Alpha Optics AO-3251/3351 NV Goggles

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Alpha Optics AO-3251/3351 NV Goggles

Key Features:

- Compact, lightweight, rugged

- Dual-tube design

- True stereoscopic vision

- Head or helmet mounted

- Built-in IR illuminator

- Waterproof

- Automatic bright light shut off

- Comfortable flip-up headgear

- Ergonomic, simple, easy to operate control

- Nitrogen purged

- Hard waterproof case included

PDF icon Download Spec Sheet (750.3 KB)
Magnification 1x (3x – optional)
Image Intensifier TubeGen 2+ and Gen 3
Field of View51°
Lens System19 mm; F/1.26
Focus Range0.25 m to infinity
Eye Releif17 mm
Diopter Adjustmentfrom -6 to +2
Led IndicatorsLow battery; IR-ON; excessive light
Infrared IlluminatorYES; Two power levels
Battery TypeOne CR123A (3V) or AA (1.5V)
Battery LifeUp to 20 hours at 20°
Operating temperature-40°C to +50°C
Environmental RatingWaterproof
Dimensions (L x W x H)112 x 118 x 74 mm
Weight615 g


The Alpha Optics AO-3251/3351 is a dual-channel night vision system. With a 51° field of view (FOV), it provides a large visual field without needing to move the binoculars. The AO-3251/3351 uses advanced multi-coated optics and is built to last with a compact composite housing. Operating from a single AA alkaline battery or CR123A battery, it can run up to 20 hours. Also equipped with an integral infrared illuminator for reading in the dark. For hands-free operation, the device includes head and helmet mounting options, it can be used as binoculars, as a monocular, goggles or stowed out of the way. Operated by a single gain control knob, the AO-3251/3351 utilizes features like a flip-up-turn-off, and a flip-down-turn-back-on option when mounted to a helmet.