06234648 is referenced by 446 patents and cites 3 patents.

A lighting system includes at least two light-emitting diodes each emitting, in operation, visible light in a preselected wavelength range. A converter converts part of the visible light emitted by one of the diodes into visible light in a further wavelength range so as to optimize the color rendition of the lighting system. The diodes include a blue light-emitting diode and a red light-emitting diode. Further, the converter includes a luminescent material for converting a portion of the light emitted by the blue light-emitting diode into green light.

Title
Lighting system
Application Number
9/406284
Publication Number
6234648 (B1)
Application Date
September 24, 1999
Publication Date
May 22, 2001
Inventor
Gerard Harbers
s'Hertogenbosch
US
Cornelis R Ronda
Aachen
US
Hans Nikol
Aachen
US
Thomas Jüstel
Aachen
US
Wolfgang Busselt
Roetgen
US
Herbert F Börner
Aachen
US
Agent
Dicran Halajian
US
Assignee
U S Philips Corporation
NY, US
IPC
H05B 43/00
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