Cree XM-L's available soon

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Don
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I was thinking more of the simplicity and reversibility of the mod if unsuccessful. I do have a not very well performing MC-E dropin from DX that can only do 4.2V and only does 270 lumens at best. An XM-L in that would have to be better with about the same life of a bit under an hour from an 18650. If that works out then I'll probably transplant the LED into my Aurora AK-P7 which does about 430 lumens but will be more fiddly to swap the LED.

 

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

brted
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I'll just get an empty drop-in and KD's version of the 2.8A Shiningbeam driver. Might even try a smooth reflector, though there's no way a generic drop-in is going to be optimized for this LED. Any good multi-mode 2.8A buck drivers? I have a 2x18650 host looking for a drop-in.

old4570
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Apparently Cree is shipping samples ATM ...

 

Actual shipment of emitters [ officially ] 23Dec ...      So   .....  Also ATM cutter has 20mm bases , but no 14mm [ so I was told ] ...

Want to play , looks like 2011 ... Unless the North Koreans lose the plot , and WW3 starts ...   Wont that be fun , its been a good 50 years since a world class conflict ...  

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

SPAMBOT
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South Korea will beg the US for nukes to use as a deterrent, Japan will probably also consider nuclear deterrence. China do not want more nukes in the region so they will put pressure on NK if they need to, but only if they need to. And I guess NK are doing this because they want more aid or because their new leader to be wants to establish his power or something...

 

BTW, the XM-L is now added to the brightness reference list over at dx. Enjoy : )

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znmzdx
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vincenthooi wrote:

i dont see any

znmzdx wrote:

Cree XM-L T6 test from China :  http://www.shoudian.com/thread-163941-1-1.html

With many picture!

You might need regester it if you want see this pictures.

My shop on aliexpress , welcome to visit my shop !

antib
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Ohh no....

Not enough the HKP delays, now "Korea",..... WWIIISmile

I change my mind. I don't  make any P60 from R5.... I wait the XM-L.
I read the XM-L view angle will be 125 degree. Will this good for throwers? (Upgrading e.g. Tiablo A10, Solarforce MMP-1, HS-802 etc.. ) XP-G was not as "great" for throwers.... I hope XM-L would be, but this 125 degree....i don't know?!
For P60 will be good. R.I.P MCE, P7, (donut hole) and SST-50 +5ATongue out

old4570
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125 deg is the same as the XP-G , what might be better ?  Is the fact that the emitter is larger , filling more of the bottom of the P60 reflector , hopefully a hotter hotspot ?  wont know till some one tries it ...

Butt , the power !   

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

antib
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XR-E view angle was 90 degree. XP-G and XM-L 125 yes.
There is a connection between view angle and emitter size, that
specify the led will be good for throwers. Sorry i can't describe this, becouse my english is poor.
You have right, i like the tight hotspot.

I will to try, if XM will be available.  "The proof of the pudding is in the eating"


I was only wondering your opinion, from data that we now already know from the XM-L. 

I thought it may be inferred from the XM-L specification. I understand the flux vs. current etc., but those optical  diagrams are not clear to me.
That's all. I'm not an expert, only a amateur. 
I agree with you, the luminous intensity (power) at lower amperage will be good! We will not need 5A-10A drivers. And the lower thermal resistance also will be good.

ezeqdb
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It would be great to put 3 XM-L in a module like this one, and drive them at 3A each.. I thought about the one with 5 leds but the reflectors are smaller, and it wont have any throw or runtime..

http://www.dealextreme.com/details.dx/sku.9358

"no le temo a la oscuridad, la oscuridad me teme a mí"

znmzdx
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Some pictures of Cree XM-L , please go this page for detail : http://forum.lightake.com/Topic.aspx?BoardID=13&TopicID=167

My shop on aliexpress , welcome to visit my shop !

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how2
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Nice pictures in that thread over at Shoudian. The XML apparently has three bond wires and looks just like a supersized XPG (not surprising).

The XML seems to hold its own against the SST-50. It is a bit less bright at half the drive current, but that is to be expected. Can't read chinese so I don't know if the same optics were used in the comparison. Also, a comparison using the same drive current would be better.

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how2
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Can someone put it simple terms the output in lumens and heat issues Compared to other leds like P7 MC-e SSt 50 and 90.

