[GB ended,discussion only] CRI > 80+ NICHIA 2000K-6500K [E21A/219B/219C/319A/144A/757GT-F1(Optisolis)]

Ai, I hoped that there would be no reason to join your third round of Nichia's Clemence, and you just smashed that hope. I'm in for the sw40 :-(

Sw35?

Hmm, I feel bad I smashed itā€¦
I also got some 3500K (sm355) Ra8000 319A for you here. Delivered much too late earlier. The 3 steps 319A is surprisingly 30% more expensive even itā€™s only Ra8000

- Clemence

My stash of leds will get to a next level once again.

I may not even bother building them in lights anymore, just keep them hidden in a small box and just look at them every now and then. Nobody will know! :expressionless:

I use most of my surplus LEDs to lights up the garden, the streets close to my house, even the sewer in my front yard. Still waiting for Sedstarā€™s package for the 4500K XPGs.

Have you tested any of the LEDs?

Just got chousterā€™s package in yesterday, so no. And I feel that Texas Ace has has already shown what the 319 can do, so there are no leds atm that Iā€™m planning an output test on.

Yes, his test was great :+1: . He did a great job.
But, I will need to test several special PCBs later. Can you help me?

Ouch. Iā€™ll need to get sw40.

Geez. Iā€™ve never chased new bins around before these groups buys.

sure!

Weā€™ll try to be better next time. No confusing reservations, long wait time, etcā€¦.
Hopefully we can get you less than 7 days delivery service after whenever you paid the orderā€¦ā€¦worldwide (or at least in USA, Asia, and Europe).
I will try to test all the LED to Maukka first for less guessing and post purchase disappointments (it feels bad on my ends you know :frowning: ).
Still trying to get cheaper pricing by collaborating with some big manufacturers hereā€¦.

And to make everything much simpler, only one order page/front page for all areas.

Cheers,
Clemence

Yup, you made it easy for me this time ā€” in for sw40 9080sā€¦ :slight_smile:

Hereā€™s the data for the following emitters (links to a screenshot with lots of CRI data measured from the hotspot):
NVSL219B-V1 sw45k
NVSL219CT sm273
NVSL219CT sm303
NVSL219CT sm353
NVSL219CT sm403
NVSW219CT sm503
NVSW219CT sm573
NV4L144AME sm453
NV4L144AME sm503
NV4L144AME sm573

219B and 219C were measured at 700 mA, 144 at 1400 mA.

I have tabulated the results using both a diffuser (Convoy) and a reflector (Reylight Pineapple one for the 219B/C and Nitecore TM03 one for the 144)

All the tints from the hotspot with a reflector:

219B/C from the hotspot and midway through spill (very small tint shift):

144 from the hotspot and midway through spill (clearly a larger shift):

Superbly neutral tints from all the emitters. The 219B sw45k R9080 is clearly more magenta but in real life itā€™s not bad, makes for very vivid colors (high TM-30-15 Rg index). Highest ever CRI Iā€™ve measured from the hotspot of an led: CRI (Ra) 97 and R9 97.

The 144 are also very consistently amazing. Just pure white goodness. Even though the color temp shift is higher than on the single die emitters, the tint stays at the black body radiator line. Diffused they are absolutely perfect. With a reflector I measured significantly cooler color temps (about +700 kelvin) from the hotspot, but that doesnā€™t matter if you know what youā€™re getting.

I havenā€™t put any of these to a flashlight yet so cannot comment on the real life applications, but so far Iā€™m very impressed.

Thanks to clemence and chouster for sending these!

Great results, maukka! Thanks a lot for your measurements, very helpful!

Absolutely fantastic results.
Thanks maukka!
I really want to get some of those R9080ā€¦

GREAT thanks Maukka!! :laughing:

Looks very good. Especially the 144AM. I wasnā€™t wrong about them
Interested in testing the 319As and NVSL219B-V1 sw40? Iā€™ll ask Chouster to send them to you later

EDIT: Iā€™m not a fan of 219B tint, but I never thought the CRI result is super amazing. Now I know why this one is so special for you guys.

- Clemence

Great data maukka!

Did anyone yet put a high CRI 144A in a flashlight with smooth reflector yet? My single sample produces an ugly yellow spot in the center of the hotspot, but it has a slightly uneven phosfor layer, perhaps otherā€™s leds are better?

OMD Jos, you use that egg yolk in your flashlight? :person_facepalming:
Iā€™ll get you a normal one later. Which CCT? Let me know

Cheeers,
Clemence

Is there a common way to test the LED without reflowing it? I do not want to start my reflowing career with this emitterā€¦ Power supply is available.

No no, donā€™t worry, this is another led with a much better phosfor distribution. But even a slightly uneven distribution with the phosfor just a bit thicker (=more yellow) towards the center (my led) already produces the effect in a smooth reflector (have not tried OP yet).

Ahhh, I seeā€¦
Yes, smooth reflectors arenā€™t the 144Ax mates. I tried them in my predatorā€™s reflector, many narrow TIRs, big reflectors, etcā€¦always a slightly yellow center spot. Fixed easily with even very mild 5 degree diffuser. All medium, wide, and diffused optics worked great. Iā€™m sure OP reflector will do OK since this the artifacts in 144Ax are much less problematic than XHP50

Very nice test, thank you Maukka!

Results of the 219B-V1 R9080 are stunning.

But all LEDs tested here perform well above specs. 219C sm573 even achieves R9080-specs, sm503 very, very close.