Just buy a gym-ball, fibre-glass the outside, not forgetting the non-stick coating, let it set, remove the bladder, then paint it internally with whatever (that is the important decision, BaO would be nice, but unlikely to be readily available.)
Set up some sort of baffle, and fire away. Into a sphere.
Bits of bent toilet pipe aren’t really going to do the same job.
Easy for me to say, but I’ve never actually tried it, because I’ve never had a reason to worry about precise numbers.
Nor do I care much about numbers from these contraptions, just what I see with my imperfect eyes.
And there it is in a nutshell. The numbers are comparatively meaningless in and of themselves.
I pull a light out of the box, look at the manual, drop a charged cell in and see if matches Their numbers, then I take it apart and rebuild it my way, see what gains I’ve found, maybe tear it apart and address some issues, put it back together and test it again to see if it’s where I think it should be. The numbers are relevant in that I’ve spent time and effort to gain output. I post these numbers here so that people can see what the light does out of the box as compared to what it does with some tinkering.
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.
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…
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.
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).
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…
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.
