Cree royal blue LED for remote phosphor lighting

Cree has released its XT-E royal blue (450nm) LED, aimed at remote-phosphor white lighting sources, writes Steve Bush.

“In addition, Cree announces a remote phosphor component patent licensing program that provides access to remote phosphor patents,” said the firm.

The LED delivers up to 525mW at 350mA and 85°C, and is available in 2.5nm wavelength bins.

“Compared to the standard XP-E royal blue, the XT-E royal blue is up to 20% more efficient,” said Cree.

The company has not said whether or not top efficiency bins are included in this initial release.

Royal blue LEDs are specified in mW rather than lumens because lumen figures include an eye sensitivity weighting and eye response at these short wavelengths varies considerably from person to person.

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