Laser-based light source with heat conducting outcoupling dome

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United States of America Patent

PATENT NO 10443800
SERIAL NO

16313593

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Abstract

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The invention describes a laser-based light source comprising:

    a laser being arranged to emit laser light,a ceramic light converter being adapted to convert a part of the laser light to converted light,a light outcoupling dome with a base area of at least 2.5*105 μm2 comprising a material with a thermal conductivity of more than 25 W/(m*K), wherein a bonding area of the light outcoupling dome of at least 8*103 μm2 is adhesive-free bonded to the ceramic light converter, wherein the base area is at least 25 times larger than an area of the ceramic light converter being arranged to be illuminated by the laser,a substrate thermally coupled to the light outcoupling dome,wherein the light outcoupling dome comprises a reflective structure being arranged such that converted light emitted with an angle larger than α=65° with respect to an optical axis of the light outcoupling dome is reflected back in the direction of the ceramic light converter.

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Patent Owner(s)

Patent OwnerAddress
LUMILEDS LLC370 WEST TRIMBLE ROAD SAN JOSE CA 95131

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hechtfischer, Ulrich Aachen, DE 14 8
Zozgornik, Steffen Leverkusen, DE 11 1

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