Gentlemen,
Since the original "emitter test results" thread was getting a bit crowded, I thought I'd start a new one here for the Cree XP-G 2, and future emitters. Test setup was exactly the same as all prior tests in the previous thread, so I won't repeat that info here. Exact emitter tested was a Cree XP-G R5 1A mounted on a 20mm star from cutter.com.au. A test with the xp-g 2 directly mounted to copper will follow, but this test is a better indication of what one can expect using a pcb mounted emitter in a flashlight.
Without further ado, here are the pertinent graphs, including one for vf and another comparing it to the original xp-g:
This is the first test in which I also recorded the vf, which I found exceptionally low. Hope you folks find this useful (and I hope it doesn't get buried in the annals of old DIY threads)
-Match
Updated 11-12-2012
Here are the much awaited results of the Cree XP-E Q5 green, XP-E2 R3, and the super sized MT-G2 6v.
This emitter was purchased when asked by a gentleman to make him a green tinted hunting light. As the graph indicates, it's no powerhouse, but when combined with a C8 smooth xpg reflector it throws very well...which is the whole point. Instant turn-on at 1600ma was 244L, so there is some gains to be made with direct to copper mounting. I'll post beamshots of this light in another post
Next up we have the new Cree XP-E2 R3. Again, by single emitter standards it's not going to upset the xml in total output. What it does do however, is offer similar performance to the original xpg but with a much smaller die size, therefore increasing throw considerably. Where I see this emitter shining (ya, I know) is in small AA or AAA lights where one wants higher lux. My plan for one of these is to swap it into a Quark AA Turbo light, since the max driver output is ~800ma. Should make for a noticable jump in the already high lux. Btw, instant turn-on for this emitter at 1800ma was 414L...so again, very real gains in direct to copper mounting.
Here it is, the newest big boy from Cree. The MT-G2! I think this is the first emitter I've ever picked up fresh out the package that made me just started giggling like a schoolgirl after her first kiss... Wow what an emitter! The specific bin code for this particular sample is MTGBEZ-00-0000-0B00P050H 5000k Cool White. The disturbing large amount of lumens not withstanding, I have to say this is the prettiest tint I've yet seen. Maybe my eyes were a tad singed during testing, but holding up the reflector to the test bench really whetted my appitite for starting my next mod with this emitter. So, back to the chart above... Yup, that's a lot of light and a lot more light than the fabled SST90 at similar power levels. The king is dead, Long Live the King! And for those curious, instant turn-on was well over 3,100L so direct mounting this beast to copper would be a no brainer.
Definately look for a build involving this one.
Well, that's all for now. Hopefully this weekend I'll have the results for the nichia219 done and posted, as long as I don't get distracted by Plants vs Zombies (which caused this delay....).
Thanks for reading,
-Match