N-Vision Optics NOX18 product image

N-Vision Optics NOX18

The NOX18 is a thermal weapon sight made by N-Vision Optics and is part of the NOX series.


The NOX18 spots a crisp 18mm f/1 objective lens collecting thermal radiation. The default field of view on this thermal scope is 24.3 by 18.3 degrees. It has a 8 times digital zoom to enlarge (parts of) the image.

Behind the lens of the NOX18 you can find the (uncooled, 12 micrometer) 640 x 480 pixels core refreshing the image at 60Hz. It's operating within the 7.5µm to 13.5µm infrared spectrum.

The physical dimensions of this thermal scope read 127 x 74 x 76mm (lwh) and the scale reads 454 grams. This device is rated IP67. It handles dust, shocks and water (splashes).

The NOX18 can be used in scanning and surveillance, hunting adventures, police operations and tactical operations.



  • Can be utilized handheld, helmet or weapon mounted
  • 8 user-selectable reticles
  • Electronic windage and elevation adjustments
  • Focusable objective lens
  • Digital 2x, 4x, and 8x zoom
  • Dovetail (AN/PVS-15 style) head/helmet mounting interface
  • Nitrogen purged to prevent internal fogging


Lens18 mm
Diopter adjustment-6 +2
Digital zoom8 x
FOV (h/v)24.3 ° / 18.3 °
Focus rangeManual
Thermal typeUncooled
Sensor resolution (h/v)640 pixels / 480 pixels
Pixel pitch12 µm
Spectral range7.5 µm / 13.5 µm
Display resolution (h/v)640 pixels / 480 pixels
Refresh rate60 Hz
Image polarityBlack hot/white hot, black/white edge detect
Output screen colorMonochrome
Video formatsPAL, NTSC
Startup time4 seconds
Reticle details8 user-selectable reticles
Rail detailsStandard MIL-STD-1913 (Picatinny)
Dimensions (l/w/h)127 mm / 74 mm / 76 mm
Weight454 g
TypeCR123 or 18640
Number of batteries1
Battery life7 hours
Environmental ratingIP67
Law enforcement
Search & rescue
Fire fighting

DRI Ranges

DRI stands for Detection, Recognition and Identification and is based on the widely used Johnson's criteria.

  • Detection Detect if an object is present
  • Recognition See what type of object it is (i.e. person, vehicle, airplane)
  • Identification For example see if someone is a friend or foe
Detection Recognition Identification
Rabbit 270 meters 67 meters 33 meters
Person 950 meters 237 meters 118 meters
Vehicle 2300 meters 575 meters 287 meters

Please note that these values are calculated, always consult the manufacturer for official range numbers.


N-Vision Optics NOX18
N-Vision Optics NOX18
N-Vision Optics NOX18
N-Vision Optics NOX18


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