8*3535 LED mule is available for the D4V2 and KR4, the LED is less than 1mm to the glass lens.
Estimations for 2.5A*8pcs (20A) with 2% glass lens output reduction.
SST20 J4 4890lm OTF
SST20 J5 5150lm OTF
SST20 L3 7400lm OTF
XP-L HI V2 6900lm OTF
XP-L HI V3 7200lm OTF
Same question here but in regards of the D4S. With around ~2A or more per led it would make a very practical light with regulated runtimes and plenty of light.
Mules usually loose, but this is why Hank noted the LED's are just 1 mm from the glass - maybe loss's are not as severe. For general use, a mule is ok as long as it's pointed away from you. Exposed LED's and looking at them is blinding, and if you have the light sitting on a table or ground for example, there's no avoiding it. Shielding would help, but then you lose lumens... Well, at least there's no ugly beam patterns, rings, tint shifts in the beam, etc. -- at least that's what I would think. Beam should look more like a aspheric pulled in, but way wider.
^ What he said. I have an EDC05C, the lumintop 14500 light with the 4 nichia side emitters - if the side emitters are anywhere in your field of view, they’re very, very bright and distracting - and this is at like 100 to maybe 400 lumens max - you can’t just sit a mule / non-optic-LED light within your field of view without it inadvertently blinding you, so take this into consideration if you were planning on using an Emisar mule for things like ceiling bouncing. With that said, the mule-esque side emitters on my EDC05C are really really useful for a lot of things - walking around at night, tasks where you can angle the light away from you, etc… Be aware that as a dog-walking light, a non-optic LED light, like a mule or my EDC05C, will be extremely bright to your dog if they turn around and look at you - with an optic or reflector light, you can direct the main beam away from your dog or other people - with an unfocused LED, you can’t really do that - it’ll just be super bright if you’re looking in the general direction.
Mules have their uses. The light pattern is very broad… nearly 180 degrees, usually with no artifacts. They’re usually a lot like an aspheric zoomie in flood mode, but with an even wider beam and without the sharp demarcation at the edge of the circle. Also, an 8-LED mule will be much, much, much brighter than any zoomie’s flood mode.
Think of the output as being more like a room light that you carry in your hand. It illuminates everything in your field of view, but usually only to very short range.
Also a tiny light like a D4 or KR4 won’t be able to sustain high output for long. Expect it to ramp down very quickly due to heat.