I think you’re looking at it as if the XPL HI is “de-domed” like we do around here. But, that is not the case. The color binning is done after production. So, the tint will be what they bin it as. It may take a different mix of phosphors to produce the same tint as one with the dome on. But they don’t bin it by the phosphor mix, they bin it by the light output after production.
Yeah I understand that the binning was done based on the light output, that’s why I said it may be due to the die itself - but you phrased it more correctly I think, which is actually the “phosphor mix” in it.
I don’t think CREE made domed XPL and then dedome them to make XPL HI. That is like you go forward one step and then backward one step.
Making domeless emitters with desired tint is probably even easier than with domed emitters (less factors like focusing of dome…).
Nice tests! It is amazing they can get a 1A out of such a thin dome, and still get the throw. Gotta wonder though if the V2 1A HI is comparable equal to a V6 domed, or better/worse. Always thought this was somewhat possible, just glad CREE did the R&D and accomplished it, though I'm sure it wasn't for our use, more likely for another industry such as auto or spot lighting, etc. Makes sense for those industries because they can reduce the reflector width/depth and still get good distance out of it.
I'd prefer waiting for the V2 5000K (3C or so) to become available - any higher bin than V2 may take a while longer.
Looks like an XQ-B in the house bulb. Or one of the XB models. Probably the XB-E or XB-G because they’re high voltage at some 23V.
I have some of the XP-L HI V2 1A coming from Cutter to use in a Quad for the Welight Titanium Ti-Rey or Ti-Ten or whatever he ends up calling it. The Titanium version of an X6. It’ll be interesting to see if throw is improved under the Ledil CUTE-4 optics and what kind of output it makes on an FET +1 driver.
I have some XPL HI in 5000K U5-NW but not binned for tint. I did a primary (RGB) spectral analysis of a few of them and found that they would plot somewhere around a 3C and 3D…a little closer to a 3C.
I loaded an xpg2 R5-3C in a host and put the XPL HI 5000k in a host and compared them. Both used an orange peel reflector to blend the light and make tint comparison easier.
The XPG2 R5-3C is in a P60 @ 3.04A and the XPL HI 5000K is in an M1.
I feel very comfortable using this emitter as an XPL Neutral, since it matches the 3C so well.
This photo is Auto white balance:
!!
This photo is White Balance set at 5000K. This one looks more like what I saw:
!!
I’m upgrading my Cypreus this week from de-domed XP-L to XP-L HI, to fix its tint. Also upgrading the driver from FET to FET+1 to get better low modes. Maybe in a year or two I can upgrade it again to get a higher output bin.
I wonder how much the output will drop, going from a de-domed V6 to a factory-de-domed U5. And I wonder how its lumen output compares to a high-bin domed XP-G2. Think you might be able to test that in the original host?
The old emitters are XP-L V6 2C dedomed, new ones are XP-L HI U5 5000K … and what I’d ideally like is XP-L V6 (or higher) 3D with domes and with large enough optics.
Also, I want your integrating sphere. My current solution is an “integrating milk carton”, which is a bit less than ideal.
The integrating milk carton method works well, as long as the luxmeter sensor does not receive light directly from the lightsource, integration should at least be better than the bended pipe things. It helps integration if the shiny inside is sanded to flat with very fine sandpaper. Do you have a range problem? Or is there a grey filter before the light sensor?
Reference: https://budgetlightforum.com/t/-/6918 for the bent pipe things . I agree, science does not back up our pipes. I find if I slightly tip a light so the business end points towards the inside of the pipe, it increases readings quite a bit, whcih leads me to believe flooders may be over estimated. Might explain some of our (the bent pipe club members) unexplainable high readings on flooders. manxbuggy1/rdrfronty abd TurboBB did extensive tests of high quality lights with the pipe light box, and can show consistency, but I'm pretty sure vast majority were reflector based, not flooders, maybe all were reflector based. There weren't many off the shelf high end TIR optics or aspherics around at the time.