Patent ID: 8348488

Claim:
An LED-driven luminaire arrangement, comprising: a) an elongated, single, non planar, solid luminaire having non planar side-light emitting portion elongated along a longitudinal axis of said luminaire for emitting light from the side of the luminaire to two non-overlapping target areas; b) the side-light emitting portion being formed by an extractor of light comprising first and second Lambertian light-extraction regions, wherein the first and second light-extraction regions— i) are spaced from each other around a perimeter of said side-light emitting portion taken orthogonally to a main optical axis of said side-light emitting portion; ii) are arranged along a single axial length of said side-light emitting portion to extract a first beam of light and a second beam of light from the luminaire and respectively and preferentially direct said beams of light in a first radial direction and a second radial direction with respect to said longitudinal axis for illuminating the two non-overlapping target areas along said longitudinal axis; c) each of the first and second light-extraction regions being spatially divided in segments along said longitudinal axis with gaps between the segments, wherein, with respect to a majority of said segments of each of the first and second light-extraction regions— i) respective lengths of the gaps along said longitudinal axis are greater than radial width of their respective light-extraction region and are also at least 20% of length of a neighboring segment along said axis; and ii) the respective gaps of an adjacent light-extraction region are each aligned with at least 20% of the length of a respective segment of the an adjacent light-extraction region along said axis; d) said solid luminaire being free of cladding with a lower refractive index than said solid luminaire; and e) at least one LED for supplying light to the luminaire; and f) a non-imaging collector for coupling light from the at least one LED into the luminaire.