Digital binocular
The listed DI-31AS uses a digital sensor and OLED display. Its housing and optical assembly can also support suitable analogue image intensifier configurations when agreed as a separate build.
View DI-31ASBinocular Night Vision Guide
Binocular night vision guide
Compare digital goggles, analogue image intensifier binoculars and thermal-fusion systems by the technology inside the housing.
Similar-looking housings do not establish the technology or controls inside. Digital night vision uses an electronic sensor and display; analogue systems use image intensifier tubes; fusion systems combine image intensification with a thermal sensor. Our workshop BNVD-1431 is a 1431-format device, not a PVS-31.
Check the product page for current price, availability and package contents. The comparison below is not an in-stock list.
Technology comparison
| Device | Technology | Confirmed specification | Best suited to |
|---|---|---|---|
| DI-31AS | Digital sensor and OLED display | 1024 x 768, 60 Hz, 16 ms, built-in 940 nm IR; housing and optics also support suitable analogue tube builds | A digital dual-eye format; it is not a dual image-intensifier system as listed |
| Kaelor Works BNVD-1431 | Analogue GEN2+ | Matched ATOM green phosphor, FOM 1400; Norinco optics, AA power, locking IPD stops; no manual gain | A workshop-built 1431-format option with automatic brightness control |
| TCX1 | Analogue GEN2+ | Matched ATOM white phosphor, FOM 1600; Norinco LW40 optics, manual gain, AA power, locking IPD stops | White phosphor and manual gain with compatible external Fischer power |
| BNV-MG | Analogue GEN2+ | Matched ATOM white phosphor, FOM 1600+ per tube; Norinco LW40, manual gain, CR2 3 V power, locking IPD stops | White phosphor, low/high IR and pod/helmet flip-up shut-off; no external battery port |
| Alexi31 | Analogue GEN2+ | NNVT4 green phosphor, FOM 1600 | Value-focused dual-tube analogue night vision |
| LAN31 | Analogue GEN2+ | JIMNVT white phosphor, FOM 1400, non-gated, no built-in IR | White phosphor in a familiar binocular layout |
| Hunter BNVD 1431 | Analogue GEN2+ | NNVT6L green phosphor, FOM 1500, 72 lp/mm, autogated | ARGUS BNVD format with green phosphor |
| ARGUS BNVD 1431 Gen 3 | Analogue Gen 3 | Green or white phosphor, FOM 1800, autogated and ABC | Gen 3 tubes and Norinco LW40 optics in a genuine ARGUS housing; green and white packages differ |
| ARGUS BNVD 1431 NNVT7 | Analogue GEN2+ | White phosphor, FOM 2200, autogated | A higher-FOM white phosphor configuration in a genuine ARGUS housing |
| ELF-FB20 | Analogue and thermal fusion | 640 x 512 thermal core; no-tube option, NNVT6L FOM 1600/1800, NNVT Gen 3 FOM 1800/2000 or NNVT7 FOM 2100 configurations | Users who need heat-signature detection and image-intensified detail |
Workshop BNVD-1431
A matched ATOM green phosphor pair, Norinco optics and AA power in our workshop bridge-and-pod build. Locking IPD stops preserve the set eye spacing. This configuration uses ABC rather than manual gain and is separate from our genuine ARGUS-housing listings.
View workshop BNVD-1431TCX1 white phosphor
Matched ATOM FOM 1600 white phosphor tubes with manual gain, built-in IR, status indicators, individual-pod shut-off and locking IPD stops. It uses an AA battery and supports a compatible Fischer-connected external pack and cable.
View TCX1BNV-MG white phosphor
Matched ATOM FOM 1600+ white phosphor tubes, manual gain, low/high IR, low-battery and IR indicators, locking IPD stops and individual-pod shut-off. Raising the whole unit on its helmet mount also switches it off; lowering restores operation. Power is one CR2 3 V battery, with no external battery port.
This is a Kaelor Works product, not an ACTinBlack DTNVS or DTNVS-MG; those products' specifications and warranties do not apply.
View BNV-MGARGUS BNVD platform
Hunter uses NNVT6L green tubes and ARGUS Ultra Light optics. The NNVT Gen 3 green and white versions use Norinco LW40 optics. The Gen 3 green package includes the device and tube sheet only; lens protectors are available on request. Do not assume the white version's accessories are included with the green version.
View ARGUS Gen 3 BNVDThermal fusion
The ELF-FB20 adds a 640 x 512 thermal channel to compatible analogue tubes. It can also be purchased as a housing-and-thermal-core configuration without tubes.
View ELF-FB20
Controls, fit and ATOM brightness adaptation
Manual gain and ABC are different. TCX1 and BNV-MG have working manual gain; our ATOM green BNVD-1431 does not. All three listed ATOM configurations use automatic brightness control. Startup or brightness adaptation after a sudden lighting change typically takes about 2-3 seconds to settle. TCX1 powers its tubes sequentially from its AA supply, so one side may light before the other; this does not establish that every ATOM-equipped housing uses the same power system.
IPD stops are not a power switch. They return the pods to the chosen eye spacing after folding. Pod shut-off and whole-device flip-up shut-off are separate functions. The workshop BNVD-1431 has selectable pod shut-off and past-vertical system shut-off; TCX1 lists pod shut-off; BNV-MG also supports whole-device helmet flip-up shut-off.
Compare weight on the same basis. TCX1 weighs approximately 547 g including image intensifier tubes and battery. BNV-MG is 539 g including its battery. Our BNVD-1431 is listed at 415 g, without a confirmed battery-inclusion basis. Compare the exact configuration and included accessories.
Compare the tube sheet, not only FOM
FOM is resolution multiplied by signal-to-noise ratio. SNR, gain, EBI, halo, visible spots and matching between the left and right tubes also affect binocular use. For a built-to-order system, the individual tube sheets supplied with the completed device are the final reference.
Custom binocular builds
Housing, optics, phosphor colour and tube class can be discussed before purchase. We confirm preparation time and component availability for the requested build. ELF-FB20 currently asks for approximately one week before dispatch; transit comes afterwards. An in-stock device follows its own listing and our shipping policy.
Need help choosing a binocular device?
Send your intended use, preferred phosphor colour and budget. We can compare the relevant technology, tube data and accessories before purchase.
Contact Kaelor Works