Luminaire

FIG. 1 is a side elevation view of the luminaire showing our new and ornamental design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is an alternate side elevation view thereof;

FIG. 4 is a back elevation view thereof;

FIG. 5 is a front top perspective view thereof;

FIG. 6 is a back top perspective view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom back perspective view thereof; and,

FIG. 9 is a bottom plan view thereof.

The portions of the luminaire shown in broken lines in the figures attached hereto form no part of the claimed design.