Outdoor illumination fixture

FIG. 1 is a front perspective view of an outdoor illumination fixture which embodies our 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 right side view, the left side view thereof being a mirror image thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in FIG. 4 depict environment only and form no part of the claimed design.