Where to buy Nichia Optisolis 757 6500K SMD3030 LED ?
In my search for Optisolis, Ledrise.eu is the only place that I could really find. They’re quite pricey and the shipping, depending where you’re located, is also expensive. So, I never did order any.
The problem with ledrise is, that they require project details to ship any quantity below LED packing quantity (1 reel). Another user and I asked them for some LEDs, and they refused to sell us samples since “LED testing and comparing including reviews” is not enough for Nichia as a future project. Ledrise has some LEDs in stock, including Optisolis. But for other LEDs like x19 ones, forget that.
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Oh, I didn’t realize that. It sure would be nice if Nichia would make it easier to purchase their emitters.
I still would like to get some Optisolis, but I guess I’ll have to settle for SunLike and Thrive emitters instead. At least those are easy to come by.
Yeah, I don’t get why they don’t want to sell emitters to everyone. Maybe that’s a kind of mentality with them.
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so no Optisolis for hobbyists then 
And other Nichia emitters as well.
I guess, I can only go Sunlike or Yuji .
I’d also suggest Bridgelux Thrive 2835. They’re available in 3V 0.2W, 3V 0.5W and 9V 1W versions. I’ve used the 9V in a few projects, and I have been quite impressed.
In my less than precise testing they seem to have slightly better color rendering than the 6V 1W SunLike I’ve also used. However, the tint is little further above bbl than the SunLike.
Where do you source the BridgeLux Thrive emitters? Also, where do you find a 9V driver?
It seems that for these violet-pumped LEDs the higher-voltage variants are always rated for more power. Why is this the case? With white LEDs offering multiple voltage variants, the power ratings are generally the same. Do the higher-voltage violet-pumped LEDs cram more violet dies under the same package?
Digikey.com has the 9V Thrive. For my 12x mule I am using a Convoy 12V driver, as min Vout is ~7V so it works with the 9V emitters. The triple 9V Thrive S2+ I’m building is going to use a modded 17mm 6V 4A driver. I’ll have to change the sense resistor and another 0402 resistor to set the Vout a bit higher.
Yes, the 9V Thrive have three dies, and 6V SunLike have two dies. Not sure why the wattage able to more than double by adding a second die. Bridgelux claims no violet chip in the Thrive emitters. They call it “Broad Blue” which appears to dual blue pumps, at least looking at the spectrum spikes.
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i tested some of the 6500K cob Thrives and the one I got has a dUV of -0.002 and another one at -0.004. it appears slightly yellowish-green tinted when viewed with the naked eye on a dark room but when compared side by side to actual daylight, it is actually redish or has magenta tint as predicted by Opple G2.
So sometimes, a yellowish-greenish LED is NOT actually above BBL at all. In reality, it can be also a negative duv LED below BBL, in which to the naked eye it appears yellowish-greenish. The only way to confirm if it is + or - duv is to shine its light on a white target side by side with actual daylight
I have a 5000K Thrive V6 HD cob for a work light at my soldering station. It was above bbl with my LM3, but I have yet to test it with the ColorMunki or Hopoocolor.
I just put together an S3 triple using 4000K 1W 2835 Thrive emitters and 10508 optic with dc-fix. Duv is a bit higher than I’d like, but the color rendering is tough to beat.
Hold my Nichia Optisolis Quad…
Convoy C8 with 3000K and 5000K Optisolis
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I really need to pickup some Optisolis. Too bad they’re like hens teeth.
I’ve always read about not mixing emitters with different forward voltage. Is there any issues mixing the 3000K with it’s lower Vf compared to the 5000K higher Vf?
the LED with the lower Vf will hog your current supply and the one with the higher Vf will receive less current.
That’s what I thought. I had talked to Clemence a while back about a 5000K/4000K Optisolis mix and he advised against it since the 5000K Vf = 2.9V and the 4000K Vf = 2.76V.
A bit late, but I sell them.
If you are still interested, PM me.