Sharp is supplementing its LED lighting portfolio with three new white ‘high colour rendering’, high-performance LEDs. The DoubleDome LEDs from Sharp already provide suitable light for energy-efficient lighting without secondary optics.
The light conversion layer of the DoubleDome LEDs is based on a two-phase development procedure especially developed by Sharp for this purpose. A layer of phosphorous for the conversion of white light is applied in a first step. The installation of the globe top made from transparent silicone in a second step makes light extraction possible without spreading loss. A ceramic plate serves as the LED carrier material instead of the plastic materials that are traditionally used. This allows efficient heat dissipation and helps to keep the required cooling element small.
The high colour rendering LEDs reach the high CRI value of 85 through the combination of blue LEDs with a special blend of green and red phosphorous. The SMD LEDs from the new GM2BBxxBM0C series ensure high colour fastness and attention to detail, important for applications where light must not distort the depiction of objects. Typical applications for high colour rendering (HCR) LEDs include photography, shop windows, shop lighting and merchandise presentation, as well as in medical technology.
As different applications also require different lighting concepts, the DoubleDome series is available in three different shades of white: warm white with 3000 K, natural white with 4000 K and pure white with 5000 K. The LEDs, which are solderable according to the reflow method, measure just 2,8 x 2,8 x 1,9 mm.
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