The ornamental design for a projector, as shown and described.
FIG. 1 is a front, right side, top perspective view of a projector showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view thereof, showing a state in which a lens cover is closed.
The dash-dot line immediately adjacent to shaded areas represent the bounds of the claimed design while all other broken lines showing portions of a projector are included for the purpose of illustrating environmental structure and form no part of the claimed design; none of the broken lines form part of the clamed design.