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.
Devices with a similar PVS-31-style layout can perform very differently. Digital night vision uses an electronic sensor and display; analogue systems use image intensifier tubes; fusion systems combine image intensification with a thermal sensor.
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 | Lowest-cost dual-eye format and short-range use with digital characteristics |
| 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 | Higher tube class in an articulating BNVD housing |
| ARGUS BNVD 1431 NNVT7 | Analogue GEN2+ | White phosphor, FOM 2200, autogated | Highest current FOM class in the pure night vision binocular range |
| ELF-FB20 | Analogue and thermal fusion | 640 x 512 thermal core with optional NNVT5 or NNVT Gen 3 tubes | Users who need heat-signature detection and image-intensified detail |
First analogue binocular
Alexi31 and LAN31 provide dual-tube analogue night vision at the value end of the range. Choose between green and white phosphor, then compare the exact tube data.
View binocular night visionARGUS BNVD platform
The BNVD 1431 options add an articulating housing with NNVT6L, NNVT Gen 3 or NNVT7 tube configurations. Included accessories differ by listing.
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
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, objective and eyepiece optics, phosphor colour and tube class can be discussed before purchase. A custom build normally requires around two weeks before dispatch, subject to tube availability and the requested specification.
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