The ornamental design for a lightprojector, as shown and described.
FIG. 1 is a front elevational view of a light projector showing my new design;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is rear elevational view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a front and side perspective view thereof; and,
FIG. 7 is a front and side perspective view thereof, showing the light projector in a second operative position wherein the telescopic lens hood is visible.
The broken line disclosure represents portions of the projector which form no part of the claimed design.