Cree Achieves ‘Incandescent’ LED Quality at High LPW

By Tom Allen

Cree has demonstrated a high- brightness and high-efficiency LED, which delivers almost 1,600 lumens at 134 lumens-per-Watt (LPW). Colour quality is said to be similar to that of an incandescent light bulb. The result is around a 25% increase in LPW over production LEDs of similar colour quality, under real-world operating conditions.

According to Cree, ‘many’ of today’s LEDs providing high light quality quality do so at the cost of efficacy. The new light source, however, has been recorded producing 1,587 lumens at 350mA and junction temperatures of 85°, at 134 LPW, with a CRI Ra > 90 and R9 > 90 and 2,700K CCT.

A current 60W LED replacement lamp with an average light quality (3,000K CCT and 80 CRI), says Cree, could be upgraded to an incandescent-like quality (2,700K CCT, 90+ CRI and 90+ R9), with the same light output and power consumption levels.