Transmission Device for Quantum Key

FIG. 1 is a top front right perspective view of a transmission device for quantum key showing our new design; FIG. 2 is a front elevational view thereof; FIG. 3 is a rear elevational view thereof; FIG. 4 is a left side view thereof; FIG. 5 is a right side view thereof; FIG. 6 is a top plan view thereof; FIG. 7 is a bottom plan view thereof; FIG. 8 is a cross-sectional view thereof, taken in the direction of line 8 - 8 of FIG. 2 (an internal mechanism is omitted); and, FIG. 9 is a partially enlarged view of portion ‘ 9 ’ in FIG. 8 . The even-dash broken lines shown in the drawings illustrate portions of the transmission device for quantum key that form no part of the claimed design. The broken lines consisting of short and long-dashed lines in FIGS. 2 and 8 - 9 denote the section cut line and the perimeters of the enlarged detail views and form no part thereof.