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Night Vision Goggles/Image Intensifier Set AN/AVS-9 (F4949 Series)

ITT Industries Night Vision, the world's leading producer of Generation (Gen) 3 night vision devices, offers the AN/AVS-9 (ITT F4949 Series) Night Vision Goggle/Image Intensifier Set with various objective lens filter options and various flight helmet-mount configurations – all designed to meet individual customer requirements.

Features and Benefits

Gen 3-tube performance offering high resolution, high gain, and photoresponse to near infrared, and exceptional reliability.  

Class A, B, C, and UK 645 minus-blue filters for objective lens available to suit all types of cockpit lighting, including color displays and fighter HUDs.

Helmet mount configurations designed for fixed-wing and rotary-wing applications, adapting to most aviator helmets (U.S. HGU-55/P, HGU-56/P, HGU-84/P, SPH-4AF, SPH-4B, SPH-5; British Alpha 202 and Mk4; French OS and CGF). Other mounts available upon request.

25-mm eye-relief eyepieces easily accommodate eyeglasses.

Low-profile battery pack improves aviator head mobility and increases battery life.

Other features include flip-up/flip-down capability, simple binocular attachment, individual interpupillary adjustment, tilt, vertical and fore-aft adjustments to fit all aviators.

Standard Accessories: Carrying case tailored to system, lens caps Lens paper Operator’s Manual Helmet attachment instructions, Neck cord (rotary-wing versions) Low-profile battery pack (rotary wing versions)

Optional Accessories: Battery pack adapter (fixed-wing versions), Low-profile battery pack (fixed-wing versions), Clip-on power source.

Rotary-wing versions of the F4949 feature a rear-mounted, low-profile battery pack, which uses four AA alkaline batteries, allowing operation for more than 50 hours. Power is provided by a cable extending from the battery pack, over the helmet, and into a connector in the mount.

Fixed-wing versions feature a front-mounted battery pack, which uses two 1/2 AA lithium batteries that allow operation for more than 16 hours. An optional battery pack adapter enables connection of the fixed-wing F4949 to the rear-mounted battery pack, providing the same operational time as the rotary-wing versions when ejection is not a consideration. An optional clip-on power source enables hand-held operation of the binocular without use of a flight helmet.

ITT's F4949 series of aviator's night vision systems is available in over 40 different configurations. The type of aircraft and type of helmet being used will determine which configuration – existing or customized – will best meet our customer's requirements.

Specifications:

Spectral Response Visible to 0.90 μm (IR)

Field of View 40° nominal

Magnification Unity

Resolution 1.3 cy/mr, minimum (1.36 typical)

Brightness Gain 5500 fL/fL, minimum

Collimation ≤1° convergence

≤0.3° divergence/divergence

Interpupillary Adjustment Independent, 51 to 72 mm total

Vertical Adjustment 25 mm, range

Fore-and-Aft Adjustment 27 mm, range

Tilt Adjustment 10°, range

Objective Lens EFL 25 mm F/1.23, T/1.35

Objective Lens Filters Class A, B, C, UK 645 available

Objective Lens Focus Range 41 cm to infinity

Eyepiece Lens EFL 27 mm

Eyepiece Exit Pupil/Eye Relief On-axis: 14 mm @ 25-mm distance

Full-field: 6 mm @ 25-mm distance

Eyepiece Adjustment +2.0 to -6.0 Diopters

Flip-up/Flip-down Button release

Automatic Breakaway 11 to 15 g

Battery Type Fixed wing: 2 ea. 1/2 AA size, lithium

Rotary wing: 4 ea. AA size, alkaline

Weight of Binocular 550 grams

Weight of Mount

Fixed Wing 250 grams

Rotary Wing 330 grams

Operating Temperature Range -32°C to +52°C