CONVERSION ELEMENT WITH POROUS LAYER

Abstract: this specification discloses a converter element and light emitting devices including the converter element. the converter element is monolithic with at least two layers, where one layer is more porous than the other layer. the converter element may be integrated with a reflector layer, such as by metallization. the layer of the converter structure that is denser and having a smoother surface may be the one that is metallized, while the more porous layer is closer to the laser. the porosity enhances light extraction while the smoother surface decreases a loss of reflectivity at the reflector-phosphor interface. the converter element may be used in a laser based light emitting device.

Inventor(s): Hans-Helmut BECHTEL, Ronald MIKKENIE, Oliver STEIGELMANN, Antonio LOPEZ-JULIA, Niels Jeroen VAN DER VEEN

CPC Classification: H01S5/0087 ({for illuminating phosphorescent or fluorescent materials, e.g. using optical arrangements specifically adapted for guiding or shaping laser beams illuminating these materials})

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