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NVG-40/50 / L3Harris 18UM / 18UA is a modern entry-level professional night-vision system that combines the proven NVG-40/50 housing with unfilmed L3Harris 18UM / 18UA tubes.
This configuration is intended for users seeking a high-quality Gen 3 White Phosphor solution with excellent stability and reliability at a more accessible price.
The unfilmed (Unfilmed) technology provides reduced noise, fast auto-gating response, and natural light transmission, making the system suitable for most night-time observation scenarios.
⚙️ Technical Specifications
| Parameter | Value |
|---|---|
| Housing | NVG-40/50 (adjustable binocular, ANVIS-compatible, IP67) |
| Tube Type | L3Harris 18UM / 18UA Unfilmed White Phosphor |
| Phosphor | P45 (white) |
| Tube Format | MX-10160 / MX-11769 |
| Figure of Merit (FOM) | ≈ 1800+ |
| Signal-to-Noise Ratio (SNR) | ≥ 24.1 |
| Resolution (RES) | ≥ 64 lp/mm |
| Halo | ≤ 1.0 |
| EBI | ≤ 2.5 |
| Auto-Gating | Present (high-speed) |
| Tube Weight | ~80 g |
| System Weight | ~550 g |
| Power | 1× CR123A / AA or external power port |
| Waterproof Rating | IP67 |
| IPD Adjustment | 40 / 50 mm interpupillary distance |
| Tube Lifetime | over 10,000 hours |
Comment / Quality Level
The L3Harris 18UM / 18UA series represents the baseline tier of Unfilmed Gen 3 White Phosphor, combining classic Gen 3 architecture with film-free technology.
These tubes offer low noise, moderate FOM, and strong detail performance in low-light conditions.
The Series 18 is a proven solution for volunteer, security, and training-focused projects where reliability and stable operation are essential without paying premium contract-grade prices.
Suitable For
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Volunteer kits and humanitarian missions requiring proven Gen 3 technology.
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Search-and-rescue teams operating in typical night-time conditions.
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Security units and instructors who need a durable and affordable solution.
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Users transitioning from Gen 2+ to Gen 3 White, seeking improved image quality.
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Civil initiatives and training programs needing professional performance without contract-level cost.