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1. (WO2015124427) LED ON CERAMIC ELEMENT

Pub. No.:    WO/2015/124427    International Application No.:    PCT/EP2015/052285
Publication Date: Fri Aug 28 01:59:59 CEST 2015 International Filing Date: Thu Feb 05 00:59:59 CET 2015
IPC: H01L 33/60
H01L 25/075
Applicants: OSRAM GMBH
Inventors: GHASEMI AFSHAR, Farhang
KALTENBACHER, Axel
GAREIS, Robert
Title: LED ON CERAMIC ELEMENT
Abstract:
The invention relates to an LED module comprising an LED (1) and a ceramic element (2) as a substrate on which the LED (1) is arranged. The ceramic element is at least translucent in such a way that at least some of the backscattered light which is incident on the top face (7) of the ceramic element is transmitted to the opposite bottom face (8) of the ceramic element, whereupon a large portion of the backscattered light transmitted to the bottom face (8) is reflected so as to increase the luminous efficacy of the LED module.