EFFICIENT LUMINAIRE WITH DIRECTIONAL SIDE-LIGHT EXTRACTION

摘要

Luminaire with directional side-light extraction comprises a light pipe with a light--carrying core, and with a light-extraction structure along a first longitudinal side of the luminaire, confined to a radial swath of the luminaire, along the longitudin al axis of the luminaire, of substantially less than 180.degree.. The second end of the lig ht pipe has light-saving means for directing saved light from the second end towards the first end. T he light--extraction means is adjustable to accommodate angular distributions of light from vario us light sources.