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Nora NVG-31N Head-Mounted Dual-Tube Night Vision Goggles for Professional Tactical, Hunting, and Low-Light Operations
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Product Description
The Nora NVG-31N Dual-Tube Head-Mounted Night Vision Goggles feature a professional-grade optical design inspired by the ergonomic architecture of classic dual-tube night vision systems. Combining a lightweight construction, rugged housing, and outstanding low-light performance, the NVG-31N is engineered to deliver exceptional reliability and comfort in demanding environments.
The low-light version of the NVG-31N offers a wide field of view, high-resolution imaging, low optical distortion, and a stable, comfortable wearing experience. It provides clear, natural binocular vision even under extremely low-light conditions, making it ideal for extended nighttime observation and professional operations.
Built for durability and portability, the NVG-31N performs reliably in dark or low-illumination environments. It is well suited for a wide range of professional and outdoor applications, including night patrols, security and surveillance, search and rescue missions, outdoor exploration, hunting, maritime operations, and other nighttime tasks. The Nora NVG-31N is an ideal night vision solution for professionals and outdoor enthusiasts who demand dependable performance in challenging low-light conditions.
Technical Specifications
Model NVG-31N Configuration Articulating Dual-Tube Binocular Design Flip-Up Detection Automatic shut-off when flipped to the side; automatic shut-off when flipped up (optional) Power Supply 1 × CR123 lithium battery / External battery pack (4 × CR123) Operating Voltage 2.6–4.2 V Mounting Method Head-mounted (Standard U.S.-style helmet interface) Control Modes ON / IR / AUTO Power Consumption < 0.1 W Battery Capacity 800–3200 mAh Battery Life 40–100 hours Optical Magnification 1× Field of View (FOV) 50° ± 2° Optical Axis Parallelism < 0.1° Image Intensifier Gen 2+ / Gen 3 Image Intensifier Tube Objective Lens F1.18, 22.5 mm Optical MTF 120 lp/mm Optical Distortion < 1% Relative Illumination > 75% Lens Coating Ultra-Wideband Multi-Layer Anti-Reflective Coating Focus Range 250 mm – ∞ Focus Adjustment Manual Eye Relief 30 mm Exit Pupil Diameter 8 mm Diopter Adjustment 0 diopter (±5 diopters optional) Interpupillary Distance (IPD) Adjustment Continuously Adjustable IPD Adjustment Range 50–80 mm IPD Locking Manual Lock IR Illuminator 850 nm, 20 mW Operating Temperature –40°C to +55°C Humidity Range 5%–95% Ingress Protection IP65 / IP67 Dimensions Folded: 115 × 105 × 85 mm Expanded: 115 × 178 × 58 mm Weight (Without Battery) 523 g 
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