InfiRay Eye II E3 Plus V2 product image

InfiRay Eye II E3 Plus V2

The EYE II E3 PLUS V2 is a thermal monocular made by InfiRay and is part of the Eye II V2 series.


The Eye II E3 Plus V2 spots a crisp 25mm objective lens collecting thermal radiation. The default field of view on this thermal monocular is 10.5 by 7.9 degrees. It has a 4 times digital zoom to enlarge (parts of) the image.

Behind the lens of the Eye II E3 Plus V2 you can find the (uncooled, 12 micrometer) 384 x 288 pixels core refreshing the image at 50Hz. The thermal contrast (NETD) of this thermal monocular is <40mK.

The physical dimensions of this thermal monocular read 181 x 65 x 64mm (lwh) and the scale reads 420 grams. This device is rated IP66. It handles dust, shocks and water (splashes). It's rated for operating in temperatures between -10°C and 50°C.

The Eye II E3 Plus V2 can be used in scanning and surveillance and hunting adventures.



  • 12µm Thermal Sensor
  • 50Hz Refreshrate
  • Onboard Video Recording
  • Stadiametric Rangefinder
  • Hot Target Tracking
  • Laser Target Pointer
  • Picture in Picture (PiP)


Lens25 mm
Optical zoom2.5 x
Digital zoom4 x
FOV (h/v)10.5 ° / 7.9 °
Thermal typeUncooled
Sensor resolution (h/v)384 pixels / 288 pixels
Pixel pitch12 µm
Sensitivity40 mK
Display resolution (h/v)1280 pixels / 960 pixels
Refresh rate50 Hz
Image polarityWhite hot, black hot, red hot, color, hot target highlight
Output screen colorFull color
Dimensions (l/w/h)181 mm / 65 mm / 64 mm
Weight420 g
Number of batteries1
Battery life7 hours
Law enforcement
Search & rescue
Fire fighting
Operating temperature-10 °C / 50 °C
Environmental ratingIP66

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 375 meters 93 meters 46 meters
Person 1319 meters 329 meters 164 meters
Vehicle 3194 meters 798 meters 399 meters

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


InfiRay Eye II V2 E3 Plus
InfiRay Eye II V2 E3 Plus
InfiRay Eye II V2 E3 Plus
InfiRay Eye II V2 E3 Plus

More in Eye II V2 series