In the begining , the projection with lens of a Xre was a bit strange for all, I think we prefer circle projection of led on the walls, but now don´t matter.
I have led lenser K3 with a nichia led and was very nice, but too poor on power, only 11
lumens¡¡ , now I put Cree xre on LL about 140 lumens and I still prefer the squares.
But if sst70 are cheaper than sst90 we can change our "wall" projections on circle (with lens)
I would love to see this in an aspheric setup,different than the traditional projected die square.I know the die size is big but a cool idea anyway just to experiment.
thanks bose, makes sense.
Finally, a round led die!
Can wait to get my hands on them
Round emitter dies are nothing new. They have been made by the Chinese in all the worst crap lights you can find. To me the round dies symbolize junk. Make mine square, please. :)
Here is a link with a couple example pics: http://www.candlepowerforums.com/vb/showthread.php?242143-zhong-sheng-zs20rba3-5W-flashlight&p=3085464&viewfull=1#post3085464
nice, but probably won't be a "budget item" for awhile
Take it easy on them. They make the best lights. With so little pay.
Agreed! Except for the LEDs themselves. 
I'm sure i've seen these being used for led headlights
I talked to the manufacturer of the flashlight that uses it and they say it is 2000 lumens off of 2 32650 batteries. Now I just have to resist the urge to buy it. :P
Round emitter calls for a square battery.
http://www.batteryspace.com/lifepo432650battery32v18ah576wh100aratebatteryinaluminum-box.aspx
The data says that it puts out a maximum of 100k lux at 1m.
"LEDs are square because saws cut straight lines and you have very little wasted space when cutting them out". Uh....., no not really. Look at this: http://www.lightdirectory.com/news-Ever-Wonder-How-LEDs-Are-Made%3F.htm
"If circle LEDs are the next thing be prepared to pay more for them as specialized equipment will be needed for singulation and the usable area for die drops significantly due to wasted material". Again....., no, not really. Currently used lasers make round shapes just as easy as square shapes. The only thing close to accurate in this statement is the (very) slightly increased wasted space per die. They might be a tiny bit more expensive but not much. As soon as another producer starts making them the price will drop. Heck, the price drops every year for square ones just because the volume of production goes up. Right? This is a common sense thing.
I forsee/predict a prefocused round LED that will eliminate the need for any kind of reflector whatsoever. Smaller, lighter, cheaper.
Knowledge is Power.
A round LED will be nice for zoomies and aspheric throwers.
Umm, I can go over right now and see the Diamond Dicing saws at work right now if I want. Guess what they are basically circular saws, they are not lasers.
Trust me, I know how LEDs are made, I am sure I know a lot more on how LEDs are made than you, I make them myself. If you want I can educate you on the process.
1st, this is not cree. This is luminus they may have a different method.
2nd, yes can you educate us. :)
True. The part about waste is not going to change though. If you draw a grid of circles, 1 circle will touch its 4 nearest neighbors on 4 infinitely small points. In between all the connections will be a small cross of wasted scrap material that can’t be used.
Look at all the bond wires on that sucker.
Also makes manufacture more difficult. Wonder why they haven’t moved over to a FC design.
That is true, but what I would like to know is what is the expensive part of the led. The board or the other ingredients and bond wires etc.