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Cree XM-L compared to:

SSC P7: XML has more output, a tad less heat, cheaper, no cloverleaf and more intense hotspot

Cree MC-E: XML has more output, produces a tad less heat, cheaper, no cloverleaf and more intense hotspot

SST-50: XML puts out more light at same current, lower maximum current, less heat, much cheaper, more intense hotspot

SST-90: XML puts out same amount of light at 3A but more at lower current, has lower maximum current, less heat, much much cheaper, much more intense hotspot

 

Heat issues is very similar to MCE/P7, though it should be a bit more tolerant of high currents (due to lower thermal resistance).

The XM-L is basically two XP-G's melded into one big LED and its cost is about 1/3 that of a SST-50.

 

Luminus offerings can take more power so at maximum current they put out more light, that isn't a good comparison though.

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agenthex
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SST-90: XML puts out same amount of light at 3A but more at lower current,

 

I don't think that's true.

 

In any case, the way to compare is just look at the current (which is essentially power in this case given the very simlar Vf's) to flux graphs for the emitters. The general slope of the graph is the bin number, eg Q3, R5. The way to think about comparing these emitters is to normalize them to an approximate bin standard (let's say cree xp-g's), with a max current/power rating.

 

For example, a R2 xp-g is about a R4 xr-e at 1A (~300lumens), but goes up to 1.5A instead instead of 1A max. A sst-90 medium bin (WM) is in this range but goes all the way up to 9A. Similar for K bin MC-E. The xm-l has better efficacy at this lower power, like S5 on the xp-g scale (about 50% better than bins discussed, about double of a q3 xr-e, and goes up to 3A).

 

If you want to consider power instead (I used current to normalize since most good drivers regulate on current), a xp-g/xp-e/xml is going to be slightly cooler due to lower Vf.

 

--

To summarize, the xm-l's are somewhat better than even top bins of quad die emitter without the gap. It's basically a significantly more efficient SST-50 that costs less.

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znmzdx
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pictures have fixed ,please visit it again :  http://forum.lightake.com/Topic.aspx?BoardID=13&TopicID=167

My shop on aliexpress , welcome to visit my shop !

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agenthex wrote:

I don't think that's true.

 

You are right. I was a bit too optimistic. Cry

I'll just post my calculations, it's a waste not to.

 

For Luminus SST-90:

WN-bin 850 - 1000
WM-bin 1000 - 1200 @ 3.15A


95% flux @ 3.0A gives:
WN-bin 808 - 950
WM-bin 950 - 1140 @ 3.0A 3.25Vf 9.75W


For Cree XM-L:
T5-bin 260 - 280
T6-bin 280 - 300
U2-bin 300 - 320 @ 700mA


325% flux @ 3.0A gives:
T5-bin 845 - 910
T6-bin 910 - 975
U2-bin 975 - 1040 @ 3.0A 3.30Vf 9.9W

 

Now we just need Cree to release the U2 bin.

Info obtained from  SST-90 and XM-L datasheets.

 

Anyway, who would buy a SST-90 and drive it at a measly 3A? Laughing

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brted
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KaiDomain comes through again with a XM-L for $12.32. Sadly, it's on a 20mm star.

 

http://www.kaidomain.com/ProductDetails.aspx?ProductID=11102

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ezeqdb
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I just ordered one XML in 20mm star for my trustfire f15 (and replace the P7) Smile

"no le temo a la oscuridad, la oscuridad me teme a mí"

Don
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ezeqdb wrote:

I just ordered one XML in 20mm star for my trustfire f15 (and replace the P7) Smile

 

That should work well - and give quite a lot more light.

 

I'd not noticed that MRV clone before.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

ezeqdb
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" I'd not noticed that MRV clone before."

 

This is a great light, great heatsink, OP reflector and 3 modes ( 3A - 0.15A - strobe ). Some pics and video-beamshots here http://forolinternas.com/viewtopic.php?f=5&t=569&p=4926

"no le temo a la oscuridad, la oscuridad me teme a mí"

old4570
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I ordered 2 emitters on 16mm Basses of Ebay ...  

I need another P60 host , well , I dont really ...  

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

how2
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UDO
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Oh no, now I just have to order it at this prices Sad  I 

how2
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UDO wrote:

Oh no, now I just have to order it at this prices Sad  I 

 

what price did you pay?

Don
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What Lambda has done with his Varapower lights and an XM-L

http://flashlightnews.net/forum/index.php?topic=2398

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

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Also available mounted on 16mm PCB board: http://www.lck-led.com/p853/Cree-XLamp-XM-L-Cool-White-LEDs-w/16mm-Board...@3A/product_info.html

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