InfiRay Eye III E3 Max Thermal Monocular


The Eye III E3 Max comes with a quality 35mm lens to capture thermal signatures. The FOV on this thermal monocular reads 7.5 x 5.7 degrees. It comes with a 4x digital zoom to get additional details.

Inside the housing of the Eye III E3 Max you'll find the (uncooled, 12µm) 384 by 288px thermal imaging sensor with a refresh rate of 50Hz. The NETD (Noise Equivalent Temperature Difference) of this thermal monocular is <25mK.

The dimensions of this thermal monocular are 180 x 54 x 54mm (length/width/height) and weighs 480g. This device is rated IP67. It can withstand dust, shocks, water (splashes) and submersion under water. Operating temperatures range between -20°C and 50°C.

The Eye III E3 Max is suitable for surveillance missions, hunting and law enforcement.



Ergonomic Design and Lightweight

Improved Image Processing Algorithm

Starts/shuts down by opening/closing lens-cap

Scrollwheel Menu Navigation

Magnetic Charger

Record Videos to Build-In Storage

Digital Compass

WiFi Streaming



Thermal Sensor 384 x 288

Optical zoom 5 x

Digital zoom 4 x

Pixel pitch 12 µm

Sensitivity 25 mK

Run Time 8 Hours

Display resolution 1440 x 1080 pixels

Refresh rate 50 Hz

Dimensions 180 x 54 x 54 mm

Weight 480 g


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      525 meters        131 meters    65 meters    

Person    1847 meters    461 meters    230 meters


SKU Eye-III-E3-Max
Brand InfiRay
Shipping Weight 0.5000kg
Shipping Width 0.050m
Shipping Height 0.050m
Shipping Length 0.100m
Shipping Cubic 0.000250000m3
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