Alpha Optics AO-PVS-7 Gen 2+ NV Biocular Goggles

Description

The Alpha Optics AO-PVS-7 is a high-quality mono tube, bi-ocular night vision goggle system providing hands-free operation at low light conditions. The Generation 2+ and/or 3 image intensifier tube features Automatic Brightness Control (ABC) which automatically adjusts the brightness of the image tube to achieve the highest quality image resolution under varying light conditions as well as a built-in infra-red illuminator which allows the user to operate under zero light conditions. The AO-PVS-7 is auto-gated to prevent image intensifier damage if exposed to intense light. They are waterproof and charged with nitrogen to prevent internal condensation while moving between extreme temperatures. Additional features include IR-On and Low-Battery Indicators. Image clarity is achieved by focusing the front objective while each eyepiece can be independently adjusted for eyesight correction.

The fully adjustable headgear provided allows the AO-PVS-7 to be flipped-up or quickly detached from the mask. An IR illuminator is integrated into the system for use in extreme low light conditions. Lightweight and versatile, the goggles can be hand-held, head-mounted, and helmet-mounted. Optional Long-Range objectives convert the AO-PVS-7 into a useful field binoculars.

Key Features:

- Lightweight

- Multifunctional

- Automatic high-light cut-off

- Low battery and IR on indicators

- Waterproof

Specifications:


Magnification	1x
Field of View	40°
IIT Generation	Gen 2+ and Gen 3
Diopter Adjustment	from -6 to +2
Focus Range	0.25 m to infinity
Lens System	26 mm; F/1.2
Interpupillary Adjustment	55 mm to 71 mm
Battery Type	Two 1.5 V AA batteries
Battery Life	Up to 50 hours
Operating Temperature	From -51°C to +49°C
Water Resistant	Submersible to 1 m depth for 30min
Laser Wave Length Laser Beam Divergence Laser Power Dimensions (L x W x H)	850 / 980 / 1065 nm 0.5° - 10° 50 mW 152 x 152 x 76 mm
Weight	550 g

Standard accessories: Lens tissue, Soft Case, Lens Cup, Batteries, Demist Shield, Sacrificial window, Soft Carrying Case, Hard Waterproof Case
Optional accessories: 3x, 5x, 6x, 8x Lenses, IR Spot/Flood Lens, Compass, Head Mount Assemblies, Helmet Mounts, OTIS Lens Swabs, Lens Cleaning Kit

Alpha Optics manufactures its own tubes which are comparable with high-specs in America market. The American FOM grading for the tubes is not normally used by tube manufacturers outside the USA. Since we offer non-American tubes only to our commercial customers, we also don’t use it.

So, the categories 2 and 3 are usually commercial grades with resolutions 57+ lp/mm and 51 lp/mm. Categories 0 and 1 are Milspec with resolutions 70+ and 64+.

Gen 2+, Echo, Echo 14, Echo 14 Plus, and 4G. These terms are mainly associated with Photonis (a major European IIT manufacturer).

1. Gen 2+ (second generation plus)

Technology: Microchannel plate IIT with improved photocathode sensitivity and resolution compared to Gen 2.
Typical specs:
- Resolution: ~55–64 lp/mm
- SNR (Signal-to-Noise Ratio): ~20–24
- Figure of Merit (FOM): ~1200–1600 (resolution × SNR)
Use case: Good general-purpose tubes with better performance than standard Gen 2, but not quite at modern military Gen 3 levels.
Common applications: Civilian night vision scopes, goggles, and binoculars.

2. Echo

Manufacturer series: Photonis Echo tubes are high-quality Gen 2+ tubes selected to meet minimum military-grade specs without being full mil-spec.
Typical specs:
- Resolution: ~57–64 lp/mm
- SNR: ~23+
- FOM: usually capped around 1600–1800
Positioning: Affordable alternative to Gen 3 tubes, very clean image with excellent low-light performance for the price.
Use case: Hunting, law enforcement, civilian NV setups needing strong performance without ITAR restrictions.

3. Echo 14

Not a tube type, but a device name — usually refers to ACTinBlack DTNVS housing or PVS-14 monoculars built with Photonis Echo tubes.
Specs depend on the Echo tube installed, usually same performance as above.
Single-tube monocular format (PVS-14 style) — lightweight, versatile, helmet-mountable or handheld.

4. Echo 14 Plus

Upgraded selection of Echo tubes — higher SNR and resolution within the Echo range.
Typical specs:
- SNR: ~24–28
- FOM: ~1800–2000+ (tighter spec tolerances)
Advantage: Cleaner image, less distortion, better performance in extreme low-light.
Still ITAR-free (unlike U.S. mil-spec Gen 3), but top-end for civilian Gen 2+.

5. 4G (Photonis 4G)

Premium mil-spec grade tubes designed to meet NATO/European military requirements.
Key features:
- Very high SNR (>28)
- FOM >2000 (no artificial cap)
- Extremely fast auto-gating and wide spectral sensitivity (including some near-IR range)
- Designed for multi-mission use: aviation, ground forces, special operations
Performance: Comparable or better than U.S. Gen 3 in many cases, especially for fast light changes and urban use.
Export control: Usually ITAR-like restrictions even though made in Europe — needs export authorization.

Summary Table

Type	Resolution (lp/mm)	SNR	FOM (approx)	Notes
Gen 2+	~55–64	20–24	1200–1600	Solid civilian NV
Echo	~57–64	23+	=1600–1800	Clean, affordable
Echo 14	Device using Echo tube	same as Echo	same as Echo	PVS-14 format
Echo 14 Plus	~57–64+	24–28	~1800–2000+	Premium civilian
4G	>64	28+	>2000	Full mil-spec performance

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