Would be intrerresting to know :
- how many lumens @ 350mA 75lm/W
- how much current/power it needs to achieve 1000lm... in order to know what efficiency they hit @ 1000lm
Without those two bits of info, this press release is almost utterly worthless.
They could be gettng 75 lumens per watt running all six dice in parallel , which would mean about 70mA through each one, and barely be running over a watt altogether (assuming forward voltage of 3.5 for each die) for a grand total of 80 lumens. Efficiency at 1000 lumens might well be only around under 40 lumens per watt, requiring over 25 watts of input power (over 4 watts for each one) and one hell of a heatsink. Some of my smaller flashlights are about the same size as my 25W soldering iron...
On the other hand, if they are running all six in series, 350mA would be 7.5 watts and 550 lumens. I could buy that an LED with those specs would be able to produce 1000 lumens at 60 lumens per watt, or 16.5 watts of input. Seems like if they pulled off something this good they would have probably said so, though.
It coudl also be 2 strings of 3 in series, 3 strings of 2 in series, or some new sort of LED dice that don't drop anywhere close to 3.5 volts each for that matter.