FIG. 1 is a top perspective view of a reflector for a luminaire showing our new invention.

FIG. 2 is a bottom perspective view of the reflector of FIG. 1.

FIG. 3 is a side elevation view of the reflector of FIG. 1.

FIG. 4 is a top plan view of the reflector of FIG. 1; and,

FIG. 5 is a bottom plan view of the reflector of FIG. 1.

Portions or features of the reflector not shown in the drawings form no part of the claimed design. The broken lines shown in the drawings illustrate environmental structure and unclaimed portions of the reflector for a luminaire and form no part of the claimed design.