Coen Liedenbaum, Innovation Area Manager Lighting for Philips Research, with the prototype 200 lumens per watt tube LED in the lab, now the world's most efficient LED lighting on a system, "real world" level that does not compromise on light quality. (Royal Philips Electronics)

Coen Liedenbaum, Innovation Area Manager Lighting for Philips Research, with the prototype 200 lumens per watt tube LED in the lab, now the world's most efficient LED lighting on a system, "real world" level that does not compromise on light quality. (Royal Philips Electronics)