In my experience thusfar this is what is going on:
Cree had developed a pretty good new die/substrate combination, and put that on the market in different sizes, first as xpg2, xml2 and xpe2, now the same three sizes in more compact packages. Those are all the same dies: those that came on the market almost two years ago. The surface brightness of this die (output/mmsq) has the same limit for all three sizes (thanks to direct-bond copper boards that limit can easily be reached without overheating the led), although in the xml2 that limit is still not reached because the bond wires (that are the same thickness in all three types) blow before that output is reached.
I will be excited again when a new breakthrough-die comes on the market.
We’ve been over this in the thread, but it’s just a smaller footprint. Cree is advertising it as a more flexible solution due to the size. The term Cree is using for this is OCF - Optical Control Factor. Read about that here.
Gasoline? Really? Nah.
I just been trying to roast them off with a blowtorch. Made some delicious cree s’mores! Just no good de-domes as of yet. I shall not be deterred!
IS has them, I ordered some... I'd be surprised if they behave any better than the XM-L2, the smaller footprint should make thermal transfer a bit worse I guess.
Yes and as already discussed (maybe it was in a different thread), a dedomed XM-L2 (which has the same die as the XP-L) has a beam very similar to a non-dedomed XP-G2. So in the 20mm triples, a dedomed XP-L should work about the same as XP-G2 in the same setup, just with moar lumenz.
But it's the same old XM-L2 die stuck onto a XP footprint substrate, how does that do anything to alter the efficiency? Shouldn't behave any differently than a dedomed XM-L2.
I haven’t checked the site or anything but I see some conflicting information
1) 1000lm @ 10W
And
2) 200lm/W
??? Not sure what’s going on here…
Am I working this out wrong? 10W should be 2000lm not 1000?
But from what I’ve gathered, in stock for because of the smaller dome they’ll throw further than an XML2. but De-domed it will be similar or worse due to the smaller heat pad.
I guess only one way to find out… We need this emitter tested STAT
Cree is saying there's improved output of the XM-L2 by about 10% across the range of currents they publish. Unless djozz tests prove otherwise, I have no reason to doubt Cree's claims.
I expect dedoming to have the same effect as dedoming an XM-L2, which is a reduction in lumens. Fortunately that doesn't affect my plans in the very near future, and hopefully after that there will be updated Carclo lenses.
Made some delicious cree s’mores! Just no good de-domes as of yet. I shall not be deterred!