news digest ♦ LEDs white light in bulbs and fixtures.
LUXEON Rebel ES Lime is the proprietary LED technology in the Philips hue bulb, where it combines with LUXEON Rebel Red - Orange and Rebel Royal Blue emitters to deliver over sixteen million colour options - all controlled from an iOS device. Philips hue can use colour tuneable Light Recipes to help set mood and energy level in the home, office, retail, classroom and hospital environments .
“This really represents a new frontier in lighting, because LUXEON Rebel ES Lime emitters can be combined with other Rebel colour and white emitters to achieve higher CRI and R9 combinations than any previous generation emitters or arrays,” says Rahul Bammi, VP of Product Management
Lumileds claims Lime is the highest efficacy LUXEON LED manufactured to date. Therefore it enables highly efficient colour mixing by providing a convenient above - blackbody colour point with optimal standalone efficiency of 200 lm/W at 350 mA and 85 °C. The spectral output of Lime is closely aligned with the wavelength that human eye cones are most sensitive to, 555 nm.
“We are finding that all our customers are very interested in Lime due to the outstanding efficiency and flux it brings to every lighting application,” says Bammi .
In addition to LUXEON Rebel ES, the Lime technology is offered in the LUXEON Z format, an undomed, 2.2 mm LED that is 75 percent smaller than most high power LEDs. In spotlight and downlight applications, the LUXEON Z enables tighter packing density and better colour mixing control. The LUXEON Z Lime can be combined with Red and Blue LEDs to achieve a broad spectrum of saturated colours.
Alternatively, tuneable white light with high efficacy can be achieved from 1800 - 6500K along the blackbody curve. Because Lime is closer to the blackbody curve than green LEDs, much less inefficient red is needed to make white light with Lime instead of green, especially at warmer colour temperatures.
For instance, colour tuning of 2250 - 2950K can be achieved with an R9 greater than 90, CRI over 90 and efficacy of 90 lm/W using a LUXEON Z combination.
When using a similar combination of red, green and blue LEDs to create 3000K white light, the CRI is close to 20.
Soraa unveils first full visible spectrum LED AR111 lamps
The new AR111 lamp uses the firm’s patented GaN on GaN technology
Soraa, an innovator in GaN on GaN LED technology, will display its new AR111 lamp at Euroshop this month.
The lamp is the market’s first full-visible-spectrum LED AR111, and brings Soraa’s signature elements of light quality to the large lamp arena: vivid colours, unique whiteness rendering, and perfectly uniform beams casting sharp single shadows. To this, Soraa’s AR111 adds unmatched light intensity, creating the perfect lamp for retail lighting.
“Soraa’s lamp is a game-changer in the LED AR111 landscape. With it, we bring to the market an energy- efficient AR111 lamp of exceptionally high intensity and quality of light,” says Nick Farraway, Senior Vice President - International at Soraa. “This year, we will expand our portfolio beyond our award-winning MR16 GU5.3 and GU10 lamps to create a full line of four inch lamps powered by our GaN on GaN LED technology.”
This month, Soraa will display at EuroShop a full-visible- spectrum 8o AR111 LED lamp, with CRI of 95 and R9 of 95. Available in June, this lamp will have a peak luminous intensity of 27,500 Cd and light output of 980 lumens, the best in the market. Soraa will also offer 80 CRI AR111 lamps with a peak luminous intensity of 34,000 Cd, twice that of the nearest competitor.
The high lumen density of the GaN on GaN LED enables the single source, high luminous intensity, and superior beam control which characterize all of Soraa’s lamps. The violet light in Soraa’s full-visible-spectrum LED excites the Optical Brightening Agents present in many white products, so a brilliant white shirt shows brilliantly under Soraa light, but yellow and dull under any other LED.
Soraa’s AR111 lamp is dimmable, will be available in a wide range of colour temperatures and beam angles, works in fully enclosed fixtures, and conforms to the IEC/ ANSI AR111 form factor, ensuring compatibility with a broad range of fixtures. The 8o AR111 lamp works with Soraa’s SNAP system, a set of easy-to-use magnetic beam spreaders and colour shifters that allows endless design and display possibilities.
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www.compoundsemiconductor.net March 2014
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