LIGHTING SYSTEM

摘要

The lighting system (1) has at least two light-emitting diodes (6, 6', ...; 7, 7', ...) for providing visible light at preselected wavelengths. The invention is characterized in that the lighting system (1) is provided with conversion means (10) for converting part of the visible light emitted by one of the light-emitting diodes (6, 6', ...) into visible light in a further wavelength range for optimizing the color rendition of the lighting system (1). Preferably, the conversion means (10) comprise a luminescent material which is sensitive to light originating from a wavelength range from 400 to 500 nm. In a preferred embodiment, the two light-emitting diodes (6, 6', ...; 7, 7', ...) comprise a blue light-emitting diode (6, 6', ...) and a red light-emitting diode (7, 7', ...), and the conversion means (10) comprise a luminescent material which can be excited by blue light and which converts blue light to green light. In another preferred embodiment, the luminescent material is sensitive to light originating from a wavelength range from 500 to 560 nm. In a preferred embodiment, the two light-emitting diodes comprise a blue light-emitting diode and a green light-emitting diode, and the conversion means comprise a luminescent material which can be excited by the green light and which converts said green light to red light.