The ornamental design for a fastener for opticalarticles, as shown and described.
FIG. 1 is a perspective top view of my new fastener for optical articles;
FIG. 2 is a perspective top view of my new fastener for optical articles from the end opposite that of FIG. 1;
FIG. 3 is a side elevational view of my new fastener for optical articles;
FIG. 4 is a side elevational view of my new fastener for optical articles from the side opposite that of FIG. 3;
FIG. 5 is an end view of my new fastener for optical articles from the end appearing at the left side of FIG. 1;
FIG. 6 is an end view of my new fastener for optical articles from the end appearing at the left side of FIG. 2;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken line showing of the four circular elements each depicted in FIG. 8 by two concentric circles is for the purpose of illustrating environmental structure and forms no part of the claimed design.