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

I hope I responds right this time. Please check my post again. I meant same diameter overall optic, not the individual TIR lens used by each LED.

- Clemence

Oh. I see. Yes, that’s clear to me now.

Today, a Skilhunt H03 headlamp's emitter replacement has been completed. Clemence, thank you for sourcing the E21A for us, designing the MCPCB, and your reflow service :THUMBS-UP:

The stock XM-L2 emitter is now replaced to 4× E21A sm503-D220-L2-R9080.

Steps, what I have done:

  • The MCPCB was a little bit filed around, but then it was easy to fit in
  • I replaced the original thermal grease with Arctic Silver Ceramique 2 - I've read, that it is non-degrading over time
  • The configuration was finished by soldering the additional wires according to the figure
  • Reassembling light - optics was an easy fit over the quad array

I am generally very happy with the result, maybe I got a bit more lumen drop compared to the stock one, than I expected. However, the beam improved a lot!

With the stock emitter, I have a blue/purple ring in the far spill, which became unnoticeable as I close in to the center of the beam, but when I reach around 20 degree, it starts having some green/yellow hue (egg yolk effect).

Now with 4×E21A, I have an astoundingly even tint across the whole beam! The beam became even more floody, as the hotspot became much less pronounced, and it became square shaped, but just barely noticeably.

I think, I will get a measurement on the optic's physical dimension, and look for a better replacement. I suspect, that the internally reflecting part of that starts not enough close to the base of the board - I have seen similar problem reported for an Armytek headlamp.

In the next sample of Skilhunt H03 (which will be ordered in a few days), I will use the sm203-D160-R9050 set... I am awaiting that with excitement :-)

Nice Adam, glad you like it. In general the hotspot will always gets bigger with this quadtrix, which I find useful for headlamp application.
Beam shot(s) please =)

- Clemence

I placed the requested beamshots in an imgur album, please, take a look :-)

Beamshots available here

I added a Jaxman E2L (with default optics) to the comparison, just for further reference. I slightly decreased contrast of the images to let better examine the beam patterns.

Additional experiences:

Color rendering is lovely, to say the least. Some greens/yellows seem to be a little bit less outstanding comparing to what I have experienced with 5700K or 5000K 219C emitters, but the deep oranges and reds are literally popping out - I have never seen anything like this even with 219Cs. Cyans and deeper blues are also very good. On turbo, the light tint acquires a very slight additional purple/deep blue punch. While that is not bad at all, I still prefer to use the level one below turbo.

Regarding the low Vf: I can use a Panasonic NCR18650B button top in the emitter replaced light without any problem to get the most of mAhs out. While I noticed dropped lumens at turbo with the stock emitter even around 3.85V, I just checked the battery to read 3.46V, when I still didn't notice serious lumen drop (was able to fill the battery with 2335 mAh charge then).

I examined the stock optics, and had to admit, that there seem to be no serious flaws regarding optical efficiency, just because the emitting area is bigger, the candela/lumen ratio dropped further. I tried to find out, that the supplied optics whether has 45 degrees beam angle, or 60 degrees, but it is hard to tell, as there are not really any hard boundaries in the beam. Regardless of that, I will look for, and purchase optics with 30 degrees or less beam angle, just for any cases I would need bigger throw capability :-)

UPDATE 180517:
For those pre-orders the High CRI Tiara C1 Pro (and some Wizard), please be patient. I’m still in the making. Below is one of the problem I’m facing:

Precise drill those VR16SP4 was not as easy as I thought. The ultra hard ceramic dulls my HSS-Co end mills in a single pass!

- Clemence

Question about Nichia 219B SW45K R9080 & SW40 R9080

Do you guys think there are still demands for these LEDs? If yes then I’m thinking a committed group buy at reduced BLF price to get the last of it’s kind. These LEDs are discontinued already (you won’t find them at Nichia’s website anymore).

Please let me know….

- Clemence

I’d have at least some sw40, always wanted to try them. The number depends on the price. Thank you Clemence!

At best I can get bring them at USD 2,5/pc Worst would be USD 2,7/pc. We’ll see if there’s clearance sale from Nichia.

- Clemence

I always wanted more sw45k, can I buy it? :slight_smile:

Not yet, my friend still checking it’s availability

Clemence, have you ever tried mixing the yellowish sw40 and pinkish sw45? Would expect something quite neutral

No, never. But someone did that. I guess that was Jensen567

- Clemence

Thanks for the info, please let me know if it becomes available.

Anyway, any info when 219c 5000k will become available again? Thanks.

I put a 219B SW45K R9080 into a Zebralight H51w and it immediately became my favorite tint.

I’d buy a few more for sure. :+1:

I am in.

OK thanks for the input. Here’s the GB thread: [GB ended, news update only] Last batch of 219B sw45k R9080 and sw40 R9080

- Clemence

I tested the single E21A 2000K output. I assume this is the same D160 bin Clemence has for sale on his site and not the lower D140 even though it didn’t quite reach 160 lumens at 700mA. The emitter has seen some hard driving though.

It’s D160 rated. The same LED as in the store. It has the thickest phosphor layer off all E21A. High CRI in candle CCT light comes at a price - very low efficiency.
That 157lm at 700mA still within the margin of error. D160 rated at controlled 25C Tj.
This is inline with Djozz built using the same 2000K E21A

- Clemence

Has anybody shaved/de-domed a 219C 5000K R9050? How is the tint (yellowish/greenish?)? I have had a few of them laying around for my Noctigon Meteor for a while now, but I’m not so sure. It currently has de-domed 219B-V1s with 5000K. They are quite nice, but very inefficient.