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

Yes I think with the right focus (i.e slightly out of focus, in the cross zone) and a bit of an OP it could look really nice. Of course the real thing is always going to behave differently to a sim (especially with the dome on) but I like having an empirical idea of what the physics are doing.

I actually assumed there would be a much bigger difference in the projected image between pushing the emitter into the reflector vs pulling it out, doesn’t seem to be the case here. Next I’ll add the reflector hole to the sim and see what that actually does to projected image.

I look forward to seeing some real world beamshots with various reflectors and see if the sims are true to life :slight_smile:

Faceted reflectors like the Boom from Ledil gave a flawless beam with quad dies.

It looks like they have one already for the XHP70 it won’t give much throw though

This is just showing us what we already know to be the case but your mention of the faceted reflector gave an idea to quickly simulate what the hotspot would look like projected through a lightly OP/Faceted reflector.


Both projections are with the emitter at +7.5 units into the reflector (in the dim cross sweet zone), one with a rough approximation of an OP surface and the other SMO.
Looks very promising indeed, especially since the same comparison done with the emitter in focus didn’t do much to eliminate the donut.

In other news, the sky is blue! :wink:

I’ve used this reflector in a couple of builds: http://cutter.com.au/proddetail.php?prod=cut1111

It works well with xml2 and mtg2, yes it is on the large-size, but it fits (with a bit of trimming) in a 109led head grafted onto a Mag.

I will ship one worldwide free to anyone who wants to test it with the xhp70 and post beamshots here.

That “approximation” of the smooth reflector looks almost exactly like what I saw with the Olight Triton reflector.

Nice work! And that Ledil reflector looks like the answer…

Do you have a link to a bigger datasheet showing the proper dimensions of that reflector? I can’t find one through google and that one on cutter needs to be studied under a microscope.

Cool, good to know the results are in line with the real thing.

Yeah, that drawing is unreadable on Cutter website!

The reflector is 50mm deep and 71mm in diameter. Overall it is 80mm in diameter.

It is made by Nata , but after a quick look on their site I have not found it….

Awesome! Thanks :slight_smile:

Ledil also makes many reflectors of that type for XM-L, MT-G, MT-G2, etc.

In obscuring the cross in the beam pattern, the faceted reflectors will likely yield the higher efficiency as compared to OP reflectors.

Although this die will never be a far thrower - regardless of the reflector, Ledil shows 27 compatible reflectors for the XHP70 in their search engine. FCN13895_SEANNA-A looks interesting (Viewing Angle 4.3° simulated) but 153mm x 79mm makes it quite large.

I didn’t know that the faceted reflectors were good at that. Thank you for corroborating that bit. Now I’m more motivated to pick up an XHP70.

As to the FCN13895_SEANNA-A… regardless of size, it’s a little expensive. ~$55 in QTY=1 at wherever (Mouser/Digikey/etc). Whew.

The Mirella is sized right, 50mm with the flange on top, 38mm with the flange cut off. 20mm tall. 17º viewing angle and only $4.11. Yeah, I’ll be trying this one out in a few days. :wink:

Edit: Wondering if a couple of Efest Purple 18350’s will get me 4000 lumens + from an Eagle Eye X6? :smiley:

I gathered the facet observations back in the days that I played with the MC-E and P7 quads.

The FCN13895_SEANNA-A is an expensive reflector, but appears to be a well engineered precision piece and complex to manufacture. As a sealed unit, the base could conceivably be epoxied into a small light with the rest of the reflector hanging way out there. I hope OL didnt read that. :smiley: Check out some of the data sheets the search engine finds on the XHP70. Many of the Bridgelux cobs that share the same reflectors kick the XHP70 at its own game. I didnt go any further, but they probably operate in the 24 or 36 or 52V range, so not very useful for our hobby.

While Im not getting too excited about the HXP’s, I am looking forward to more offerings from Cree and their competition that can withstand these higher heat ranges along with the claimed high maintenance values at those temps. The real advantages are in their ability to produce high lumens at higher operating temperatures, which equates to smaller/less costly/cheaper heat sinking solutions. For us, it means isolating the cells and driver to keep them cool while allowing the head to run much hotter than we typically allow them to now.

I just wish something cheap and revolutionary would come along to replace LED’s all together… with 4 times the lumens @ 1/4th the power requirements… with nearly no wasted heat. I imagine it will eventually happen, but it probably wont resemble an LED.

As an aside, I wonder what (if any) lumen increases the Olight SR96 might realize if the MK-R’s were swapped out for XHP70’s. I bet those shallow heavy OP reflectors would do well. Who has one to tear apart?? :bigsmile:

Man I can’t wait to get my hands on these…

Anybody know if they are available anywhere yet on copper sink pad?

At the moment there is just the aluminium MK-R Sinkpad, no copper one but apart from extreme builds, the aluminium one will work just as well. I do not know if it is for sale anywhere.

Perhaps intl-outdoor will come up with a Noctigon for this led at some point (Hank, please? ;-) )

20mm Star Full Copper PCB for Cree MKR Led in a single PCB configuration

Nice…

I guess (hope) soon they will be offering the XHP70’s on that copper sink…

Except the shipping is higher than the cost of the stars. Even if you buy like 50 of them, it's still a very high shipping cost. It's just not possible for anyone outside of AUS.

Exactly. It may be somewhat less expensive to do the MOQ from SinkPAD, but still pricey for a single person doing only a few builds.

Instead, the determined individual might consider converting non-DTP copper boards to DTP. That’s nobody’s favorite activity, but it does work… Topledlight sells MK-R on copper MCPCB w/ MOQ=5, so $20/set of 5.

I hate Cutter for being unreachable for a plain close to broke flashaholic , while always having the right stuff ;-)