Lunar Edge B2 PVS-31 Gen 2+ with Helmet Mount
Lunar Edge B2 PVS-31: The Standard in Binocular Night Vision Performance
The Lunar Edge B2 PVS-31 is our standard binocular night vision system—trusted by professionals, operators, and enthusiasts who need high-performance optics in a compact and rugged package. Built around Carson-style lenses, the B2 offers superior image sharpness, contrast, and clarity, far beyond what traditional PVS-14-based optics can deliver. Outfitted with 1400FOM tubes and a 23 SNR rating, it provides exceptional low-light performance—and for those demanding even greater precision, an optional upgrade to 2000FOM with a 28.5 SNR rating is available. Lightweight, waterproof, and equipped with a G24-style aluminum helmet mount at no extra cost, the Lunar Edge B2 is mission-ready right out of the box.
See our video in slide two to see what our White Phosphor tubes look like. The tube is the video specs out at 1509FOM and 23.5 SNR.
ITAR Compliance Notice:
This product is subject to the International Traffic in Arms Regulations (ITAR) and may not be exported, transferred, or shared with foreign nationals without prior approval from the U.S. Department of State. Unauthorized export or disclosure is a violation of federal law and can result in severe civil and criminal penalties. For more information, please consult the ITAR regulations or contact our compliance team.
Key Features
Enhanced Imaging and Optics
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Standard configuration includes 1400FOM tubes with a 23 SNR rating for reliable clarity.
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Optional upgrade to 2000FOM / 28.5 SNR tubes for elite-level low-light performance.
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Carson-style lenses provide industry-leading sharpness, low distortion, and excellent contrast.
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Fully multi-coated glass improves light transmission and durability in harsh conditions.
Ergonomic Binocular Design
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Lightweight design at 530g (without battery) makes it ideal for long-duration use.
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Adjustable interpupillary distance (IPD) ensures precise optical alignment and image fusion.
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Rugged housing provides balance and durability in dynamic environments.
Smart and Tactical Features
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Auto shut-off when flipped up and auto power-on when flipped down to conserve energy.
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Built-in infrared (IR) illuminator enhances visibility in complete darkness.
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Simple ON/OFF/IR control system ensures quick and reliable operation.
Rugged Construction
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High-strength polymer body with an IP67 waterproof rating—reliable in rain, dust, or debris.
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Manual gain control allows brightness adjustment based on ambient light.
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Includes a G24-style aluminum helmet mount at no extra charge.
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Backup power interface allows extended use when needed.
Technical Specifications
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Magnification: 1X
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Field of View: 40°
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Eyepiece Diameter: 25mm
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Eye Relief: 25–40mm (full FOV)
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Optical Aperture: F1.18, 22.5mm
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Focus Range: 0.25m – ∞
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Diopter Adjustment: -6 to +2 SD
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Battery Type: AA
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Battery Life: 10+ hours (continuous use)
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Weight: 530g (without battery)
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Environmental Rating: IP67 Waterproof
Why Choose the Lunar Edge B2 PVS-31?
The Lunar Edge B2 PVS-31 strikes the perfect balance between rugged durability, advanced optics, and tactical versatility. With Carson-style lenses, a standard 1400FOM build, and an optional 2000FOM upgrade, it delivers outstanding value and performance across a wide range of missions. Lightweight, clear, and built to last—this is night vision done right.
Tuned for Clarity. Built for Action. Ready for Anything.
1400FOM General Tube Parameters
| Parameter | Measured Value | Unit |
| Signal-to-Noise Ratio (SNR) | 23.11 | — |
| Figure of Merit (FOM) | 1,400 | — |
| Cathode Sensitivity (2856K) | 721 | μA/lm |
| Radiant Sensitivity (800nm) | 71 | mA/W |
| Radiant Sensitivity (850nm) | 52 | mA/W |
| Max. Output Brightness | 6.07 | cd/m² |
| Luminance Gain | 10,400 | cd/m²/Lx |
| Resolution (Center) | 64 | Lp/mm |
| Resolution (Peripheral) | 64 | Lp/mm |
| M∙T∙F (2.5 Lp/mm) | 93 | % |
| M∙T∙F (7.5 Lp/mm) | 72 | % |
| M∙T∙F (15 Lp/mm) | 53 | % |
| M∙T∙F (25 Lp/mm) | 34 | % |
| Equivalent Background Illumination (EBI) | 0.18 | μLx |
| Operational Life | 10,000 | h |
| Uniformity | 1.4 | — |
2000FOM General Tube Parameters
| Parameter | Measured Value | Unit | Description |
| Signal-to-Noise Ratio (SNR) | 28.47 | — | Ratio of useful image signal to noise in low-light conditions. |
| Figure of Merit (FOM) | 2,000 | — | Calculated as Resolution (Lp/mm) × SNR: 72 × 28.47 ≈ 2000. |
| Cathode Sensitivity (2856K) | 1,000 | μA/lm | Sensitivity to visible light at a standard color temperature. |
| Radiant Sensitivity (800nm) | 91 | mA/W | Efficiency in converting infrared light at 800nm into electrical current. |
| Radiant Sensitivity (850nm) | 78 | mA/W | Efficiency in converting infrared light at 850nm into electrical current. |
| Max. Output Brightness | 6.26 | cd/m² | Maximum brightness of the display screen. |
| Luminance Gain | 10,900 | cd/m²/Lx | Amplification capability of the image intensifier under low light. |
| Resolution (Center) | 72 | Lp/mm | Ability to resolve fine details in the center of the image. |
| Resolution (Peripheral) | 72 | Lp/mm | Ability to resolve fine details at the edges of the image. |
| M∙T∙F (2.5 Lp/mm) | 92 | % | Clarity of the image at 2.5 line pairs per millimeter. |
| M∙T∙F (7.5 Lp/mm) | 73 | % | Clarity of the image at 7.5 line pairs per millimeter. |
| M∙T∙F (15 Lp/mm) | 54 | % | Clarity of the image at 15 line pairs per millimeter. |
| M∙T∙F (25 Lp/mm) | 32 | % | Clarity of the image at 25 line pairs per millimeter. |
| Operational Life | 10,000 | h | Expected lifespan of the image intensifier tube. |
| Uniformity | 1.3 | — | Brightness consistency across the entire image field. |