Patent ID: 7556402

Claim:
A direct-indirect luminaire, comprising: a pair of lamp sockets for receiving at least one tubular fluorescent lamp; a louver, arranged on one side of the lamp sockets, for controlling downlight emitted from a bottom side of the luminaire; and a shutter, arranged on an opposite side of the lamp sockets, for controlling uplight emitted from a top side of the luminaire, wherein the shutter comprises: a first member comprising a first plurality of apertures disposed longitudinally along the first member; and a second member comprising a second plurality of apertures disposed longitudinally along the second member, the first member positioned adjacent to the second member and slidable relative to the second member; wherein at least a portion of each of the first plurality of apertures overlaps at least a portion of each of the second plurality of apertures, the overlap creating a light pathway for emitting light through the overlap in the apertures and out of the top side of the luminaire.