LED test / review – Lumileds Luxeon MZ 5700 K min. 90 CRI (3V) – Finally! High CRI, High power, beautiful light

There should be no cross/donut if OP reflector is used, of course this reduces throw, but it still should be way better than any triple/quad. Gap between dies is smaller than XHP-50 or XHP-70, and should be similar to dedomed/shaved XHP-50.

I did some testing of this LED in a supfire L6 (26650 light with C8 head). I purchased the LMZ7-QW57 (3V 5700K) emitter from digi-key. I reflowed on a 20mm Tpad XP footprint MCPCB (I got it on the first try :sunglasses: ). With a fully charged 30Q I measured 11.7A by measuring the voltage across a 10mOhm shunt in place of the tailcap (this cell is old so the current might be higher with a new cell).

The results are a bit disappointing. I measured 69Kcd at 6.78m (with smooth reflector, reading taken at point with highest lux), and less than 2400 lumens OTF (ceiling bounce test).

A XHP-50 4500K 90CRI de-domed will do 2000 otf lumens at 6V and 5A (10A for the Luxeon 3V). So in this regard it’s actually quite similar. This shouldn’t come as a suprise as the Luxeon M and MZ are also from 2015. They aren’t new.

How do you like the tint?

Mine is the 70 CRI version. I would say the tint is fine. It is definitely on the cooler side but not noticeably blue like a cree 1A.

Ok, then it really isn’t that efficient. :frowning:

Does luxeon make a domeless emitter with a single one of these dies?

I considered upgrading my BLF Q8 with 4 of the HCRI MZ’s but realised something would probably melt if I tried!

Luxeon Z ES (German test here)

Thank you!

Looks like it wouldn’t work for a Q8, I misjudged the size and thought the dies were “XP-G” size.

Back to the drawing board. A 6V MZ in a convoy L6 looks like it might work!

They are basically dedomed XP-G size, very similar.

A 6V variant would definitely work in the L6. The only one that is not so great is the XHP-50 because of the rather high Vf.

I am wondering WHO will be the first lunatic to put 3 LMZ7-QW65/QW57s under 10507 with VTC5A and witness quickest step down/throw out of hand/deflow/melt optics in history :partying_face:

EDIT: I forgot about poor little omten 1288 :weary:

That would indeed be glorious! :smiling_imp:
I think a FETie switch would make sense :).

I wonder if there will be a donut hole when using clear optics and three LEDs.

Below ~8Amps per LED, there is no sense to use MZ instead of Luxeon V, and MZ is much less compatible with small optics.

Well about FETed switch I am not feeling a need for one. That would be making a whole built “sensible and safe” which by all means it is not. For the sake of care and longevity for sure but I would love to see omten in action :innocent: I am wondering the same about hole, especially with potential one inside of trousers pocket :smiley:

High-cri :wink:

I Agree with this one although I am highly concerned that if I decide to build one with S2+ in a month or so Lumileds will maybe release HiCRI Vs and then I will regret?

Carclo stated efficiency of 92% for 10507 with MZs.

Very interesting.

Yes, there would be a hole with clear optics. In fact according to carclo frosted gives more throw.
You can see beam shapes on the carclo site.

Yes, that’s actually just what I did after posting :wink: :person_facepalming:
They haven’t tested the Luxeon V yet, though. I know it wont be good but actual numbers and beamshots are still a nice thing.

LMZ9-QW57
Power at rated maximum: 14.40 W (peak: 16.72 W)
Efficiency at 4,800 mA: 93.4 lm/W (peak: 89.3 lm/W)

L1V1 led4power sample

Power at rated maximum: 16.42 W
Efficiency at 4,800 mA: 96.9 lm/W

If LMZ7-QW57 is about 30% more efficient than 90CRI verson it WOULD make sense to use it instead of V under 8A?

MZ would be brighter of course at any current, and Vf is crazy low,CC regulation would be maintained ~100% of time even at high mode, I'm just not sure how well it would work with small optics, total die size is bigger than tir entrance holes. Since I got 20mm mosDTP boards,I will build M1 with 5000K 80CRI MZ, just to see how they look in flashlight, XHP50.2 was total disappointment because of terrible tint/coronas.