'DoubleDome' LEDs from Sharp

Apr 27, 2010 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.

Main features:
■ Dimensions: 2.8 x 2.8 x 1.9 mm
■ Power efficiency of up to 73 lm /W
■ Output of up to 38 lm (IF 150 mA/ VF 3.45 V)
■ High CRI of up to 85
■ Ceramic SMD package
■ Long lifetime: 40,000 hrs at 80° C. operating temperature (on package)
■ Operating range: -30° to +100° C.
■ Six different white tints: warm (2,700 K, 3,000 K and 3,500 K), natural (4,000 K), pure (5,000 K) and cool (6,500 K)

■ Precision domed primary lens for optimised 120° angle of radiation
■ Brighter illumination of desired area through highly focused light diffusion; reduced need for secondary optics
■ Power consumption only 0.5 W
■ Extremely compact construction
■ Ceramic substrate ensures high levels of heat release and reliability
■ Low thermal resistance for effi cient thermal management
■ Similar performance to conventional fluorescent lamps in efficiency, colour temperature and CRI terms

Author:  BIO T&T

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