CPC F21V 5/043 (2013.01) [F21S 4/20 (2016.01); F21Y 2103/10 (2016.08); F21Y 2103/30 (2016.08); F21Y 2115/10 (2016.08)] | 13 Claims |
1. An illumination device comprising:
a plurality of light-emitting elements (LEEs);
a transparent elongate optical element including one or more cavities arranged along an elongation direction of the optical element, wherein the optical element is arranged to receive light from the LEEs through a surface extending along the elongation direction, the surface being between the LEEs and the one or more cavities; and
one or more phosphor elements arranged to receive light from the LEEs and configured to convert at least a portion of the received light into light having a second spectral power distribution different from a first spectral power distribution of the light received from the LEEs,
wherein the optical element comprises one or more indentations and the phosphor elements are arranged in the one or more indentations.
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