Afocal device for soldiers e.g. doughboys, has mechanical frame including cylindrical opening and interface whose axis lies perpendicular to optical axis, where device is mounted on mechanical interface

摘要

The device (1) has a convergent lens and a divergent lens arranged with respect to an optical axis. A mechanical frame includes a cylindrical opening and an interface whose axis lies perpendicular to the optical axis. The device is mounted on a mechanical interface (17) that is fixed on a mechanical structure (3), and a display device (2) has its axis arranged with respect to the mechanical structure.