[SALE] High CRI 90+ Nichias (ENDED)

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clemence
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Nice comparison Badhakker. I believe the 3 steps will be consistent across batches although greener. The best bin for those rosy Nichia lovers will be to selectively binning the 7 steps to get anything below the black body locus.

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badhakker wrote:
My test.
Camera Canon 6D, white balance 4000K. Brightness aligned during developing RAW. The same conditions for all pictures.

Skilhunt H03 TIR Nichia 219B R9050 sm40 Jaxman (aliexpress)
click

Skilhunt H03 TIR Nichia 219C R9050 sm40 Kaidomain
click

Skilhunt H03 TIR Nichia 219C R9050 sm40 3step BLF
click

Bonus: Zebralight H600Fw mk2 Cree XM-L2 4400K 75CRI
click
_____________________________________________________________________________________________

The results of the measurements:
Nichia 219B R9050 sm40 Jaxman (aliexpress) – 3600K + strong pink tint.
Nichia 219C R9050 sm40 Kaidomain – 3800K + weak green tint.
Nichia 219C R9050 sm40 3step BLF – 3800K + medium green tint.
Cree XM-L2 4400K 75CRI – 4000K + huge green tint.



Congratulations badhakker, you did a really good job of exhibiting the variety of 4000K Nichia tints.
To avoid having to scroll during comparisons, I put them in an animated GIF to bump the post, and compare the sequence you listed in another format.
clemence
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New sale thread with new Nichias: http://budgetlightforum.com/node/52244

clemence
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Find Texas_Ace member. Then look at his signature posts. He did many tests using the LED from this group buy and more. Should give you the big picture

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stormrider88 wrote:

Anybody has some pics comparison between the XPG3 4000K 90CRI and the Nichia 219C 4K 90CRI?

I know that the Nichia are usually more rosy and the cree’ more yellow (green for non high cri)… Any idea which bin is the most suitable for fog lights? I was thinking to mod this aluminum cubes with a triple and keep them around 1 amp each (which should generate around 750 lumens)

Can such a small tin handle the heat from 3 xpg3 run @0.8-1A?

Originally, they run 1 xml around 1.6 amp… Should be approximately the same level of heat? Any ideas?


I have both leds in triple flashlights and indeed the tints are different the way you described. But their spectra should not be all too different, so they should be as good for your purpose. The XPG3 triple is my bicycle light and it is excellent for that.
I would think too that such a cube will handle the 3A, if the mounting of the ledboard is done right, since a simple 18650 tube light already can handle that.

link to djozz tests 

“I used to think that top environmental problems were biodiversity loss, ecosystem collapse and climate change. I thought that thirty years of good science could address these problems. I was wrong. The top environmental problems are selfishness, greed and apathy, and to deal with these we need a cultural and spiritual transformation. And we scientists don’t know how to do that.”   (Gus Speth)

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stormrider88 wrote:
Do you use 4000k or 3000k on your bike? For my application, it would be mainly for heavy pouring rain and fog situation (the BajaDesigns are good, but the the Squadron which are 5000k are still quite glaring compare to car’s halogens…)

For the cube, once the ideal amp/V is set for the triple, I will fill-in with a mix of epoxy/arctic (circuit will separated) Moreover, the wind during driving should help to cool it down…. I never handle a triple, so, not sure about the heat dispersion…

I used 4× 5000K 9080 E21A @350ma for my scooter. The OEM was 6500K low CRI Stanley LED.
Most often glaring is produced by non road legal headlights with no sharp cut off. In my case I’m lucky to have a very good headlight reflector to begun with.
But indeed cooler temp irritates eyes more than lower one.
More LED with lower current each will be more efficient (cooler) than single high current LED.

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I use the 4000K 90CRI XP-G3. The heat dispersion will be more than fie in that cube, as long as the leds are on a DTP copper board and there is a sufficient connection for the heat to get to the shell of the cube.

link to djozz tests 

“I used to think that top environmental problems were biodiversity loss, ecosystem collapse and climate change. I thought that thirty years of good science could address these problems. I was wrong. The top environmental problems are selfishness, greed and apathy, and to deal with these we need a cultural and spiritual transformation. And we scientists don’t know how to do that.”   (Gus Speth)

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My scooter also don’t use any kind of heat sinking, enclosed in an airtight plastic casing at that power level. Just plain non DTP MCPCB (generous double sided copper pour)

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stormrider88 wrote:
Sounds great… Thanks a lot for your advises guys!

>Clemence? I am from Malaysia, so we are kind of neighbor Thumbs Up

Do you sell only bare leds? You still have some 219C in 3000K @90CRI?

http://budgetlightforum.com/node/52244

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