ILLUMINATION DEVICE WITH MULTI-COLOR LIGHT-EMITTING ELEMENTS
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Abstract
A variety of illumination devices for general illumination utilizing solid state light sources (e.g., light-emitting diodes) are disclosed. In general, an illumination device can include multiple light sources that are disposed on a substrate, where at least some of the light sources include a light-emitting diode (LED) and a corresponding inelastic scattering element surrounding, at least in part, the LED. The inelastic scattering elements can have different light emission spectra. The illumination device can further include a light-mixing element adapted to receive light that is output by the light sources, where, during operation of the illumination device, each inelastic scattering element inelastically scatters light emitted from its corresponding LED, and the light-mixing element mixes the light received from the inelastic scattering elements to provide the output light.
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Citations
63 Claims
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1-24. -24. (canceled)
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25. An illumination device for generating output light, comprising:
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a substrate having a first surface; a plurality of light sources disposed on the first surface and arranged separate from each other, each of the light sources comprising a pump light and an inelastic scattering element arranged to receive light from the pump light and being configured to generate colored light having a color light emission spectrum that is wider than a main peak included in a spectrum of light emitted by the pump light, wherein at least two inelastic scattering elements have different color light emission spectra; and a light-mixing element adapted to receive light that is output by the plurality of light sources, wherein, during operation of the illumination device, each inelastic scattering element inelastically scatters light from its corresponding pump light, and the light-mixing element mixes light received from the plurality of inelastic scattering elements to provide the output light. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 59, 60, 61, 62, 63)
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42-58. -58. (canceled)
Specification