Patent ID: 8398273

Claim:
A luminaire, comprising: an elongated housing having a rear wall positionable proximate a support surface; the housing having an approximately triangular cross-section, and further comprising: a luminous element disposed inside the housing; a plurality of screens generally bounding portions of the luminous element and designating a respective top chamber having a top screen and a bottom chamber having a bottom screen; the screens extending generally parallel to said luminous element and being operably located at angles relative to one another for emitting direct and indirect light and closing respective top and bottom chambers, a downwardly oriented reflector for generating downwardly oriented direct light; an upwardly oriented reflector for generating upwardly oriented direct light; the reflector for generating downwardly oriented direct light, further comprising: two flat reflector surfaces disposed at angles relative to one another; the reflector for generating upwardly oriented direct light, further comprising: a reflector surface that is generally parabolically curved in a direction of the luminous element, and located oppositely said reflector surface that is generally parabolically curved in a direction of the luminous element is at least one flat reflector surface; whereby said downwardly and upwardly oriented reflectors delimit respective top and bottom chambers and direct light and in a generally funnel shape relative to an axis of the luminous element; said bottom screen further comprising bottom-screen fluting receiving a direct light from said luminous element and a reflected light and whereby a portion of the downwardly emitted light is increased in relation to a laterally emitted light; and said top screen further comprising a top-screen fluting and receiving said direct light from said luminous element and said reflected light and diffusely scattering said direct light and said reflected light.