Fero D-51

The Fero D-51 is a dual-tube, Generation 2+ binocular night vision device produced from the mid-1980s to the late 1990s for the German Army (Bundeswehr) by AEG-Telefunken (Germany), Eltro (Zeiss Group) and De Oude Delft (Netherlands). Known for its high durability and heavy weight, the D-51 was a key Cold War-era optic that provided true stereoscopic, 1x magnification imaging. Introduced in the mid-1980s, the D-51 served as a standard-issue night vision goggle for German forces throughout the late Cold War period and into the late 1990s.

The Fero D-51 is significant for utilizing early Gen 2+ image intensifier tubes (notably Phillips XX1441 tubes), offering much better performance than Gen 1 options like the earlier Fero 52. The device is known for being heavy by modern standards, weighing approximately 850 grams. It is a dual-tube night vision goggle designed to allow true, three-dimensional depth perception during nighttime operations. The goggles were used with a rigid plastic "skull crusher" face mask, which relies on tension against the user's cheekbones for stability rather than a helmet, often featuring a direct power cut-off function when tilted upward. The NVD is encased in a polymer shield with rubber armor and is waterproof. In modern pop culture, the Fero D-51 gained cult status for being used as a prop in the 1986 film Aliens (as the "Infrared Binoculars" used by Colonial Marines) and in the 1987 James Bond film The Living Daylights.