светотехника со светомаскировочными устройствами(для фар, габаритных и сигнальных огней автотранспорта и бронетанковой техники: Blackout lights are head and tail lamps that are equipped with special lenses that are designed to cast a diffused horizontal beam of light for the driver of the vehicle to navigate with, and drivers of other vehicles to spot the vehicle with. In the military, they are intended for use when driving a convoy at night when it is necessary for the vehicles to maintain concealment by limiting their ability to be seen by the enemy.wikipedia.orgPX_Ranger)
