170 TECHNOLOGY / ANNUAL LED ROUND UP
line up covering powers between 15W to 50W (available versions: 15W; 25W, 35W and 50W); 24 x 20mm COB (ceramic substrate) for general illumination (spot and down- lights etc.) requiring high lumen levels. The Mega ZENIGATA can be directly mounted onto the heat sink and requires no further electrical insulation. The unique ceramic substrate offers long-term reliability and excellent heat dissipation thanks to the flat surface of the ceramic substrate and provides low heat resistance for efficient thermal management. The main features of the family include: • Chip-on-board LED with only two termi nal connections for easy installation;
Figure 20: Bridgelux and Toshiba’s 8 inch silicon wafers in a MOCVD Reactor.
improvements within its PT family of LED emitters. They had achieved the industry’s brightest Pure Green LEDs by making a significant jump, over 50% brighter than the 2011 generation PT chips. The Red LEDs of- fer over a 35% improvement and blue LEDs over a 30% improvement compared to the 2011 generation PT chips. Together these brightness improvements on projection- optimised RGB chipsets have enabled up to a 40% year-on-year projector performance improvements. Philips Lumileds: launched the Luxeon Z, the company’s smallest LED package to date (figure 21). With a total footprint of just 2.2 square millimeters and high lumen output across a full spectrum of colours from 440-670 nanometers, including white, the Luxeon Z offers luminaire designers the industry’s highest commercially available lumen density. With this breakthrough, con- figurations are virtually limitless, and with the ability to mount as many as 250 of the high-lumen Luxeon Z in one square-inch, designers can reach new levels in lumen densities. PhotonStar: introduced the Cryos Adjust- able CLE and CeilingStar BLE range. The Cryos is a Colour Tuneable High CRI low glare downlight including adjustable, wall wash, darklight and fixed. This is the first luminaire product to feature the new ChromaWhite CLE module, providing high CRI (>Ra90), variable CCT up to 1000lm. Fixed white and halogen emulation versions also available. The CeilingStar BLE is also a Colour Tune- able High CRI, shallow void downlight that offers a low void depth luminaire product to feature the new ChromaWhite technology, providing high CRI (>Ra90), variable CCT. Sharp: introduced the new Mega ZENIGATA
• CRI options of Ra 70+, 80+, 90+; • Luminous flux from 1,000 lm to 7000 lm;
• Luminous efficacy of up to 108lm/W; • Colour variation within a 3 MacAdam ellipse;
• Long lifetime: >40,000 hrs depending on operating conditions*;
• Operating temperature range: -30° to +100°C;
• Six different temperature options.
JULY 2012 Cree: introduced the XLamp XP-G2 LED to deliver luminaire manufacturers up to 20 percent more lumens per watt and 2.5 times the lumens-per-dollar over the original XP-G LED. Characterised and binned at 85°C, the new XP-G2 LED leverages the same footprint (3.45mm x 3.45mm) and is compatible optically with the original XP-G LED. The XP-G2 LEDs combine high light output, reliability and efficacy to deliver up to 151lm/W at 350mA, 85°C or 165lm/W at 350mA, 25°C in cool white (both at 6000K). In warm white (3000K), the XP-G2 LED delivers up to 133lm/W at 350mA, 85°C or 145lm/W at 350mA, 25°C. Cree also announced they had achieved a 170lm/W prototype LED light bulb less than one year after showcasing the 152lm/W concept LED bulb. Cree’s new 170 lumen- per-watt prototype LED bulb delivered more than 1250 lumens and consumes only 7.3W. The bulb uses Cree TrueWhite Technology to deliver a CRI of 90+. As an efficiency comparison, a traditional 75W incandescent light bulb produces 1100 lumens, which is only 14.6lm/W. Nichia: released the V1 versions of their highly regarded chip on board line-up (fig- ure 22). Nichia’s COB range offers products with flux options ranging from 740lm to 4,190lm (still at 120lm/W) with standard 3- step colour binning and hot and cold lumen ratings. LED Engine: introduced the LZ9 LuxiGen
emitter (figure 23), a new family of devices that deliver 2.5 times the lumens of existing LZ4 products within the same 7mm x 7mm footprint. The new 7mm LED emitter boosts output by 250% to 1300 lumens. The LZ9 emitter more than doubles the Lux-on-Target making it ideal for directional lighting fixtures such as the spot, accent and downlighting used in retail and com- mercial applications. The LuxiGen single emitter/single lens combination, available in colour temperatures ranging from 2700K warm white to 6500K cool white, provides the equivalent performance of a 75W PAR20 or PAR30 halogen source. In addition to the standard CRI 80 product, the LZ9-series is the first LuxiGen series to be introduced with a CRI 90 option for ap- plications that demand the highest levels of colour rendering. CCT binning of 3 MacAdam Ellipses is also available as a standard op- tion for uniform colour emitter to emitter. Nichia: released the V1 versions of their popular mid-power 757 package. With higher flux, these push Nichia’s mid-power packages to the front of efficiency. With several options including .15W, .2W, .45W and a 6V .6W multichip package, this is the package of choice for applications rang- ing from panel lighting to fluorescent tube replacement and flood lighting. In its most efficient version of the package, Nichia of- fers 155lm/W. Philips Lumileds: launched it second prod- uct in the mid-power LED range comprised of a compact 3.5mm x 3.5mm form factor, efficiency of more than 110lm/W at 100mA and a CRI minimum >80. The Luxeon 3535 (figure 24) is offered in a range of colour temperatures from 2700K to 6500K and are ideal for non-directional light sources.
SEPTEMBER 2012 Cree: introduced the new XLamp XP-E2 LED, delivering higherlm/W and lumens-per- dollar to lower system costs for existing XP- E and XP-G designs. The XP-E2 LEDs deliver up to 128lm/W at 350mA, 85°C or 143lm/W at 350mA, 25°C in cool white (6000K) and uses the same XP footprint (3.45mm x
Figure 21: The Luxeon Z range of super compact LED emitters.
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