Theon Fenix FCS Thermal Fire Control Sight for Vehicle-Mounted Machine Gun with 3 km Laser Rangefinder and Integrated Ballistic Computer

The Theon Fenix FCS is the fire control sight designed to give the heavy machine gun gunner in a light armored vehicle — armored Land Rover, TATRA 4×4 truck with gun ring, or fixed fire position in perimeter bunker — the capability to identify, range, and apply ballistic correction on targets in total darkness and degraded visibility conditions, matching in nighttime fire capability combat platforms of higher cost that incorporate FCS as a factory-integrated system.

The 640×480 pixel uncooled LWIR thermal sensor with 35 mK NETD provides person detection at 1.2 km and combat vehicle recognition at 2.1 km with 2-8× continuous optical zoom — the gunner adjusts magnification with a single side control without releasing the weapon, moving from 18° panoramic field of view for area search to 4.5° narrow field for target identification and ballistic correction application. The integrated Class 1 (eye-safe) monocular laser rangefinder measures target distance in a single pulse with ±1 meter accuracy in the 50 to 3000 meter range, transmitting the measured distance directly to the internal ballistic computer without gunner intervention.

The integrated ballistic computer stores firing tables for 12.7×99mm NATO heavy machine gun and 7.62×51mm NATO medium machine gun, and calculates in real time the elevation and windage correction combining laser-measured distance, integrated sensor ambient temperature, barometric pressure, and operator-estimated wind speed and direction — presenting the correction as a calculated impact point superimposed on the thermal image of the target on the 1024×768 OLED display. The gunner applies the correction by positioning the calculated reticle over the target and fires without mental calculation or printed correction table.