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Nora NVG-31L Head-Mounted Dual-Tube Binocular Night Vision Goggles for Professional Tactical, Security, Hunting, and Low-Light Operations
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Product Description
The Nora NVG-31L Dual-Tube Head-Mounted Night Vision Goggles are a high-performance night vision system inspired by the renowned PVS-31 design. Engineered for professional users, the NVG-31L delivers exceptional low-light performance with an ultra-wide field of view, high-definition image clarity, minimal optical distortion, lightweight construction, and a rugged, high-strength housing. Its overall performance has been significantly enhanced to exceed that of the original platform.
Designed for operation in environments with little or no ambient light, the NVG-31L provides reliable situational awareness and enhanced depth perception, making it an ideal solution for demanding nighttime applications. Whether used for tactical missions, law enforcement, security patrols, outdoor hunting, wilderness exploration, maritime operations, search and rescue, or other professional nighttime tasks, the NVG-31L offers dependable performance, superior comfort, and long-lasting durability in the most challenging conditions.
Technical Specifications
Model NVG-31L Configuration Articulating Dual-Tube Binocular Design Flip-Up Detection Automatic Flip-Up Power-Off Power Supply 1× CR123 Lithium Battery / External Battery Pack (4× CR123) / AA Battery Operating Voltage 2.6–4.2 V Mounting Helmet-Mounted (Standard US 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) 40° / 50° ±2° Optical Axis Parallelism < 0.1° Image Intensifier Gen 2+ / Gen 3 Image Intensifier Tube Objective Lens Aperture F1.18, 22.5 mm Optical MTF 120 lp/mm Optical Distortion < 1% Relative Illumination > 75% Optical Coating Ultra-Wideband Multi-Layer Anti-Reflective Coating Focus Range 250 mm to Infinity Focus Adjustment Manual Eye Relief 30 mm Exit Pupil Diameter 8 mm Diopter Adjustment 0 Diopter (±5 Diopter Optional) Interpupillary Distance (IPD) Adjustment Continuously Adjustable IPD Adjustment Range 50–80 mm IPD Lock Manual Lock Built-in IR Illuminator 850 nm, 20 mW Operating Temperature -40°C to +55°C Humidity 5%–95% Waterproof Rating IP65 / IP67 Dimensions 126 × 107 × 90 mm (Without Eyecups) Weight (Without Battery) 414 g 
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