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146 TECHNOLOGY / LED


Alongside the current lumen maintenance data often found by manufacturers, Xicato published colour shift data (see figure 12) on six test modules which demonstrated con- sistent <2SDCM colour points to 6,000hrs+. Sustained quality of light, not simply lumen maintenance, is core to Xicato’s philosophy. SEOUL SEMICONDUCTOR: Launched the Ac- riche 2 in 4W, 8W, 12W and 16W LED boards providing bulb replacement LED solutions to replace 40W, 60W and 100W incandes- cent bulb as well as MR16 halogen lamps and standard down lights. The Acriche 2 has been increased more than 90% in power efficiency by improving the power factor up to 95%, THD has become lower than 25% to comply with the requirement of each country requirements. Through cutting edge technology placed on the LED IC, lighting manufactures can directly plug the modules into the wall socket without considering any electrical drivers. The Acriche 2 platform is seen in figure 13.


Figure 14: Performance of the new Citizen LEDs.


for its highly efficient XLamp XP-G LEDs, now delivering up to 140 lumens per watt. The cool white XLamp XP-G provides up to 148 lumens and 141 lumens per watt, while the outdoor white (4000K) XP-G LED deliv- ers up to 139 lumens and 132 lumens per watt and warm white (3000K) offers up to 122 lumens and 116 lumens per watt, all at 350mA.


Figure 13: The Seoul Semi Acriche 2 AC LED 12W Module.


CITIZEN ELECTRONICS: Developed five new packages and eleven types of LEDs in six different colour temperatures. The world’s first LED producing high luminous flux of 17,675 lm in 5,000K CCT and Ra of 65 has been achieved and the luminous flux per LED is dramatically increased from 4,390 lumens, which was the highest luminous flux of Citizen’s conventional array models. It is now possible to select from an LED range based on luminous flux (approximately 100lm to 17,675lm) and luminous efficacy (125lm/W to 96lm/W) per LED as shown in figure 14. The increased performance of the LEDs are due to high heat dissipation through the placement of LED Chips on an aluminum chip on board substrate and high efficiency light extraction.


The new LED arrays are are compliant with the chromaticity control standard 3-Step MacAdam ellipses which is about a ninth of the chromaticity range of ANSI C78.377. CREE: Extended the advantage of its in- dustry-leading XLamp LED family with the announcement of new levels of performance


By leveraging the popular XP-G LED form factor, these increases in brightness and efficacy can shorten the LED fixture design cycle and improve customer time to market, with drop-in-ready performance enhance- ments. Cree XP-G LEDs also boast the longest projected lifetime data published from lighting-class LEDs by publishing 10,000 hours of lifetime data that can allow cus- tomers to project TM-21 reported lifetimes greater than 60,000 hours, or nearly seven


years.


Cree announced the commercial availability of high-voltage XLamp XT-E and XM-L LEDs. These new LEDs can enable the use of more efficient, smaller drivers to lower cost for compact lighting applications such as cande- labras and retrofit lamps. The XLamp XM-L LED delivers up to 600lm in Cool White (6000K) and up to 462lm in Warm White (3000K) at 6W, 85C. The XLamp XT-E LED delivers up to 300 lm in Cool White (6000K) and up to 228lm in Warm White (3000K) at 3W, 85C. Both LEDs have a typical voltage of 46V at binning conditions. Cree also launched the new MT-G LED that is now more than 10 percent brighter, and can deliver up to 1670 lumens at 85C in warm white (3000K) colour temperatures. Addi- tionally, MT-G LEDs are now available in high CRI (90 min) versions optimised for applica-


Figure 17: World record performance of RED LEDs by Osram.


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