164 TECHNOLOGY / ANNUAL LED ROUND UP
Figure 8: The Sharp pico Zenigata launched in March.
• Eight colour temperature options.
Verbatim: unveiled a set of high-perfor- mance halogen replacement LED spotlights including the MR16 GU5.3 with 450 lumens output and the dimmable PAR16 GU10, producing 230 lumens, delivering attention- grabbing accent-lighting. The 64lm/W efficiency is significant for the 7W MR16 GU5.3 lamp, while the introduc- tion of a dimmable PAR16 GU10 at 6.5W is also noteworthy.
APRIL 2012 Bridgelux: announced expansion of its highly successful Decor line of ultra-high CRI LED arrays as shown in figure 9. Address- ing growing demand in the shop and retail, architectural, hospitality and museum light- ing markets for the energy efficiency and high quality light offered by LED technology, Bridgelux has expanded its successful Decor 97 CRI product series to now offer increased efficiency as well as a broader range of light sources - from 500 to 5000 operational lumens in three colour temperatures, 2700, 3000 and 3500K - to satisfy the increasing number of applications demanding very high light quality. Bridgelux announced the introduction of the Bridgelux Cetero Spot Light Module (SLM) at Light + Building, which is a com- pact high flux density light source delivering clean and consistent white light without pixilation and engineered to comply with the Zhaga spot light module specification. The Cetero SLM (figure 10) will offer light output ranging from 800 to 2300 lumens across multiple colour temperatures all in one common form factor. Its mechani- cal compatibility with the upcoming Zhaga interface specifications will ensure in- terchangeability and a modular product platform that will expand luminaire design options for our customers. Cree: designed and engineered with Speirs + Major, one of the world’s leading lighting design firms, the Aeroblades luminaire se- ries takes a bold approach to architectural street, area and security lighting. Aero- blades luminaires redefine exterior lighting
Figure 9: The high CRI Bridgelux Décor LED array.
by enabling beautiful LED implementation while optimising thermal management, light control, efficiency, longevity and payback. Cree also introduced the availability of improved Cree XLamp XT-E and XM-L High- Voltage LEDs to provide manufacturers more efficient, cost-effective components. The XT-E High-Voltage LEDs can deliver up to 357 lumens at 3W in cool white (6500K) and up to 275 lumens at 3W in warm white (3000K), both at 85°C. The XM-L High-Volt- age LEDs can deliver up to 647 lumens at 6W in cool white (6500K) and 555 lumens at 6W in warm white (3000K) both at 85°C. LG: in terms of OLED developments the current technology leader at Light+ Build- ing was definitely LG Chem who presented 60lm/W panels. LG Chem started mass production of OLED panels in October 2011 with 45lm/W panels which have already increased to 60lm/W in 2012 with CCT’s of 3000K, 3500K and 4000K. The OLED panels are some of the largest in the industry at 150mm x 150mm. The LG Chem roadmap offers outstanding performance. Table 1 shows their predictions for OLED perfor- mance by 2015. Luminus Devices: launched a family of round LEDs (figure 11) that will accelerate the adoption of solid-state technology by displacing conventional light sources in high brightness lighting applications. Optical architectures of high power entertainment fixtures are frequently defined by a circular aperture, so using a traditional square LED is like putting a square peg into a round hole. The new round LED increases system- level efficiency by as much as 30%, enabling designers to use a single LED to replace a 250W HID lamp. • LED emitter family includes two die sizes;
Year
2011 2012 2013 2015
Performance (Lm/W)
45 60 80
135
Figure 10: The Bridgelux Zhaga compliant spot light at Light + Building.
• 7mm2 die offered in red, green, blue
and white in a surface mount package (SBT-70);
• 14.2mm2 chip on board offered in white (CBT-140);
• The CBT-140 can now replace a 250W HID lamp with a single point source/die LED;
• The CBT-140 chip is world’s largest single die, a jump from 12mm2
, the
previous largest single die which is also a Luminus chip.
Nichia: released the NS9x383, a multi-chip power LED offering 150lm/W at its typical 350mA current (figure 12). This LED is a great choice for high bay, street lighting and wide angled down lighting applications. Key aspects to the LED include a low forward voltage of 2.9V and colour rendering R9 value which is >0. Osram: announced the Soleriq E LED arrays at Light + Building. The new Soleriq series provides the first chip-on-board LED from Osram Opto Semiconductors as shown in figure 13. Even at high application tempera- tures the LED arrays create the basis for highly efficient luminaires with a luminous flux of 1500 lm to 4500lm. The Soleriq E is available in two versions, covering the entire colour spectrum from 2700 to 6500K. Even at a temperature of 85°C, which corresponds closely to the tem- perature in the application, the two LEDs offer an impressive efficiency of 103lm/W at 4000K. At this temperature the larger Soleriq E 45 achieves a typical brightness of 4000 lm (rated current 880mA); the smaller Soleriq E 30 produces a lumen output of 2700 lm (at 600mA). The Soleriq E30 comes in a package dimen- sion of 30mm x 30mm x 1.7mm whilst the
Lifetime (L70) kHr
12 15 20 40
Table 1: Road map White OLED performance from LG Chem.
Brightness (Cd/M^2)
3000 3000 4000 4000
Max Panel Size (mm)
100 x 100 150 x 150 150 x 150 300 x 300
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