Cree XHP70 up to 4022 Lumens and XHP50 up to 2546 lumens - Multi-die leds.

can’t wait for beamshots of that. I assume the optic will do better at removing the cross/donut?

+1

There’s a $75 minimum order, which is good for about 40 stars. They’re due in this coming week, supposed to call me when they see em. I’m really into this so I’m willing to put the $75 on the table to get stars. I certainly don’t need 40 of em, and will sell off most if anyone wants em. Or use em as spacers in days to come if no one else buys em up.

The cross in the beam is gone. The pictures I posted of the modified Mirella? The Minnie has similar vertical fluting but it’s under an orange peel layer. Shiny the last 1/8 inch or so. But it’s sized properly to begin with and doesn’t take all the work I put into the Mirella. I’ll get some pics in a little while of both it and the Iris, charging up my little 18350’s for a lightbox reading so I’ll be able to see how it compares to the modified Mirella.

I still have a Fraen coming from Cutter, totally different way of dealing with it in the Fraen reflector. Couldn’t find the Fraen optic anywhere in the world.

They both come with black plastic holders, the Minnie’s holder already has an adhesive tape on the bottom. The Iris fits in the X6 beautifully without the holder…the holder is tapered at the wide end and would probably go in with a small amount of sanding at that leading edge, that would probably be the ideal way to use it. The large opening in the optic fully surrounds the entire die, sitting on the substrate without the holder.

The Iris is almost $10 from Mouser, the Minnie-M is a little over $5.

Ahhh, how could I forget to post this? 3550 lumens, up from 3298 with the Mirella. 3305 at 30 seconds. :slight_smile: And a nicer beam to boot! This is with Wights PZL driver, a 7135 regulated chip driver. I, uh, might’ve stacked a few extry…

Edit: It’s pulling 5.45A at the tail.

Here, try this one next. 4.3 degree spot http://www.ledil.com/node/2/p/14226

Just go to post #264 and save yourself time.

More to come...

3 to try for Maglites?

http://www.ledil.com/node/2/p/14142

http://www.ledil.com/node/2/p/14248

http://www.ledil.com/node/2/p/14286

Wow you certainly don’t hang around when it comes to testing new emitters in various configs. Cool to see the emitter in so many different setups already.

That minnie m reflector looks like a great option for getting smooth flood beams out of quads.

The Seanna is huge, I’d already looked hard at that one.
The Mirella works well, I have it cut down to fit the 35mm X6. :wink: Pics are up above somewhere.
The other two Mirellas you linked are essentially the same with different mounting mechanisms.

The Mirella would be a very good bet if fitment looks good for the available size. The only reason it is beat by the Minnie in my X6 is because I had to cut it down so much to fit.

Edit: Still trying to figure out if the Seanna would be a good stand alone, sticking out the front of a battery carrier. :wink:

The Mirella is a “system” reflector. Those last 3 links all refer to the same actual reflector, just with different accessories. It’s the Mirella S, the Mirella S w/ base (socket), and the Mirella S w/ base & diffuser lens (DL).

Here are the two accessories by themselves:
C13083_PF-SOCKET
C12479_MIRELLA-DL

excellent work! thanks for reporting and experimenting with this new emitter. i cant wait to see beamshots. if you could, could we see a comparision shot against the triple?

While we’re on the subject of the MIRELLA, note that it’s also got a “mixing lens” available - C13723_MIRELLA-RZL. The MIRELLA family page on Ledil’s website shows an example of the intended application for RZL at the bottom: it’s approximately a 10mm+ diameter circle of 16x Luxeon Z LEDs setup for 4-way color mixing.

With an XR-E they show a projected 30’ circle of light at 480M! Very tight, designed for long throw. Sweeeeeet!

Ledil Seanna

Nice find Wight. The possibilities and convenience are beginning to seem endless.

And I will raise you –29F actual temp. w/ –46 chill factor last Wednesday/Thursday when I was in Lake Placid, N.Y.!!! :open_mouth:

I knew someone from up north would 1-up me…

Expected top 28°C, real feel 33°C humidity is eleventy billion, chance of a shower.

Currently 22°C, humidity 98% at 6am.

I can guarantee Ill be having a shower.

lol!! ALL those temps. are still verrrrry cold!

No wonder you’re reporting such high output from these leds. You’re all living in a fridge!

What cooling concerns?? :wink:

I did output tests on a XHP50, and a XHP70 (and an MT-G2 once more, for direct comparison in the same set-up), all on DTP copper boards.

The XHP70 was a N2-bin 6500K led from Mouser, the XHP50 was an unknown bin led sample that Hank from intl-outdoor sent me to test (thanks Hank!), it looks like a neutral tint between 4000 and 5000K. The MT-G2 to compare them to was an M0 bin 4000K on a 16mm MT-Noctigon from intl-outdoor (because that is what I had in house). Here's the three together to show the sizes, note that the MT-G2 is a whole lot bigger, especially compared to the XHP50.

