Shop for NVG goggles for five minutes and you'll run into a wall of alphanumeric names — PS31, PVS7, NVG7, then a suffix like 2G, 3W, or 3HFW stacked on top. None of that is random. Every letter and number in an NVG model name tells you something about the tube generation, the phosphor color, or the housing design, and once you can read it, picking the right unit gets a lot faster. This guide breaks down what those designations actually mean and ranks the best NVG goggles once you know how to compare them apples to apples.
NVG naming conventions trace back to military nomenclature — PVS7, for example, descends from the U.S. military's AN/PVS-7 designation, while PS31 and NVG7 are ATN's own model lines. Once you can decode generation, phosphor, and FOV from the name, the ATN PS31-3HFW is the clear best overall pick for dual-tube, hands-free NVG.
Quick Answer: Best NVG Goggles
- Best overall: ATN PS31-3HFW — dual-tube BNVD, Gen 3 Auto-Gated, 51° FOV, FOM 2376+
- Best for the money: ATN PVS7-HPT — single-tube Gen 2+, military-pattern housing
- Best lightweight/single-tube pick: ATN NVG7-2G — 1.1 lbs, Gen 2+, hand-held or head-mounted
- Best dual-tube upgrade path: ATN PS31-2 — same BNVD body as the PS31-3HFW at Gen 2+ pricing
- Budget pick: ATN NVG7-2G, Gen 2+, Green Phosphor
Why the Latest Generation Stands Out
Across the PS31, PVS7, and NVG7 lines, the naming pattern is consistent once you know what to look for: the base model name identifies the housing and format, and the suffix identifies the tube generation and phosphor. A "-2" suffix means Gen 2+ tubes. A "-3" suffix means Gen 3, Auto-Gated tubes. A trailing "G" means P43 Green Phosphor; a trailing "W" means P45 White Phosphor. "HP" or "HFW" designations (like PS31-HPT or PS31-3HFW) mark the high-performance tube grade within that generation, with a published Figure of Merit — the PS31-3HFW carries FOM 2376+, the top tier in the PS31 line.
That naming logic matters because it lets you compare goggles across families without opening a spec sheet. See "PVS7-3" and "PS31-3W" side by side and you already know both run Gen 3 Auto-Gated tubes — the difference is the housing format, not the tube inside. Reading the name first, then verifying against the spec sheet, is the fastest way to shop this category.
Decoding the Names: PS31 vs. PVS7 vs. NVG7
| Family | Format | Generation options | FOV | Weight |
|---|---|---|---|---|
| PS31 | Dual-tube BNVD (binocular night vision device) | Gen 2+, Gen 2+ HP, Gen 3 Auto-Gated | 40° or 51° | 1.28 lbs |
| PVS7 | Single-tube, military-pattern goggle | Gen 2+, Gen 2+ HP, Gen 3 Auto-Gated | 40° | 1.5 lbs |
| NVG7 | Single-tube, lightweight multi-purpose goggle | Gen 2+ | 40° | 1.1 lbs |
Best Overall: ATN PS31-3HFW
What the Name Tells You
"PS31" identifies the dual-tube BNVD housing — the design built to replace the legacy PS-15, with independently pivoting tube housings for binocular or monocular use. "-3" means Gen 3, Auto-Gated tubes. "HFW" marks it as the highest-performance tube grade in the line, paired with P45 White Phosphor, at a published FOM of 2376+.
Image Quality and Range
At FOM 2376+, this is the sharpest tube ATN offers in the PS31 line, with a 51° field of view for wide situational awareness. It's a 1X system, built for movement and awareness rather than distant identification — pair it with the accessory 3x lens set if you need extended range.
Battery and Build
1.28 lbs, IP65 environmental rating, CR123 battery rated for 60 hours standard or 300 hours with the optional battery pack. The pivoting tube housings also let the goggle fold flat against a helmet when stowed, lowering its profile.
Buy this if: you want the clearest image and widest FOV available in ATN's dual-tube NVG line.
Skip it if: you don't need dual-eye depth perception — a single-tube PVS7 or NVG7 will save weight and cost.
Best for the Money: ATN PVS7-HPT
What the Name Tells You
"PVS7" traces its naming pattern to military nomenclature and identifies a single-tube goggle housing that can run handheld, head-mounted, or helmet-mounted. "HPT" marks the high-performance Gen 2+ tube grade, rated 57-60 lp/mm — a step up from the base PVS7 tube.
Image Quality and Range
At 57-60 lp/mm with P43 Green Phosphor, the PVS7-HPT delivers solid resolution for a single-tube system. Like the PS31 line, it's a 1X device, expandable to 3.0x or 5.0x magnification with compatible afocal lenses.
Battery and Build
The PVS7 housing is built around a full Mil-Spec body — 1.5 lbs, water resistant, and shipped with a head mount assembly, two AA batteries rated for roughly 50 hours, and a sacrificial filter to protect the tube from bright-light exposure.
Buy this if: you want a single-tube goggle with a higher-grade Gen 2+ tube at a lower cost than dual-tube Gen 3.
Skip it if: you need depth perception for moving through obstacles — that calls for a dual-tube PS31.
Best Lightweight/Single-Tube Pick: ATN NVG7-2G
What the Name Tells You
"NVG7" is its own housing line, distinct from the military-pattern PVS7 — built specifically as a lightweight, rugged, hands-free option. "-2G" means Gen 2+ tubes with P43 Green Phosphor.
Image Quality and Range
Resolution runs 50-57 lp/mm with a 40° FOV — enough to identify movement and terrain features at typical hands-free working distances. It's a 1x system with a built-in IR illuminator for total darkness.
Battery and Build
At 1.1 lbs, this is the lightest goggle in ATN's NVG lineup, running on a single CR123 battery for about 50 hours. It's rated water and fog resistant and can be run handheld, head-mounted, or helmet-mounted.
Buy this if: weight is your top priority and you don't need dual-tube depth perception.
Skip it if: you want Gen 3 tube performance — the NVG7 line is currently Gen 2+ only.
Best Dual-Tube Upgrade Path: ATN PS31-2
What the Name Tells You
Same PS31 BNVD housing as the featured PS31-3HFW, but the "-2" suffix means Gen 2+ tubes instead of Gen 3. Available in both 40° and 51° FOV, and in Green or White Phosphor.
Image Quality and Range
Resolution runs 58-60 lp/mm — a meaningful step below the Gen 3 FOM rating on the PS31-3HFW, but still enough for situational awareness and movement in most conditions.
Battery and Build
Identical body to every PS31 variant: 1.28 lbs, CR123 power, 60-hour standard runtime, IP65 rated. Because the housing is the same across the whole PS31 line, this is a legitimate upgrade path — buy the Gen 2+ body now and you already know the fit, weight, and mounting before ever touching a Gen 3 unit.
Buy this if: you want the dual-tube PS31 format without paying Gen 3 prices yet.
Skip it if: your budget already supports Gen 3 — go straight to the PS31-3HFW and skip the upgrade cycle.
Budget Pick: ATN NVG7-2G
The NVG7-2G is the lightest, most straightforward entry point into hands-free NVG in ATN's lineup — Gen 2+, Green Phosphor, single tube, 1.1 lbs. If you're trying to understand whether a hands-free NVG setup fits your workflow before committing to a dual-tube system, this is the low-risk way to find out.
Buy this if: you're testing whether hands-free NVG fits your needs before investing in a dual-tube system.
Skip it if: you already know you need depth perception or Gen 3 clarity — go straight to the PS31 line.
How to Choose
Once you can read the naming convention, choosing gets simpler. First, decide on single-tube versus dual-tube: single-tube units like the PVS7 and NVG7 are lighter and cheaper; dual-tube PS31 units add depth perception, which helps with moving through obstacles and rough terrain, at the cost of a bit more weight and money.
Next, match the generation suffix to your budget and conditions. "-2" (Gen 2+) covers most situational-awareness needs at a lower price. "-3" (Gen 3, Auto-Gated) costs more but holds detail better in mixed or rapidly changing light.
Then check the phosphor letter. "G" (Green, P43) is the traditional look and typically the lower-cost option. "W" (White, P45) renders in black-and-white and many operators find it easier on the eyes over long sessions.
Finally, look for "HP" or "HFW" in the name — that marks the higher-performance tube grade within a generation, usually paired with a published FOM or lp/mm rating above the base model. If two units share the same base name and generation suffix, the "HP" version is the sharper tube.
FAQ
What does the "PVS" in PVS7 stand for?
PVS-pattern naming originates from military night vision nomenclature. ATN's PVS7 line uses that established naming pattern to identify a single-tube, military-style goggle housing that can be run handheld, head-mounted, or helmet-mounted.
What's the difference between PS31 and PVS7 goggles?
PS31 is ATN's dual-tube BNVD housing with independently pivoting tubes, while PVS7 is a single-tube, military-pattern housing. PS31 adds depth perception from the second tube; PVS7 is lighter and typically less expensive.
What does the number after the dash mean in an NVG model name, like PS31-3?
The number after the dash identifies the tube generation. A "-2" suffix means Gen 2+ tubes; a "-3" suffix means Gen 3, Auto-Gated tubes, which generally deliver a higher Figure of Merit and better performance in changing light.
What do the "G" and "W" letters mean at the end of an NVG name?
They identify phosphor color. "G" means P43 Green Phosphor, the traditional night vision color. "W" means P45 White Phosphor, which renders the image in black-and-white and can reduce eye strain over long sessions.
What does "HFW" or "HPT" mean in a model name like PS31-3HFW?
"HP" or "HFW" designates the high-performance tube grade within that generation — a tube with a higher published resolution or Figure of Merit than the base model in the same line.
Is the NVG7 the same as a PVS7?
No. NVG7 is a separate ATN housing line from PVS7, though both are single-tube, hands-free goggles. NVG7 is lighter at 1.1 lbs versus 1.5 lbs for the PVS7, and currently ships in Gen 2+ configurations.
Do I need a dual-tube goggle, or is single-tube enough?
It depends on your task. Dual-tube units like the PS31 give you depth perception, which helps with navigating obstacles and uneven terrain. Single-tube units like the PVS7 or NVG7 are lighter and less expensive, and work well for straightforward observation tasks.
Ready to Choose Your NVG
Once you can read a model name at a glance, picking the right NVG goggle comes down to matching format, generation, and phosphor to your actual task. For dual-tube clarity with the highest tube grade ATN offers, the ATN PS31-3HFW is the top pick. Browse the complete lineup, including the PVS7 and NVG7 families, on the ATN night vision goggles page. If you're weighing FOV, phosphor, and generation for a head-mounted purchase, our guide to the best night vision goggles ranks models by those specs directly.
