InfiRay Eye E3 Pro product image

InfiRay Eye E3 Pro

The EYE E3 PRO is a thermal monocular made by InfiRay and is part of the Eye V1 series.


The Eye E3 Pro packs a quality 35mm lens to capture thermal radiation. The field of view (FOV) on this thermal monocular reads 10.7 x 8 degrees. It's equipped with a 4x digital zoom to capture additional details.

Inside the housing of the Eye E3 Pro you'll find the (uncooled, 17µm) 384 by 288px sensor with a refresh rate of 50Hz. The NETD (Noise Equivalent Temperature Difference) of this thermal monocular is <40mK.

The dimensions of this thermal monocular are 185 x 62 x 62mm (length/width/height) and weighs in at 420g. This device is rated IP66. It can withstand dust, shocks and water (splashes).

The Eye E3 Pro can be used for surveillance missions and hunting.



  • Onboard recording
  • WiFi Streaming
  • 5 Color Palettes
  • High Frame Rate (50Hz)
  • Compact and Lightweight


Lens35 mm
Optical zoom1.6 x
Digital zoom4 x
FOV (h/v)10.7 ° / 8.0 °
Thermal typeUncooled
Sensor resolution (h/v)384 pixels / 288 pixels
Pixel pitch17 µm
Sensitivity40 mK
Display resolution (h/v)720 pixels / 540 pixels
Refresh rate50 Hz
Image polarityWhite Hot, Black Hot, Red Hot, Color, Target Highlight
Output screen colorFull color
Dimensions (l/w/h)185 mm / 62 mm / 62 mm
Weight420 g
TypeRechargeable Lithium Battery
Number of batteries1
Battery life7 hours
Law enforcement
Search & rescue
Fire fighting
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 370 meters 92 meters 46 meters
Person 1303 meters 325 meters 162 meters
Vehicle 3156 meters 789 meters 394 meters

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


InfiRay Eye V1 E3 Pro
InfiRay Eye V1 E3 Pro
InfiRay Eye V1 E3 Pro


More in Eye V1 series