Fortuna General 40L3 product image

Fortuna General 40L3

The GENERAL 40L3 is a thermal weapon sight made by Fortuna and is part of the General series.


The General 40L3 spots a crisp 25mm f/1 objective lens collecting thermal radiation. The default field of view on this thermal scope is 14.6 by 11.1 degrees. The eye relief distance is measured at 52mm.

Behind the lens of the General 40L3 you can find the (uncooled, 17 micrometer) 384 x 288 pixels core refreshing the image at 50Hz. The thermal contrast (NETD) of this thermal scope is <50mK and it's operating within the 7.4µm to 14µm infrared spectrum.

The physical dimensions of this thermal scope read 225 x 52 x 65mm (lwh) and the scale reads 620 grams. This device is rated IP67. It handles dust, shocks, water (splashes) and submersion under water. It's rated for operating in temperatures between -30°C and 50°C.

The General 40L3 can be used in hunting adventures, police operations and tactical operations.



  • Compact and lightweight
  • Aluminium rubberized body
  • Resistant to large caliber recoil
  • AMOLED display
  • IP67 rating
  • 4 user profiles
  • High-aperture lenses
  • Silent shutterless calibration
  • 3-button intuitive control
  • Video output


Lens25 mm
Diopter adjustment-5 +5
Eye relief distance52 mm
Optical zoom2.8 x
FOV (h/v)14.6 ° / 11.1 °
Focus range10m to infinity
Thermal typeUncooled
Sensor resolution (h/v)384 pixels / 288 pixels
Pixel pitch17 µm
Sensitivity50 mK
Spectral range7.4 µm / 14 µm
Display resolution (h/v)800 pixels / 600 pixels
Refresh rate50 Hz
Output screen colorFull color
Dimensions (l/w/h)225 mm / 52 mm / 65 mm
Weight620 g
Number of batteries2
Battery life5 hours
Operating temperature-30 °C / 50 °C
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 264 meters 66 meters 33 meters
Person 931 meters 232 meters 116 meters
Vehicle 2254 meters 563 meters 281 meters

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


Fortuna General
Fortuna General
Fortuna General
Fortuna General
Fortuna General
Fortuna General


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