The ornamental design for a universallensadapter, as shown and described.
FIG. 1 is a front and right perspective view of a universal lens adapter showing my new ornamental design;
FIG. 2 is a rear and left perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a left elevational view thereof; and,
FIG. 8 is a right elevational view thereof.
The material shown in FIGS. 1-8 of the drawings with dotted lines does not form part of the design of the disclosed universal lens adapter, but is included to show unclaimed features with which the subject inventive designs may be utilized.