We claim the ornamental design for clip-on belay glasses, as shown and described.
FIG. 1 shows a perspective view of the invention, attached to a sample pair of eyeglasses.
FIG. 2 is a second perspective view of the invention attached to a sample pair of eyeglasses. This figure depicts the embodiment as seen from below and to the side.
FIG. 3 is a perspective view, shown without eyeglasses.
FIG. 4 is a front view of the invention.
FIG. 5 is a top view of the invention.
FIG. 6 is a back view of the invention (i.e., as seen from the viewpoint of the eyeglass wearer).
FIG. 7 is a bottom view of the invention.
FIG. 8 is a left side view of the invention. The right side is substantially a mirror image of the left side; and,
FIG. 9 is an exploded view, showing right and left optical prisms, right and left prism supports/eyeglass clips; and transverse support.
Dashed lines (e.g., the eyeglasses of FIGS. 1 and 2) are directed to environment and form no part of the invention.