The most striking feature of the DTG-18N is the presence of four separate image intensifier tubes with four separate objective lenses arrayed in a panoramic orientation. The center two lenses point forward like traditional dual-tube goggles, giving the operator more depth perception, while two more tubes point slightly outward from the center to increase peripheral view. The two tubes on the right and the two on the left are spliced at the eyepieces. The operator sees the two center tubes somewhat overlapping the two outer tubes to produce an unprecedented 120° FOV. This is an absolute game-changer for the SOF community. The two right and two left tubes are housed in merged assemblies and are hung from a bridge, giving operators interpupillary adjustment options. They can also be easily removed and operated as independent handheld viewers. The IPD of the two system can be adjusted on the helmet mount.
Model |
DTG-18N |
Structural mode |
helmeted turnover four-eyed NVG |
Battery type |
Lithium battery (cr123Ax1) / cr123Ax4 external battery pack |
Power supply |
2.6-4.2V |
Installation |
Head mounted(standard American helmet interface) |
Control mode |
ON/IR/AUTO |
Over power consumption |
<0.2W |
Battery capacity |
800-3200maH |
Battery life |
30-80H |
Magnification |
1X |
FOV(°) |
120×50 +/-2 Horizontal 120+/-2 ° Vertical 50 +/-2 ° |
Parallelism of optical axis |
<0.1° |
IIT |
gen2+ / gen 3 |
GAIn |
Auto |
Lens system |
F1.18 22.5mm |
MTF |
120LP/mm |
Optical distortion |
3% Max |
Relative Illumination |
>75% |
Coating |
Multilayer broadband coating |
Focus range |
250mm-∞ |
Focus mode |
Manual focus facility |
eye relief |
30mm |
Pupil diameter |
8mm |
Visibility range |
-1(+0.5~-2.5) |
IPD adjust type |
Arbitrary continuously adjustable |
IPD adjust range |
50-85mm |
IPD lock type |
Manual lock |
IR |
850nm 20mW |
Working temperature range |
-40–+55℃ |
Humidity range |
5%-95% |
Waterproof |
IP65/IP67 |
Dimensions |
155x136x83mm |
Weight |
880G(without battery) |