Thanks. This LED is a beast!
What’s the color like? Based on the sbt-90 gen 1 info, if the binning is similar it seems like it might be a bit green.
Thanks a lot djozz. May I get some raw data please?
Thanks a lot, good to know.
Definitely the Uber-Boss led.
At last 
Thanks for the great test
regards Xandre
The second batch NI40 I got from Neal had a nice tint. As you can see in the picture below the FT03S is more yellow/green at all levels. Also seen a picture on a Chinese forum which shows the same thing. Not sure if this has anything to do with the reflector/lens. Probably just the batch of LEDs.
I will do some tint measurements too, had no time for that yesterday, maybe this evening. But if the tint is not properly specified, depends on from who you got it, and then the led is sold out there anyway, apart from satisfying some curiosity it is not data that is very useful.
Lost on the tint lottery with my K30-GT. In actual use it’s obviously not quite as noticeable as when white wall hunting, but I do still wish it was less green. Despite the tint, I really do love the beam profile on this light.
I removed the window/lens from my 5th SBT-90.2 and put it in a light, very impressive, any plans to do the same for scientific purposes… 
Ehm, not really, my “science” is still on a ration for the next 12 years (wife,child) and I have plans for this led 
So what is the impression of removing the window?
Tint is usually better with the AR window removed. I’ve been taking em off SBT-70’s for years now.
How tight is that black frame that the window sits on? In my mod I’m planning to ream the reflector so that it fits precisely around the frame. But it must not be sheared off the first time that I drop the light and the reflector applies sideways force on it.
It could just be the best performing SBT-90.2 I have tried so far….I don’t know? But here is what I got….
a. Warmed up the tint a bit…
b. Went from 358kcd to 408kcd (Original FT03 SST-40 GB Light)
c. Went from 5000lm to 5780lm at T/O (after I checked the throw so it was still pretty warm and battery drained a bit)
Sounds good. It looks like an uncoated window so I would expect maybe 5% loss from it, so the gain is a bit higher than you would expect from just the window.
Any comments on how rigid that black frame was?
It is glued on fairly well. I used a Feather platinum coated blade and worked my way around the LED pad, slicing at the seal little by little and being careful not to power thru and cut the bond wires…or slice off a hunk of finger…the blades a super thin and sharp, just keep the blade on the LED pad just under the steel frame of the lens…
. 
Are these available for purchase to the public yet? If so who is carrying them?
Wendy…she has 45mm MCPCB’s also…
. Shenzhen Lantend Electronic Co., Ltd | Room228, Block B,Wanyuan Business Building,Chuangye Road 71 Area, Baoan district, Shenzhen city of China
M:+86 18938845498 | T: +86 27810810 | E-mail:wendy@lantend.com | web:www.lantendled.com
. Neal of Neal’s Gadget’s had some too…
I wonder how it compares to a dedomed 70.2 on output and throw?
I placed a small smooth reflector on top of the bare led that made a decent hotspot on my ceiling. I measured the tint of the hotspot at 4 currents.
| current | CCT | duv | CRI |
| 0.1 A | 5100 K | +0.0164 | 67 |
| 0.5 A | 5140 K | +0.0152 | 67 |
| 2 A | 5270 K | +0.0122 | 67 |
| 10 A | 5620 K | +0.0061 | 67 |
The colour temperature is fairly neutral, at lower currents even significantly lower than Neal listed, and despite the high duv at lower currents I do not judge the tint as disturbingly green. The tint at 10 A looks quite perfect.
So these numbers are from different LEDs?