LH351D 4000K 90cri interest study.

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AEDe
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LH351D 4000K 90cri interest study.

Hello!
I found source of cheap 90cri LH351D 4000K
SPHWHTL3DA0GF4T0Q6.
It is new 3535 Samsung led with Max current 3A. It can work with carclo triple optics.
So I can provide opportunity to buy for 1.6$
Could it be interesting for someone?

Guys from superfonarik.ru helps with measurements.
LH351D 4000K

LH351B 3000K 90cri
XP-G3 5700K 90cri
The last 2 LED also very cheap ~0.5$ and 1$ respectively.

Edited by: AEDe on 02/14/2018 - 12:24
Virisenox_
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According to this sheet, the Q6 flux rank emitters only do 764 lumens at 3A. That’s only 40 lumens less than the equivalent 219C according to this test. How’s the tint?

I’m much more active on /r/flashlight.

AEDe
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Virisenox_ wrote:
According to this sheet, the Q6 flux rank emitters only do 764 lumens at 3A. That’s only 40 lumens less than the equivalent 219C according to this test. How’s the tint?

I bought a couple of pieces.
Exact bin was F2T7Q2. I found it less greenish than 219c 4000, but I plan to measure it in sphere to be more strict.
Barkuti
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Subscribed. 

Let us know if you decide to grab a nice bunch of them, pricing and shipping costs.

 

Cheers Party

djozz
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Yes, I’d be interested but a bit anxious of the tint and beam profile it produces. The 90CRI 4000K LG led that Jaxman used recently was very green and caused an ugly tint shift in the various optics (link to maukka’s test), and I always thought that Samsung and LG were very similar. But if you say the tint is as good or better than the 90CRI 219C, and if you could find out that the tint shift when used in a flashlight is not bad I’m convinced I would like some for that price Smile

AEDe
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Barkuti wrote:
Let us know if you decide to grab a nice bunch of them, pricing and shipping costs

Now I try to decide with quantity.)
Pricing and shipping will be 1.6$/pcs and 5$ (with tracking number)

maukka
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djozz wrote:
The 90CRI 4000K LG led that Jaxman used recently was very green and caused an ugly tint shift in the various optics (link to maukka’s test), and I always thought that Samsung and LG were very similar.

At least the CRI70 5000K Samsung LH351D was good with a suitable reflector. But it wouldn’t be the first time when a higher CRI and lower CCT emitter would be worse…

Billy X
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I’m interested.

Barkuti
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F2T7Q2 bin. T7 refers to the chromaticity coordinates, about over if slightly below the blackbody locus, and a tad less than 4000K. Shouldn't look greenish at all.

 

Cheers Party