The ornamental design for a luminaire, as shown and described.
FIG. 1 is a perspective view of a luminaire, showing our new design;
FIG. 2 is a front elevation view thereof. The right-side elevation view, rear elevation view, and left-side elevation view are identical to the front elevation view;
FIG. 3 is a bottom plan view thereof; and,
FIG. 4 is a top plan view thereof.
The broken lines shown represent unclaimed subject matter and form no part of the claimed design.
CORRECTIVE ASSIGNMENT TO CORRECT THE COVER SHEET TO REMOVE APPLICATION NO 15567271 PREVIOUSLY RECORDED ON REEL 048207 FRAME 0819 ASSIGNOR S HEREBY CONFIRMS THE ASSIGNMENT