Delivering 140 lm/W at 350 mA and 86 lm/W at 2A in white at ~5000K from a single 1mm2 chip establishes new benchmarks for power LED performance.
(Pulse tests conducted under standard conditions)
For the first time in a power LED driven at 350 mA, the efficacy value is higher than the flux value. This is a direct result of lowering the forward voltage (Vf) of the LED — which lowers total power — while maintaining high external quantum efficiency which in turn lowers total power (Watts). These advances continue to positively affect the results as the test current is increased. Even at 1.5 A, the lab LEDs can achieve 100 lm/W and almost 500 lm from a single 1mm2 chip.
One week earlier, Osram Opto Semiconductors announced an efficacy of 136Lm/W from a white prototype LED with an operating current of 350mA and a flux of 500Lm when LEDs are driven at 1.4A.
These developments align with Driving Vision News’ Vision of Lighting 2018 forecast released a few weeks ago.