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152 TECHNOLOGY / BENCHTEST


OSRAM PREVALED CORE LUMINOUS FLUX: 2426 EFFICACY: 86 LM/W CONSUMPTION: 28W RA: 83 R9: 11 CCT: 3969


The Osram module is based upon the new PrevaLED Core C –Z2 3000 lumen module that delivered 2426 lumens with system power consumption of 28.3W to provide a system efficacy of 85.8 lm/W. The PrevaLED utilises a Chip on Board (COB) design to improve the light output homogeneity which could reduce the need for diffusers.


The LED light engine starts with initial SCDM of 4 which is quite high in terms of most LED binning systems. However, with a CCT of 3968K and a CRI of 83 and R9 value of 11.1, the module meets most of the colour quality requirements for a downlight application. The use of a high efficacy COB LED array enables a high efficacy system without the need for active cooling or significant numbers of LED emitters and therefore the system costs should be competitive for such solutions in practice.


XICATO XSM 8040-2000/C4A LUMINOUS FLUX: 2386 EFFICACY: 52 LM/W CONSUMPTION: 46W RA: 81 R9: 15 CCT: 4018


The Xicato XSM 8040-2000/C4A LED mod- ule provided a module efficacy 51.8 lm/W and consumed more than 46.1W of system power. The efficacy was significantly lower than the rest of the modules and even at Time=0s the efficacy was 53.32 lm/W. However, further inspection of the system showed that the heatsink supplied exposed the rear of the module which is poor thermal management practice and the heatsink is not making good thermal contact to the module as shown below. The driver used with the Xicato module also had a very poor PFC of just 0.51 so it would be advisable to use an LED with ac- tive PFC in order to meet market criteria of PFC > 0.9.


The Xicato module uses remote/cold phosphor technology based LED module producing 2386 lumens with a CRI of 81.1 and an R9 value of 14.6. The advantage of Xicato modules are such that the colour consistency between modules is very high and these modules are stated to have tolerances less than 2 standard McAdams ellipses.


HOW THEY ARRIVED AT THE LAB


GE INFUSION LUMINOUS FLUX: 2439 EFFICACY: 70 LM/W CONSUMPTION: 35W RA: 83 R9: 25 CCT: 3993


The GE Infusion LED module delivered over 2439 lumens with a CCT of 3993K, a CRI of 83.1 with an R9 value of 25.1. The total module efficacy was determined to be 70.3 lm/W. The Infusion module is small and with a simple twist and lock, the light module can be easily removed and replaced and no additional hardware is necessary.


The GE module appears to utilise the Cree XPG LEDs as can be seen from the 14 white LEDs below. The Infusion LED solution maintains incredibly con- sistent colour quality from module to module (as low as 2-MacAdam ellipse consistency).


The modules are also available in 80 or 90 CRI options although the available lumens will change accord- ingly. The modules are available with a range of reflectors, optics, drivers and dimming controls to allow fixture manufacturers to rapidly build fixture designs that can be updated in the future.


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