I claim the ornamental design for a planetarium projector, as shown and described.
FIG. 1 is a perspective view of a planetarium projector.
FIG. 2 is a front view of the planetarium projector of FIG. 1.
FIG. 3 is a rear view of the planetarium projector of FIG. 1.
FIG. 4 is a side view of the right side of the planetarium projector of FIG. 1.
FIG. 5 is a side view of the left side of the planetarium projector of FIG. 1.
FIG. 6 is a top view of the planetarium projector of FIG. 1.
FIG. 7 is a bottom view of the planetarium projector of FIG. 1.
FIG. 8 is a perspective view of a planetarium projector illustrated in FIG. 1 with the projector fully rotated from the position illustrated in FIG. 1; and,
FIG. 9 is a front view of a planetarium projector illustrated in FIG. 2 with the projector fully rotated from the position illustrated in FIG. 2.
The broken lines shown in the figures represent portions of the planetarium projector that form no part of the claimed design.
Laser line beam emitting apparatus having functions of emission of a straight laser line beam therefrom into the area at the wide-angle, and a method thereof