Lumileds Boosts Intensity of CoBs for Spots and Downlights
Second generation arrays feature high performance and a 14 percent flux improvement over predecessors
Lumileds has introduced three lines of CoBs: the Luxeon CX Plus CoB (Gen 2), Luxeon CX Plus CoB High Density, and Luxeon CX Plus CoB High Density (Below BBL), drop-in upgrades for Lumileds and competing arrays.
The second generation arrays feature high performance and a 14 percent flux improvement vs. the previous generation. Delivered in a range of light emitting surfaces (LES) (4.5, 6, 12 and 14mm) and correlated colour temperatures of 2700K to 5000K, the Gen 2 arrays are said to provide excellent efficiency of above 140 lm/W at 3000K 80CRI or 122 lm/W at 3000K 90CRI.
The High Density version of Luxeon CX Plus CoB provides high punch (centre beam candle power) and is available in on-black body locus (BBL) coordinates for halogen-like illumination or below-BBL for ceramic metal halide-like illumination.
The Luxeon CX Plus CoB High Density provides up to 1,150 lumens at 3000K 90CRI from the smallest LES of 4.5mm. Flux is 10 percent higher than competing CoBs at 6mm and 9mm LES. Offered in three LES (4.5, 6 and 9mm) on 13.35mm x 13.35mm substrate, the arrays cover a range of colour temperatures (2700K to 5000K) with a minimum of 80CRI or 90CRI and colour control within 3-step or 2-step MacAdam ellipse.
For the Below-BBL versions, colour temperature range is 2700K to 4000K at a minimum of 95CRI with colour control within 3-step or 2-step MacAdam ellipse. “The below black body option is perfect for illuminating artwork, for instance, because the highest colour fidelity combines with slightly more saturated colours for stunning results,” said LP Liew, product manager of Luxeon CoBs.
All Luxeon arrays use a metal core PCB substrate that is more resistant to cracking during luminaire assembly. The low resistance of the MCPCB also provides superior removal of heat from the LED, leading to smaller heatsinks and more compact luminaires, according to the company.
