I claim the ornamental design for an optical transmission-conversion device for producing a magnified image, as shown and described.
FIG. 1 is a front perspective view from one side of an optical transmission-conversion device for producing a magnified image according to the present invention, illustrating a controller thereof in a storage position.
FIG. 2 is a left side elevational view of the optical transmission-conversion device for producing a magnified image of FIG. 1.
FIG. 3 is a right side elevational view of the optical transmission-conversion device for producing a magnified image of FIG.
FIG. 4 is a top plan view of the optical transmission-conversion device for producing a magnified image of FIG. 1.
FIG. 5 is a rear perspective view, from the bottom, of the optical transmission-conversion device for producing a magnified image of FIG. 1; and,
FIG. 6 is another front perspective view of the optical transmission-conversion device for producing a magnified image of FIG. 1, illustrating the controller removed from the storage position and environmental structure in the form of a monitor mounted thereto.
Features illustrated in broken lines in the Figures depict environmental structure only and form no part of the claimed design.