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

I have not even gotten my leds yet, and I’m already planning what leds to buy on the next sale.

I’d say 6 sw45 9080, 6 sm503… and I’ll leave it at that for now.

I suppose we can’t actually make reservations yet, though, can we?

Also, thanks for all the tests maukka. That r9 value of 97 is insane.

When you will receive these 9080 sw40 LEDs ?

I really have no idea :frowning:

Just got a-not-so-pleasing info from Nichia:

- No stock for all Ra9050 and Ra9080 219B/C series. The lead time could be anytime between 1,5 - 2 MONTHS!

  • Nichia headquarter decided to (temporarily?) stops the sw45k production. Don’t know why. 4500K has been a rare CCT in Nichia these days. My earlier sm453 9050 144A purchase delayed by almost a full month. Then I only got sw45k 9080 219B in limited quantity.
    I’m still trying to get whatever stock left there.

- Clemence

Correct, reservations can not be made until the new Group buy thread is posted and then it is on a first come, first served basis.

A link to the new thread will be posted in this one I am sure.

+1 Correct!

Welp, now we wait a few months for new stock on the 9080 219b, and some sm503 219c.

After seeing maukka’s results, the sm503 219c could almost be binned as 9080. And the results for the 219b 9080 are nothing short of spectacular.

Is there any data or cri tests for the 319a emitters?

I am pussled about that if you mean cooler than the spill. I would have expected the opposite?
Is’nt the hot spot supposed to be warmer as the reflector collects the (sideways) rays that have passed through most yellow phosphor?

All the Nichias I have tested have a cooler hotspot than spill. Cree is opposite. What I meant that the difference was larger than with the 219 series. This might have something to do with the two stage reflector of the TM03 (which also hides any egg yolk effect djozz also mentioned). I tested a 144 series led with a normal reflector (from the X6) that produced the warm yellow center.

Thanks Maukka, interesting viewpoint.

BTW have you noticed that the sm403 turn rather green at high currents (specs), the opposite of the other smxxx and of Cree diodes.

Here’s a 219C CRI90 sm403 on different currents in a Thrunite TC12. Doesn’t change much in tint.

Looks like proof of pwm

No PWM on the Thrunite.

In that case: wow for the Nichia 219C then! :open_mouth: :slight_smile:

I tried. I also have an ugly yellow spot in the center.

144A yellow spot fix: any mild diffuser will do, OP reflector, colour mixing TIR, or any TIR specially designed for 144A (some Ledil)
The wider the beam angle of the optics/reflector the less the yellowing effect.
Unlike XHP50, sanding or roughing the lens dome has minimal effect. Only enlarge/smoothen the edge of the hotspot. I tried it
Slicing the dome will most probably works (plus more throw and slightly less output).

I think it is much. To compare with it, take the D50 point.
If I use x,y= 0.3455,0.351 for this point it gives in my calculations CCT= 5002 K and an offset from the BB curve of 4.6 CIELuv. This offset can be clearly seen as greenish. (1 CIELuv is about the least color difference that can be seen as you know).
Your low to high distance I would guess is around 7-8 CIELuv. That amount I usually correct with a Lee filter “279 Eighth Minus Green” (not so usable here as tint changes).
I only brought this up because I made a S2+ with 219C CRI90 sm403 with PWM at 2.8A and it looked surprisingly green until I lowered the PWM current to 700mA. The specs also shows that tint shoots up in y value with current, somewhat compensated by temperature but only the high CRI model has this speciality.

Also remember than even 3 steps grouping is still an ellipse, no a point

In the data sheet, not all grouping ellipses follow the BBL symmetrically. The cooler temp slowly leaves the BBL as the temp raised. The 573 lower part ellipse barely touched the BBL. This risky balance is what makes up for better efficiency in 219C I guess.
For those who really don’t want even the slightest green sw45k 219B is the best bet, far away below the green zone. If you still want the the 219C, stick with the 3 steps and no higher than sm403.

May be, you know, when 219C (9050 3-step) sw40 & sw45 will be available ?

The SM403 4000k looks absolutely beautiful out of this C8-Triple!

The only Green I see is when it’s OFF!

:smiley: :+1: