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NVGA-15 / L3Harris 20UM (20UA) is a modern night-vision system that combines the ergonomic NVGA-15 housing with proven L3Harris 20-series Unfilmed White Phosphor image-intensifier tubes.
This configuration is designed for users seeking an optimal balance of image quality, stability, and overall cost.
The L3Harris 20UM / 20UA tubes represent an evolutionary upgrade over the baseline 18UM series, offering noticeably improved sensitivity, a cleaner background, and reduced noise (lower EBI).
Thanks to Unfilmed White Phosphor technology, the user receives a natural, high-contrast image without a green color tint, reducing eye fatigue during prolonged operation.
⚙️ Technical Specifications
| Parameter | Value |
|---|---|
| Housing | NVGA-15 (PVS-14 Dual-style modular binocular) |
| IIT Type | L3Harris 20UM / 20UA (Gen 3 Unfilmed White Phosphor) |
| Tube Format | MX-10160 / MX-11769 |
| Phosphor | P45 (white) |
| Figure of Merit (FOM) | ≈ 2000 (minimum) |
| Signal-to-Noise Ratio (SNR) | ≥ 28 |
| Resolution (RES) | ≥ 64 lp/mm |
| Halo | ≤ 1.0 |
| EBI (Equivalent Background Illumination) | ≤ 2.0 |
| Auto-Gating | Yes |
| Housing Power Supply | 1× CR123A or external power input |
| Housing Water Protection | IP66 |
| Mounting Interface | Dovetail / J-Arm / Helmet mount |
| Tube Service Life | ~10,000 hours |
| System Weight | ≈ 480 g |
Comment / Quality Level
The L3Harris 20UM / 20UA series represents an enhanced mid-range Gen 3 class that approaches OMNI-grade performance.
With improved SNR, these tubes deliver a clean, sharp image with low noise, while the reduced halo provides greater comfort when operating near light sources.
Integrated into the NVGA-15 housing, the user receives an ergonomic and well-balanced system suitable for extended field or operational use.
Suitable For
• Field operators and patrol units that require stable Gen 3 performance at a balanced price point.
• Reconnaissance teams and UAV crews working in low-to-medium-light environments.
• Training and operational users transitioning from entry-level Gen 3 to higher-stability Unfilmed performance.
• Civilian professionals and volunteer supply programs seeking dependable White-Phosphor imaging without moving to premium OMNI-class tiers.