Let's start by saying that I do not trust the XHP70 output results below, it was a makeshift fit onto a 20mm XM-Sinkpad and I suspect that the heat path was not optimal and that that shows as a disappointing performance at high currents. I soldered three copper bits on the pads to widen the distance between the electrical pads to make the led fit. The reflowed result does not look pretty although the solder connections are good, without shorts from the electrical pads to the core.

The other two leds were reflowed well onto fitting boards, so I trust that these tests on them give their maximum possible performance. I illuminated the two XHP leds that I tested together with a 3000K XHP50 led from Mouser that I did not test with a 365nm UV-light. You can clearly see that the XHP50 led is a warmer tint than the cool white XHP70.

The test set-up is the same as during my XP-L tests, except that I used a different integrating sphere and that the ledmount cooling fan was set at its max of 12V because of the high wattage emitters at test here.

The expected outputs were larger than my integrating sphere could measure (3300 lumen), so for this test I used my work-in-progress-new integrating sphere that I have not fully characterised yet, that has a bigger range. From what I did measure it works fine, but it does not have the inner coating yet (just the bare sanded styrofoam). But because I'm comparing tints that are not miles aparts it should be ok (thread about the new sphere here). A snapshot during the measurements:

This is what I found, and it is interesting! (I see now that the chart title is missing 'egrating sphere' at the end). EDIT: by request of RaceR68 I improved some chart parameters (data are the same).

*the voltages of the three leds are comparable at all currents. In a single li-ion situation with single-die white leds, such a 0.3V voltage difference that you see here would be highly significant because the overhead voltage is so critical, but because these leds will usually be driven by two li-ions in series that give way more generous overhead voltage, a 0.3V difference matters less.

*this particular MT-G2 led in this test maxes out at 12A, that is an amp higher than in my previous MT-G2 test. It could be the individual led, but it could also be the better and active cooling that the copper ledboard-mount provides, that was not yet made at the time of the first test.

*the XHP50 is performing better than the MT-G2 up to 10 amps! (the tints of these two are not that different btw). This may not be a big difference but remember how much smaller the XHP50 is, how much cheaper, and it fits standard XM-L boards and reflectors! (ok, there's the donut hole problem that the MT-G2 does not have )

*the XHP50 has a max at 9A, lower than the MT-G2. It could be the result of the very different type of die, but more likely is that the small footprint of the led is even with the best possible mounting not enough to dissipate the heat at high currents (~50W of heat at 9A!); it is heat sag what you see. If you consider the XHP50 as four 2S2P XP-G2 dies (XP-G is about the size of the dies), the maximum current per die could be 6.5A, so because the current in the XH-P50 is shared between two strings of two, a maximum output at 13A is what you could expect if heat sag was less.

*the XHP70 is behaving like it has enormous heat problems at higher currents. If it would deserve any reason to exist, the performance should be way better. The dies are XM-L size, so if heat was not a problem its maximum could be at over 16A (2x8A for the two strings). So I think my poor mounting is the cause here. Dale has measured an output of the XHP70 out the front of a flashlight build of over 6000 lumen already, so it seems that something is wrong here. If I can lay my hands on a DTP copper MK-R board (Cutter has them, *sigh*) I will redo the XHP70 test to see if it does better then.

*all three leds, after the test, were set at a lower current again (the current that gave 80% of the maximum measured light output to be precise) to see how they suffered from the high stress of the test. All three performed similar as before, these are all very tough leds!

*if I compare the led output at lower current (3A) to the numbers that Cree provides, even though a bin is a range so I can't tell anything definite, it seems like the djozz-lumen is on the high side, for the XH-P70 I measure 4.5% more than Cree, for the MT-G2 I measure 8% more than Cree. I assume here that the leds were kept at 25 degC, which in my set-up, at 3A, I think that will not be far off.

So that's my tests sofar. I'm impressed, for now by the XH-P50, and eventually probably by the XHP70 too (as Dale already showed). I tried some reflectors on top of the bare leds, and I find it indeed a pain to make a good beam without donut or other beam disturbances, even with OP-reflectors. But with an OP-reflector and some fiddling with the focus I could make very decent beams that do not look perfect on a white wall, but are really adequate in practical use of a flashlight.

Fantastic tests as usual! Even with the XHP70 going a little saggy it’s great to see a direct comparison. Bring on those sinkpads and nicer tints!

I appear to be the only one here excited about the XH-P50. My solarforce will get one in a P60 as soon as someone gets the 5000k in stock. Great work djozz