Cree demonstrates 200 l/W LED lighting; and announces high-brightness/high CRI modules

February 03, 2014 // By Graham Prophet
In the last week LED maker Cree has empahsised the pace of change in LED lighting, with announcements in LED lighting, firstly, with a prototype achieving a significant increase in luminous efficacy (light output for electrical power input): and then, in high-efficiency, high-CRI (colour-rendering index) emitters.

In the first announcement, the company discloses the first 200-lumen-per-Watt (LPW) LED concept luminaire, which is more than twice the efficiency of the best linear fluorescent luminaires. The latest Department of Energy (DoE) projections had estimated that this level of luminaire efficiency would not occur until after 2020, but Cree’s says it has made this possible six years sooner than projected. The prototype exploits Cree’s vertical integration with innovations in LED chips, optics, materials technology and system design to deliver the performance.

The 3,200-lumen concept luminaire delivered greater than 200 LPW at 80 CRI at thermal equilibrium while remaining within the ANSI colour specification for 3000K. The innovations behind the concept luminaire will enable Cree to deliver increased performance in LED luminaire applications at a lower cost to accelerate LED adoption.


Brightest High-CRI LED module

Cree’s 6000-lumen LMH2 LED module is the industry’s brightest module to offer colour-quality greater than 90 CRI at a consistent efficacy of 85 lumens per Watt across a wide range of colour temperatures (3000 K, 3500 K and 4000 K). The LED solution is, the company says, an ideal replacement for 100W ceramic-metal-halide lamps in high-ceiling applications, using 30% less power, lasting three times as long and delivering instant-on, dimmable light.

Cree anticipates the modules being used in applications that include lighting large public spaces such as shopping malls, airports, convention centres and theatres, and adds, “Before the introduction of [this] module, there were no feasible LED solutions to light these spaces.”

Lighting manufacturers can create an entire product portfolio with just one tooling set and one optical design. Lighting products based on the LMH2 LED module also enable lighting designers to illuminate a space with one light source and lighting technology, helping to eliminate the problems, such as colour consistency and re-lamping, that come with using different lighting technologies.

Lighting manufacturers looking to shorten the time-to-market for their luminaire design can also