San Jose, CA —There's a new record in efficiency for LEDs. According to LumiLeds Lighting (a joint venture of Agilent Technologies and Philips Lighting), its latest InGaN (indium gallium nitride) devices have wallplug efficiencies (WPE) of 25% at 425-nm (purple) wavelength, running at 250 mA dc. The previous reported industry record was 22%. WPE is considered a "real world" quantity, measuring optical output power divided by electrical energy input. The devices emit more than 200 mW of optical power.
Frank Steranka, LumiLeds materials R & D and product development manager, adds, "We are exhibiting up to 55 lumen devices in certain colors." Applications in-clude LCD monitors and TVs, with brighter colors and lower pow-er consumption, and consumer uses such as flashlights.
One way to keep a Formula One racing team moving at breakneck speed in the pit and at the test facility is to bring CAD drawings of the racing vehicle’s parts down to the test facility and even out to the track.
Most of us would just as soon step on a cockroach rather than study it, but that’s just what researchers at UC Berkeley did in the pursuit of building small, nimble robots suitable for disaster-recovery and search-and-rescue missions.
Design engineers need to prepare for a future in which their electronic products will use not just one or two, but possibly many user interfaces that involve touch, vision, gestures, and even eye movements.
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