I have the blf edition. Pretty true to spec i would say
The Black Flat should get up to around 540cd/mm^2 with the collar, but only with perfect heatsinking. You also need more than 11W, maybe around 16-18W.
All the speculation, so funny. I’ve had a sliced SST-40 doing over 1Mcd…
Agro? How do you establish 11W consumption? They do state that they use a pair of 3500mAh cells, but they do not state what the emitter is or if it’s a laser, so how do you know what voltage the light is operating under? Just curious… 2 hours on 8.4V at 3500mAh would, I guess, be about 1750mA per hour at 8.4V supply… after that I’m lost. lol
A high capacity cell 12 Wh at super-low currents and 11 Wh at higher ones. So we have 22 Wh consumption over 2 hours.
Note that it’s average consumption. The light may not be able to deliver full output all the way until battery is discharged. So it may use more power at peak output.
You are absolutely right, no reference to a laser source but considering the performance + “newest focus beam source” (as it is said in its description) = great chance that it is a LEP indeed.
But the “focus” woud be in the aspheric lens, and it says it uses a Military Grade aspheric with dual AR coatings. Wondering why they didn’t specify? I have spoken with a rep there multiple times over the years, I sent her a message asking about it…
Hmmmm, considering that I have a light I built from scratch that makes 1685M throw from an XP-L HI I’m not reading laser in those statements. Mine isn’t even an aspheric lens. Not saying it isn’t a laser, just not assuming anything. Difficult enough to decipher the Chinese claims from what they actually say, not gonna start trying to guess anything from what they DIDN’T say! lol
I won’t be surprised if the Maxtoch XSWORD L2K is made like the The Acebeam W10 (review) which uses a LEP + convex lens
I am subscribed…
Wow. LEP is crazy looking 
cd/mm2 is not really a unit. lm/mm2 is. Knowing how many lumens per mm2 an emitter gives off tells you how focused it is/how easy it is to focus.
cd/mm2 on the led makes no sense because the candela doesn’t depend only on the led. It depends on the rest of the light as well.
EDIT: 50% of the time I’m right every time.
Actually luminance [cd/mm^2] is a unit. It’s also the only unit related to light that the human eye can actuall determine. Lumens and lux cannot be accurately determined by the human eye (only by comparison to another light source). Luminance is how bright a light source looks when you look directly into it (for example the sun has a very high luminance).
Is this your opinion of the established unit of luminance (cd/mm^2)?
Luminance of a bare die does make sense. A 4 mm^2 die with 200 cd/mm^2 would have 800cd above it.
I am apparently misinformed. Sorry about that.
That said, I don’t think we are using cd/mm2 correctly here. I’m gonna read over the wikipedia page a few times.
EDIT: I see. cd/mm2 is directly related to lm/mm2, but it’s more useful because it can also be used for domed leds, for example. Am I right?
Luminance is the intensity of a light source. It is the same from any angle.
If you multiply it with pi (3.14) you get very close to the lumens/mm^2.
We are using it correctly. No need to check. Check out Endermans calculators. They will show you how it all comes together.
This XSword actually does use the Laser Excited Phosphor technology, and it does do 1Mcd for 2000M, as tested by a friend of mine. The run time is due to a low 1.31A tail current ftom 2 x 18650’s. The beam is wickedly tight and looks greenish in the air but the hot spot on target is a warm white that is decent. Zero spill or aura, beam is like a fat laser… epic pencil beam thrower. Can’t wait to play with one of these! Lol
Only 1.3A draw for 1MCD? That sounds like dream. But why 2x18650 configuration? Isn’t 1x18650 configuration enough?
Will it have zoomie mode or it will have fixed beam?
It is a fixed beam aspheric, the light exists and samples are out with reviews about to show up.
Maxtoch builds a majority of it’s lights for Military use and hunters. A two cell battery tube is easy to mount on a rifle and the buck driver allows longer run times, which is everything in the target field.
The numbers are real, testing is being done and beam shots exist. They say 500 lumens, although I’ve seen testing put this at an even lower number, nonetheless the candela and throw numbers are real.
The tint was set for illumination through fog and/or smoke, Police, Fire Departments, Search and Rescue, Military…. and it Does penetrate fog and low misty rain conditions. I know one of the reviewers and his testing has been done in these conditions with amazing results!