Abstract: A light emitting panel assembly is provided. The assembly includes: a light source; a transition area including a first major side and a second major side, wherein at least one of the first major side and the second major side includes a plurality of vertically extending flutes, wherein the flutes extend at least a portion of the height of the transition area; and an emission area in optical communication with the transition area, the emission area including light extraction elements.

Abstract: A system for connecting luminaires is provided. The system includes: a first luminaire having an end face having a first slot; a second luminaire having an end face having a second slot; a first elongated joining member having first prongs. The first slot and second slot are in laterally aligned and joined relationship define a first joining member slot having a first wedged end, and the first wedged end is shaped to provide an interference fit with the first prongs wherein advancing the first prongs against the first wedged end forces the first slot and the second slot toward each other to tighten connection between the first luminaire and the second luminaire.

Abstract: A light emitting panel assembly is provided. The light emitting panel assembly includes: a housing; a light guide within the housing, the light guide having a first major surface with a plurality of extraction elements, a second major surface, a lower surface, an upper surface, a light source adjacent to the lower surface of the light guide; and an upper guide reflector having a diffuse reflective surface adjacent to and facing the upper surface of the light guide, whereby light from the light source traveling through the light guide toward the upper guide reflector spreads within the light guide, and whereby the upper guide reflector homogenizes the light before the light is redirected to the light guide. A luminaire comprising such a light emitting panel assembly is also provided.

Abstract: A light guide includes: a first major surface; a second major surface opposite the first major surface; an array of extraction elements, each element disposed between an upper and lower edge of the first major surface, each upper and lower edge defining a plane therebetween, each element including: a first face adjoining the upper edge, the first face projecting inwardly relative to the plane at a first angle; a second face adjoining the first face, the second face projecting inwardly at a second angle relative to the plane, the second angle greater than the first angle; a third face adjoining the lower edge and the second face, the third face projecting inwardly relative to the plane at a third angle, the third angle greater than the first angle; wherein the first face, second face and third face define an indentation projecting inwardly from the plane defined by the first major surface.

Abstract: A light guide is provided. The light guide includes a first major surface comprising an array of Z-shaped extraction elements. Each Z-shaped extraction element includes: a first face; a second face adjoining the first face, wherein the first face and an upper portion of the second face define an indentation projecting inwardly from a plane defined by the first major surface; and a third face adjoining the second face, wherein the third face and a lower portion of the second face define a protrusion projecting outwardly from the plane defined by the first major surface.