Looks like a nice 18650 stainless steel tube-style light. Two emitters in a split reflector. Therefore probably neither give such a great beam profile, but useable and useful if it works.
Cannot tell which emitter is which from the description, but it looks like one is XM-L2 (silver surround and dot in corner) - likely the normal white emitter. Whilst the other would be the UV/Purple emitter.
Does anyone have any other information about this light, particularly the UV emitter and whether it might actually function as expected for a UV light?
Nice beamshots! Anyway, there are UV emitters that emit within the UV spectrum (plus a fair bit of blue/violet spectrum visible light. Then, there are also wavelength specific UV emitters that have a peak emission at a particular wavelength. As far as the latter category is concerned, Nichia UV emitters are amongst the best. Most of these emit minimal visible light, as has been mentioned.
Here are a couple of Nichia UV emitters that have been used in flashlights. Not cheap nor easy to source. You will need to reflow.
NCSU033B 365nm
NVSU233A 365nm
Why the big deal with these emitters?
Found this video on YouTube by hugo2x reviewing a nailbender P60 drop-in using the NCSU033B…
:exmark: Please use eye protection at all times when using UV emitters!!!
Well, 365nm is about the lowest you can go with the NVSU233A - other flavors include 385, 395 & 405nm.
And, if you’re going to get someone to reflow for you, why not just buy one of mash.m’s P60?
He’s sold a small number of P60s using the NVSU233A previously.
Living dangerously? To me, that would be the NVSU333A (3.6+W) 365nm. Definitely a skin cancer hazard. And if that doesn’t get you, the heart attack from the price tag probably will. These are after all designed to be run in water-cooled arrays.
To be fair, the Nichia UV emitters were designed primarily for industrial purposes ,e.g lithography, ink and resin setting, etc. Don’t think their engineers envisioned flashaholics cramming these into flashlights. Which is why they cost so much and why they are so difficult to procure.
Yup, 365nm + 385nm + 405nm NVSU233A sounds like a nice combination for a triple.
Though, offhand, few issues I can imagine :-
The price of the 3 emitters alone would be ridiculous
Sourcing the emitters - 365nm is available from a tiny number of vendors, but the other wavelengths are not that easy for the end-user to get hold of
The emitters have different Vf about 0.3V typical between the two extremes.
The release of magic smoke from said emitters is detrimental - see points 1) and 2)
i reflowed 3x3535 365nm on noctigon triple, i paid $20 for 4.
i installed them into this light, originaly it was rguv tripple, but after green started flickering, i repleaced g,r,uv tripple with all 3 uv triple. 700ma each.
but you can not use plycabonate tir sich as carclo, you need only pmma tripple from ledil, and window must be pmma too, polycabonate does not let uv below 400nm thru.
i bought 5 of these, they are ok, they make white paper, price stickers glow. as for lifetime, i did not run any of uv light i build for even 1\10 of that, can not confirm or deny it.
EDIT:
Also I have noticed that LCK LED and LEDDNA both have the name Law in their PayPal name and both are from Hong Kong. I wonder if Law is a common name in Hong Kong.
It is interesting that it has a footprint that fits one of the Sinkpads, and I'm curious if the output peaks higher and at a higher current like that. Looking forward to your build with it !
It is not the latest generation though, the NVSU333A U365 (mentioned above as well) has the same footprint but has an output that is more than 6 times higher (3640mW at 3.5A). I would like to see that happen on a Sinkpad as well :-) I think I do not want to know the retail price :-(
I got an Ebay cheap 365nm emitter and when put in a host was disappointed that it had a white light spot in the middle of the beam, so with a uv filter on my camera I took a photo of it while it was on, high f stop, high speed, and noticed that the white plastic centering ring was the only thing I could see, so I took it out, and the white spot disappeared :bigsmile:
Usual disclaimer, worked for me, not guaranteed to work for you
Sorry, I bought it in January, all gone now, however the seller has a couple of other 365nm led’s mounted on cree type stars.
As usual its pot luck, link to the ebay.au store,