flashlight” because of the 3 specific wavelengths mixed instead of an equal amount of all light.

And then of course there’s the radiation, the part that is damaging to animals (human’s are animals too of course!)

So, level of difficulty, expense, and dangerous output are the 3 primary reasons it’s not done.

(This is of course my take on the subject, accuracy may deviate from actual truth based on factors beyond my control, ie: how fast have I drank this mornings coffee…)

It is not the laser itself that makes the light you see from the Xsword , but instead the laser excites the phosphor die to produce the light.

What you are talking about doing could probably be done in some way , but in my mind it would be a laser making light out the front instead of the phosphor die?

Dale was quicker on the draw than I was looks like……….lol

Right robo, and at high enough power levels to have the “throw” indicated, blue lasers burn things. My weaker green laser still easily out throws a 3.3W blue laser and of course, to get a red laser to fire up at the same power levels as a green laser is costly. As is the blue laser, expensive AND dangerous! There are now 7W blue lasers, as I understand it, at a price point of around $350, but they’d burn anything within range of your eyes and obviously, eyes could and would be damaged by reflections even, and from much further out than one would think.

Yes all true……and you had the same thoughts that I was thinking but didn’t post about the cost of producing such a light and the dangers to human and animal eyes also.

Yes, that’s how they do it.

I believe some years ago someone (LPFer) has already managed to combine 2 diodes 2 beams into a single one. Managed 10 watts at 455nm or around that level, can’t remember clearly.

There are white lasers.
It’s just a combination of 3 colours.
You end up with very low quality white since you have just 3 narrow peaks.
It’s also dangerous, has speckle, requires unfocusing to make a spot that is not just a few mm big, etc.

Basically it’s just a laser instead of a flashlight and doesn’t really work for lighting up objects.

This one, 10 watts. There are probably a few others as well by now.

Back when I was testing the Thrunite I used a green laser to aim the bracket on my tripod so the Thrunite would be as close to centered as I could make it when testing at 1 mile. Here’s a shot showing the amount of light the Thrunite put on an 8 1/2” x 11” sheet of paper at that one mile…

Same piece of paper as illuminated by my green laser…

The hot spot of the laser was around 20’ in diameter at a mile… and here’s a shot of my blue laser shining across the same mile of water…

Divergence patterns are different for the different kinds of lasers, so that too would be an issue when it comes to the blending of RGB and trying to make the result end in throw.

My wife was across the lake with the tripods holding the sheet of paper and the camera, she wore the proper eye safety goggles and as such, really had issue determing the placement of the laser for aiming. So there’s also that, with the proper eye protection the beam is nearly invisible….

Holy smokes that’s one tight and powerful beam 2100! Scary I bet, trying to use it and not burn anything!