The ornamental design for a opticalunit for medicaldevice, as shown and described.
FIG. 1 is a left side elevational view of an optical unit for medical device according to the present invention.
FIG. 2 is a right side elevational view of the optical unit for medical device of FIG. 1.
FIG. 3 is a front elevational view of the optical unit for medical device of FIG. 1.
FIG. 4 is a rear elevational view of the optical unit for medical device of FIG. 1.
FIG. 5 is a top plan view of the optical unit for medical device of FIG. 1.
FIG. 6 is a bottom plan view of the optical unit for medical device of FIG. 1; and,
FIG. 7 is a three quarter view of the optical unit for medical device of FIG. 1.
The broken lines immediately adjacent the shaded areas represent the bounds of the claimed design while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.