FIG. 1 is a top perspective view of a luminaire showing the design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a left side view thereof;
FIG. 8 is a right side view thereof;
FIG. 9 is a top perspective view of a second embodiment of the luminaire showing the design;
FIG. 10 is a bottom perspective view thereof;
FIG. 11 is a front view thereof;
FIG. 12 is a rear view thereof;
FIG. 13 is a top view thereof;
FIG. 14 is a bottom view thereof;
FIG. 15 is a left side view thereof; and,
FIG. 16 is a right side view thereof.
The broken lines shown in the drawings illustrate portions of the luminaire and form no part of the claimed design. The luminaire is shown with symbolic break lines in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.