a special force soldier using modern binocular night vision in the darkness. close up

analog background battery binocular black close converter copy darkness dimensions electronics electronoptical equipment ergonomics finland focus force forces goggles head helmet hunting illumination illuminator imaging infrared innovation intensification lens life magnification man military modern monocular mount navigation night nvd operation optics phosphor photocathode power professional range rescue resolution scope screen search security soldier source space special surveillance technology thermal vision weight young