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NVGA-15 / L3Harris 18UM (18UA) is a reliable binocular night-vision system that combines the compact, lightweight NVGA-15 housing with proven L3Harris 18-series Unfilmed White Phosphor image-intensifier tubes.
This configuration is designed for users who require a clean, stable Gen 3-level image without the excessive cost of contract-grade versions.
The L3Harris 18UM / 18UA tubes represent an entry point into the world of Gen 3 White Phosphor: they combine excellent photocathode sensitivity, low background noise, and a balanced brightness level, making them an ideal solution for civilian, volunteer, and training applications.
⚙️ Technical Specifications
| Parameter | Value |
|---|---|
| Housing | NVGA-15 (PVS-14 Dual-style modular binocular) |
| IIT Type | L3Harris 18UM / 18UA (Gen 3 Unfilmed White Phosphor) |
| Tube Format | MX-10160 / MX-11769 |
| Phosphor | P45 (white) |
| Figure of Merit (FOM) | ≈ 1800 (minimum) |
| Signal-to-Noise Ratio (SNR) | ≥ 24.1 |
| Resolution (RES) | ≥ 64 lp/mm |
| Halo | ≤ 1.0 |
| EBI (Equivalent Background Illumination) | ≤ 2.5 |
| Auto-Gating | Yes |
| Power Supply (housing) | 1× CR123A or external power port |
| Ingress Protection | IP66 |
| Mounting | Dovetail / J-Arm / Helmet mount |
| Tube Service Life | ~10,000 hours |
| System Weight | ≈ 480 g |
Comment / Quality Level
The L3Harris 18UM / 18UA series represents a baseline commercial-grade Gen 3 Unfilmed White Phosphor solution that delivers stable image quality, natural contrast, and minimal background noise.
These tubes feature balanced characteristics that make them an excellent choice for daily use, training activities, or volunteer missions.
In combination with the NVGA-15 housing, the system remains lightweight, ergonomic, and reliable, with the option to separate it into two monoculars if required.
Suitable For
• Volunteers and support-unit operators who require proven Gen 3 performance.
• Civilian users transitioning from Gen 2+ to more advanced technology.
• Instructors and training centers developing foundational night-operation skills.
• Observation teams and UAV operators working in standard lighting conditions.
• Users who value a balanced price-to-reliability ratio without moving to L3Harris contract-grade series.