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Theon NYX / Photonis ECHO is a high-quality European-manufactured night-vision system that combines the Theon Sensors NYX housing with Photonis ECHO image-intensifier tubes of the 4G Hybrid generation (Gen 2+/Gen 3-level performance).
ECHO tubes are distinguished by a clean image field, high detail clarity, and stable operation in variable lighting conditions thanks to fast auto-gating and a low noise level.
P43 green phosphor provides a classic contrast profile and optimal visual efficiency for orientation, target recognition, and observation under starlight conditions.
⚙️ Technical Specifications
| Parameter | Value |
|---|---|
| Housing | Theon Sensors NYX (Dual-Tube NVG System) |
| IIT Type | Photonis ECHO |
| Tube Format | 18 mm (optional 16 mm) |
| Phosphor | P43 (green), optional P45 (white) |
| Figure of Merit (FOM) | ≈ 1800–2200 |
| Signal-to-Noise Ratio (SNR) | ≥ 23 |
| Resolution (RES) | ≥ 57 lp/mm |
| High-Light Resolution (200 lx) | ~50 lp/mm |
| Auto-Gating | Fast-Autogated PSU |
| EBI (Equivalent Background Illumination) | Low (≤ 1.5) |
| Halo | ≤ 1.0 |
| Housing Power Supply | 1× AA or CR123A / external power input |
| Housing Water Protection | IP67 |
| Mounting Interface | Wilcox / Rhino / Dovetail |
| Tube Service Life | ~10,000 hours |
| Tube Weight | ≈ 70–75 g (18 mm version) |
Comment / Quality Level
The system demonstrates high effectiveness in dynamic environments such as urban areas, industrial zones, and open terrain.
Fast Auto-Gating technology enables rapid adaptation to sudden lighting changes without loss of clarity or image blooming.
With SNR ≥ 23 and resolution above 57 lp/mm, the image remains clean and natural even without IR illumination.