|
Quantity
|
Total
|
||
|
|
|||
|
|
|||
The combination of the ATN PVS-31 housing with L3Harris 18UM/18UA tubes offers a balance between the high image quality of modern Gen 3 unfilmed technology and overall affordability.
The 18UM / 18UA series represents L3Harris’ entry-level unfilmed line, yet it delivers stable performance, good detail rendition, and clean imagery in most night-time scenarios.
The PVS-31 housing adds extremely low weight, excellent ergonomics, independent monocular use, and compatibility with external power sources.
⚙️ Technical Specifications
| Parameter | Value |
|---|---|
| Housing | ATN PVS-31 |
| Tube Type | L3Harris 18UM / 18UA |
| Format | MX-10160 |
| Phosphor | White Phosphor |
| 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 |
| System Weight | ~450 g |
| Power | 1× CR123A or external power module |
| Tube Lifetime | ≈ 10,000 hours |
Comment / Quality Level
The 18UM/UA series is the entry-level tier of L3Harris unfilmed tubes, yet in real-world use it provides:
-
clean imagery without the characteristic “grain” seen in older filmed tubes;
-
strong performance in extremely low light;
-
stable image behavior under rapid brightness transitions;
-
controlled Halo, allowing effective work near artificial light sources.
Installed in the ATN PVS-31 housing, these tubes perform very efficiently, offering comfortable long-duration observation and reliable identification capabilities at medium and longer distances.