Fero D51

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The Fero D51 is a second generation binocular device that was used by the German Bundeswehr. It can be worn head - mounted through the use of a proprietary cap or adapted to a standard dovetail. It is the German analogue to the American AN/PVS-5.


Fero D51
Fero D51 image
Manufacturer(s)

Fero (D51)

Phillips (BM8028)

Type Binocular
Tube Format XX1411 43mm inverting
FoV 47° / 47°
Mount Proprietary
Objective(s) Proprietary
Eyepiece(s) Proprietary


Features[edit | edit source]

  • 2 AA battery compartment
  • Objective lenses are coupled, adjusting one lens also changes the other by the same amount
  • IR Illuminator and indicator
  • Adjustable interpupillary distance
  • Demist shields for eyepieces

Notes[edit | edit source]

The D51 uses XX1411 43mm inverting image intensifiers with plate contacts.

The objective lens, image intensifier and eyepiece are combined into two separate pods which are then enclosed in an outer plastic body. The position of the pods inside the body can be adjusted by releasing a locking lever on the underside of the unit, pushing the pods into the correct position, then applying the lever.

It is supplied in a metal case which contains a carrying bag, the device, head strap, spare parts and documentation.

Aviation version BM8028A[edit | edit source]

In addition to the standard configuration, there exists a version intended for aircraft use. The outer plastic shell has been redacted and the power source moved to a separate battery pack.

Further Reading[edit | edit source]

https://cdn.discordapp.com/attachments/808646082522644500/1184521442574991451/Screenshot_20231213_163831_Gallery.jpg?ex=66e8fb4f&is=66e7a9cf&hm=080a270b10a8c5957354553c29cf6af8a87ba40c21569673a95ece9bcdc8163b&

https://cdn.discordapp.com/attachments/808646082522644500/1184521442918940794/Screenshot_20231213_163853_Gallery.jpg?ex=66e8fb4f&is=66e7a9cf&hm=d4b308e0e8e0f2bcd04cce97f17a7cc1f1c12d0a65ba1565bb14f5f4859d1059&