Given that there is a small gap between the dies, I can not think of a reason why there will not be a visible donut hole in the hotspot when used well focused in a smooth reflector, like we do in flashlights. It may be limited but it will be there, and an OP reflector may be needed to smooth it out.
The manufacturer may not realise that that is how a led is often used in a flashlight, as opposed to general lighting/car uses.
Well, as for why I trust them and do not worry, similar LEDs like the XHP70/XHP50 had this problem being domed LEDs with gapped dies, but when being dedomed, the problem went away.
I updated the spreadsheet with all of the new demands.
And yeah, I’m currently in talks with the manufacturer to check if he could send their current CNW/CW samples(5700-6500k) to fogofwar to see if the donut hole problem is a big thing or not.
In the meantime, I’m still looking for a similar LED as an alternative with a single die
It might be domeless, but we want optimal beam quality
Don’t worry: I haven’t found another manufacturer capable of making such an LED yet with a better emitter setup, so everything is good.
It’s our “only” current option unless someone at Nichia/Luminus/Cree/Getian decides to actually make something like this