Hopefully it can also be retrofit into existing D1v2 hosts, I’ve got a pair of those with emitters that would benefit (MT-G2, XHP70.3 HI)
I asked if he planned on making a 22mm LumeX1 for D4V2/D1, and his response was “We do have the plan, however, it may take long time to complete it.” It sounds like it should be compatible with a D1 also.
I was wanting a more powerful 22mm driver with Anduril2 for my M21H, so I just got the normal 2A boost driver. I ordered some SRP6050CA inductors and new resistors to up the current to ~3.2A. I realize I won’t have the crazy low moonlight and it’ll have worse efficiency, but I just want more output.
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I got a DA1K with the 3000k SFT-70 and 10392 throwy frosted optic. This is a really great combination, it kind of reminds me of a Surefire 6P with the way the beam looks, and the new driver which gradually turns on and off making it look like an incandescent bulb. I’ll post some outdoor beamshots later.
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This is at around half brightness and then the top of the ramp or turbo. Much more throwy than quad lights like the D4K, maybe unless you use the really throwy emitters like the osrams.
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New tech in the service of emulating the old 
At least that D41K is bound to cost a lot less than an “authentic” Surefire 6P, which is right now selling on eBay to the tune of a grand and change (and here’ s an archived page for posterity).
I hope the LED lasts longer than the 6P bulb 
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Damn, 1k $ for a 65lm light is crazy…
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So, a year ago, in response to Hank asking if he should offer a k9.3 with a UV channel I said this:
And today I took delivery of this:
I was wrong 
(Btw, what happened to this thread? So quiet.)
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Amazing light! If it was a triple channel with UV LEDs in all of them, with UV-A, UV-B and UV-C respectively, then it would be a full-spectrum UV light covering every possible UV need. It would be a guaranteed buy for me.
Just looked it up on Hank’s website and only the D4K can have 3 channels… and only one of them can be UV, and only at 365nm… so I keep dreaming
I was wrong
Well, never say no to a flashlight, I guess
And congrats on the new light! 
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Thanks! Low-key wanted it for a long time. 5000K 519a on the other channel. Very nice. One of my favourites
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(Btw, what happened to this thread? So quiet.)
- A significant upgrade is a secret menu item: the Lume driver is available by request only in the D4K and DM11 (for compatible emitters).
- Two updated lights (D1K with Lume driver compatibility and DW4 with 21700 compatibility) are in the “coming soon” phase.
- The D4S has a 21700 tube now. It’s the same diameter as the existing tubes (uses the same tailcap), but longer and with a spacer inside.
- Not directly related to Hank’s manufacturing, but the POVD feature has generated a lot of discussion (on BLF and Reddit).
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That’s tricky because of the Vf differences between the emitter types. The UVB and UVC are ~6V, the UVA is a ~3.7V. You could maybe set up the driver as a 3x12V multichannel and then use the PCB to have 3S UVA and then 2S UVB and 2S UVC…
Just thinking…!
Oh FWIW there are a couple “full-wave” lights available now. One from Engenious designs and one from Raymond Wu.
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- You can order the D4Sv2 too with LumeX Driver now from secret menu …
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How exactly? I’ve asked Hank like week ot two ago - he said LumeX will be available in some months to come…
I got it in D4s, ordered one week ago after special request … marked as LumeX1 on the driver backside
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Which chip inside and will the 365nm do harm to humen?
Looks like DW4K is now available. Along with dual channel model
Lume X1 boost driver available for single channel
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I also went UV on my K9.3, but with a 5700/4500/4500DD mix.
The beam is a little different in ways neither a camera or LM4 can really show. The only word I can think of to describe it is “creamy”. Very nice though. Might need to get a D3AA with the same mix once my wallet recovers from my last eight lights and the holiday season.
Anduril is great since you have plenty of levels well below the maximum. And one nice thing about wearing prescription glasses is that many block out UV.
I’m not sure what Hank uses for UV emitters, but I will say that the reflected UV-A isn’t any worse than natural sunlight. Shining it right in someone’s face might cause a problem though, especially at full power.
I’m not sharing your opinion, looking into the light of a 365nm UV emitter is as harmless as watching an arc welder doing his thing without wearing goggles. Looking for the effects of UV light (in previous posts) on this forum you will learn that long time members who are very aware of the risks of UV light often mention that testing end reviewing an UV light often is followed by a (limited) period of discomfort.
Let me explain. Looking into the sun may blind you permanently, as some sadhu’s from India can confirm. Even when the sensors in your eyes are doing their best to contract your pupils to the max to let in the least possible quantity of light. That tiny bit they can’t keep out, is enough you turn you blind. But… the sensors in your eyes are not equipped to “see” UV light, whether coming from a flashlight or from an arc welder. So you pupils stay wide open and your corneas and retinas get the full blast.
For a glance at arc welding, here is a LINK.
But here is the bit I would like you to pay special attention to, before suggesting it is rather harmless.
Eye damage
Exposure to the brightness of the weld area leads to a condition called arc eye in which ultraviolet light causes inflammation of the cornea and can burn the retinas of the eyes. Welding goggles and helmets with dark face plates—much darker than those in sunglasses or oxy-fuel goggles—are worn to prevent this exposure. In recent years, new helmet models have been produced featuring a face plate which automatically self-darkens electronically. To protect bystanders, transparent welding curtains often surround the welding area. These curtains, made of a polyvinyl chloride film, shield nearby workers from exposure to the UV light from the electric arc.
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It seems that you are disagreeing with a straw man, and misplacing decimal points to do so.
You conveniently skipped the part where I differentiated between looking at the emitter and looking at the reflected light when using the light.
And where did I say Sunlight was harmless?
You also seem to think that the average UV light has nearly the power of an arc welder, which is something I have experience with from before I changed trades, while also underestimating the UV-A output of the sun even when you are not staring directly at it. And also ignoring the fact that the average light is far less powerful than some of the things Sakowuf likes to play with that scare me a bit despite not being too concerned with more normal UV-A lights. I will grant that the M44 is a light I would be more careful with, and most definitely not shine in anyone’s face, but it’s not one I would worry about waking up with cortical cataracts or retinopathy simply because I used it to scan my living room to see if/where my cats misbehaved.
I get the same with visible light, especially anything under 3500K. Point?
I get that you have no way of knowing the background of random people on the internet. I’ve been in optical/optometry long enough to know a few things about eyes though. Suffice it to say, I am well aware of what UV can do. And if the dangers were nearly as bad as you state, then my boss would be a lot busier, and I would have a much different opinion about UV lights.
And again, you equate the average UV light with an arc welder. I have yet to see a UV flashlight hit photochromic lenses so hard that they become perma-tinted, so I think it safe to say that there’s a much larger gap in intensity than you seem to be saying. Was the hyperbole intentional?
Was that supposed to be a pun?
Again, where did I say it was harmless?
The 1980’s is not my idea of “recent”. I remember them well, and rather fondly as I had a lot less joint pain back then, but it’s been a while. That and the repeated comparison to arc welders has me inclined to think that we have differing perceptions on how scaling works.
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First of all, let me apologize for the unease I’ve cause with my remarks.
It was not my point to offend you, only to elaborate on a few details.
Nevertheless, the are a few points I would like to clarify.
Members who have worked with UV lights over the years, including me, warn about the dangers of reflected UV light.
When working with a 365nm UV light, avoid reflecting light from mirrors, windows, and shiny kitchen (bathroom) tiles.
Your last remark, about the 1980’s: don’t blame that one on me. I got that paragraph from Wikipedia with copy-paste.