Patent ID: 7659545

Claim:
An illumination system comprising: a mounting substrate ( 4 ) for mounting and electrically contacting a plurality of light-emitting diodes (R, A, G, B), a first category of the light-emitting diodes (G, B) comprising a first translucent substrate ( 11 ) provided with an active layer ( 1 ) on an outer surface ( 13 ) of the first translucent substrate ( 11 ) facing the mounting substrate ( 4 ), electrical contacts being provided at a side facing the mounting substrate ( 4 ), a second category of the light-emitting diodes (R, A) comprising an active layer ( 2 ) arranged on a second translucent substrate ( 12 ), at least one electrical contact being provided at a side facing away from the mounting substrate ( 4 ), each light-emitting diode (G, B) of the first category being provided on a first sub mount ( 21 ), each light-emitting diode (R, A) of the second category being provided on a second sub mount ( 22 ), the first ( 21 ) and the second ( 22 ) sub mount being provided on the mounting substrate ( 4 ).