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Helmet with Ground Owl™ Goggles

Technical Information

Catalogue No: C0997
Category: Head-Mounted Equipment [HMD/NVG/Glasses]
Object Type: Display Unit
Object Name: Helmet with Ground Owl™ Goggles
Part No: ?
Serial No: 021
Manufacturer: Unknown
Division: Unknown
Year of Manufacture: Unknown
Dimensions: Width (mm): 270
Height (mm): 240
Depth (mm): 340
Weight (g): 1,745
Location: Rack RAA15 (HMDs) [Mezzanine Store]

Helmets Limited, Wheathampstead, Hertfordshire, England
S/No 021
[badge 1]
GEC Avionics
Night Owl
[badge 2]
Cats Eyes
GEC Avionics


The Night Owl™ Night Vision System was developed primarily for helicopter use. The Goggles consist of two identical channels, each channel comprising an objective lens, image intensifier (Generation 2 or 3) and an eyepiece assembly. The two channels interface with a cross-slide assembly which ensures correct orientation of the channels and also provides interpupillary and tilt adjustment. The cross-slide assembly interfaces with the helmet mount which provides the fore/aft adjustment flip up capability and vertical adjustment. Incorporated within the helmet mount is the power source of two batteries and a three position switch to select power on/off and standby.
The large (25mm) eye relief allows excellent peripheral vision and good ‘look under’ capability for look around monitoring. The unit weight is about 700gms and this set of NVG is on an Alpha Helmet with model binocular Ground Owl™ Goggles. It is not believed that there were any sales of this version.
The design originated with Ferranti and in turn that work derives from work done at the RAE.

A full specification will be found in the brochures D0032.

The Ground Owl™ Modular Night Vision System is a modular design with a range of options and applications from the core system including:

  • Hand held night viewing
  • Monocular or binocular configuration
  • Hands free use with head mounted system
  • Range of magnification options
  • Camera mounting
  • Rifle Mounting
  • Infra Red Torch for absolute darkness operation

The core of the system is a monocular assembly which, with its self-contained power supply, can be used as a lightweight hand held viewing device. The complete system comprises the following components from which can be selected any combination to suit customer requirements:

  • Monocular Assembly,
  • x3 Magnifier,
  • x2 Adaptor,
  • Binocular Housing,
  • Head Mount,
  • NATO Gunrail Adaptor,
  • Camera Adaptor,
  • Nikon Lens Adaptor,
  • Daylight Filters.

The assembly can be combined with another monocular assembly to form a binocular system which can be hand held or head mounted.

The Ground Owl™ system is in service with the UK Armed Forces.

A full specification will be found in the brochures.

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