Here’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 it’s not bad, makes for very vivid colors (high TM-30-15 Rg index). Highest ever CRI I’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 doesn’t matter if you know what you’re getting.
I haven’t put any of these to a flashlight yet so cannot comment on the real life applications, but so far I’m very impressed.
Thanks to clemence and chouster for sending these!