I don’t know much about flashlight LEDs, but it seems like you have a HUGE variation in the performance of the two 5600K LEDs. I know the planned drive current is around 25mA, and the variation there percentage wise is not as large as 90mA. But just seeing a 50% variation if Vf at the same current, and a 4x variation in lumens at the same current, makes me think the LEDs are terribly inconsistent, or you have some sort of a test setup issue causing the variation.
Not saying this to be critical, but my observations. Thanks for running the tests, I know it takes a decent amount of time and resources to do something like this.
Sbslider, that’s not actually two separate 5600K emitters. djozz plotted the lumen output as a function of the current of a single emitter as the dark blue line, and the forward voltage as a function of current for the same emitter as the light blue line.
So it’s not a test of consistency between emitters, although the result is consistent with a test I did separately.
I’m pretty sure that Sofirn does not do HA III coating, let go on a 6 dollar light. I guess that their silver flashlights are anodised but not to HA III.
Convoy’s have a nice clear coating but I know that Simon is keen on good coatings. But still I doubt it is HA III
Nah, I want the bare LEDs for a multi-emitter light! I’m thinking a DIY photographic ring light with tint mixing. Or maybe a nice High CRI light for my house.
EDIT: I keep saying tint. What I mean is CCT or color temp. :person_facepalming:
There have been several group buys in the past, but none planned at the moment that I know of.
I wonder if the LED’s are something Richard at Mountain Electronics would interested in stocking. They’re good for tinkering since 5mm LED’s are easy to work with.
I think somebody a few pages upthread found an Australian vendor that has them. You might see if you can find the post.
I have never seen a real (good) HA3 coating on a Chinese light except for maybe Zebralight. At the very least they are not as good as they could be. The best coatings I have seen/felt are from HDS and Surefire (and I have no problem criticizing their lights for lots of other reasons). Maybe also Lupine. This is entirely subjective though. My current Armytek definitely gets way more scratches from keys than my HDS ever did.
Today when I arrived home I picked one of my 2 AAA flashlights, the Nitefox K3 and its diffuser.
I don’t know if this is relevant, important, doable, interesting, or not, but given the (future) specs of the flashlight being discussed here, would it be “nice” to have a diffuser for it? Again, I don’t know how “important, etc…” it would be, and also if it would add anything “interesting”, but would it be nice to propose a diffuser for this light? Just an idea… :arrow_right:
This is a keychain light, floody, and only about 8-10 lumen. Diffuser is really not needed but if Sofirn would make it for those who wants it as an optional accessory, that would be great.
I never had a diffuser on my E01 that I am carrying. Wouldn’t it easily come off in your pants due to putting the key in and pulling it out?
+1 The only way I see a diffuser being useful on a light of such small output, is if it had TK’s candle mode installed and you wanted to use it while in a concert. :sunglasses: :+1:
Hum, the perspective I thought was more on an indoor environment. With the warmest tint, I thought it could be of some use! But, as I don’t know how that will end to be in terms of luminosity and beam, I don’t know if the idea was good or not! Hence my suggestion
Thanks for your inputs, though
BTW, David, on concerts I like the stroooooooobes for better headbanging :smiling_imp:
