The ornamental design for a luminaire, as shown and described.
FIG. 1 is an elevational front view of the luminaire according to the invention where the rear portion of the housing is formed with an array of part-spherical cup-shaped recesses;
FIG. 2 is an elevational rear view of the luminaire;
FIG. 3 is a top view of the luminaire;
FIG. 4 is a bottom view of the luminaire;
FIG. 5 is a left-side view of the luminaire;
FIG. 6 is a perspective view from above, in front, and to the right of the luminaire; and,
FIG. 7 is a perspective view from below, behind, and to the left of the luminaire.
The broken lines shown in the drawings are for the purpose of illustrating unclaimed portions of the luminaire and form no part of the claimed design.