| 摘要 |
The present invention relates to a luminous device (1), comprising a light source (2) for emitting source light of a source wavelength, wherein the intensity of the source light is controllable by a signal. The device further comprises a first phosphor material (3, 4) capable of converting at least part of the source light to light of at least a first wavelength, and a second phosphor material (3, 4) capable of converting at least part of the source light to light of at least a second wavelength. The first and second phosphor materials (3, 4) are arranged to have a first and second conversion efficiency, respectively, that are controllable by the signal. The ratio of intensities of light of the first and second wavelength, respectively, is dependent on the signal. Furthermore, the present invention relates to an LED bulb, an LED package and a lighting system comprising a luminous device according to embodiments of the present invention.
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