InfiRay Tube TH35 product image

InfiRay Tube TH35

The TUBE TH35 is a thermal weapon sight made by InfiRay and is part of the Tube series.


The TH35 features a crisp 35mm objective lens focusing the available thermal radiation. The field of view on this thermal weapon sight is 8.8 degrees. It features a 3 times digital zoom to enlarge your subject. The eye relief distance is measured at 50mm.

Behind the lens of the TH35 you can find the (uncooled, 12 micrometer) 464 x 464 pixels thermal core refreshing the image at 50Hz. The thermal contrast (NETD) of this thermal weapon sight is <40mK.

The physical dimensions of this thermal weapon sight read 375 x 85 x 75mm (lwh) weighing in at 850 grams. It handles dust, shocks and water (splashes).

The TH35 is built to be used in hunting adventures.



  • Over 11 hours battery life
  • Custom Squared (464 * 464 pixels) sensor
  • Round OLED screen
  • 1000G shock resistance
  • 32 Gb Storage


Lens35 mm
Eye relief distance50 mm
Optical zoom3 x
Digital zoom3 x
FOV (h/v)8.8 ° / 8.8 °
Thermal typeUncooled
Sensor resolution (h/v)464 pixels / 464 pixels
Pixel pitch12 µm
Sensitivity40 mK
Display resolution (h/v)1024 pixels / 1024 pixels
Refresh rate50 Hz
Image polarityWhite hot, black hot, red hot, color, hot target highlight
Output screen colorFull color
Rail detailsMounts on standard 30 mm scope rings
Dimensions (l/w/h)375 mm / 85 mm / 75 mm
Weight850 g
Number of batteries1
Battery life11 hours
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 525 meters 131 meters 65 meters
Person 1847 meters 461 meters 230 meters
Vehicle 4472 meters 1118 meters 559 meters

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


InfiRay Tube TH35
InfiRay Tube TH35
InfiRay Tube TH35
InfiRay Tube TH35
InfiRay Tube TH35
InfiRay Tube TH35
InfiRay Tube TH35

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