Armasight Helios 336 HD 5-20x75 (30 Hz) product image

Armasight Helios 336 HD 5-20x75 (30 Hz)

The HELIOS 336 HD 5-20X75 (30 HZ) is a thermal bi-ocular made by Armasight and is part of the Helios HD series.


The Helios 336 HD 5-20x75 (30 Hz) spots a crisp 75mm f/1 objective lens collecting thermal radiation. The default field of view on this thermal bi-ocular is 4.3 by 3.2 degrees. It has a 4 times digital zoom to enlarge (parts of) the image. The eye relief distance is measured at 16mm and the exit pupil diameter measures 14mm.

Behind the lens of the Helios 336 HD 5-20x75 (30 Hz) you can find the (uncooled, 17 micrometer) 336 x 256 pixels core refreshing the image at 30Hz.

The physical dimensions of this thermal bi-ocular read 272 x 102 x 89mm (lwh) and the scale reads 1080 grams. It handles dust, shocks, water (splashes) and submersion under water. It's rated for operating in temperatures between -40°C and 50°C.

The Helios 336 HD 5-20x75 (30 Hz) can be used in scanning and surveillance, police operations, search and rescue and tactical operations.



  • 75mm Objective Germanium Lens Options
  • Easy and intuitive Drop-down user interface
  • Digital E-Zoom: 1x, 2x, and 4x
  • Color Modes: White Hot/ Black Hot/ Rainbow/ Various Color Modes
  • Extended Operation Time with Optional External Battery Power Supply
  • Recording: Video Output /Optional Video Recorder with onboard replay
  • Wireless remote control
  • CNC machined aircraft-aluminum alloy construction
  • Rapid start-up
  • Made in the USA


Lens75 mm
Diopter adjustment-5 +5
Eye relief distance16 mm
Exit pupil diameter14 mm
Digital zoom4 x
FOV (h/v)4.3 ° / 3.2 °
Focus range5m to infinity
Thermal typeUncooled
Sensor resolution (h/v)336 pixels / 256 pixels
Pixel pitch17 µm
Display resolution (h/v)800 pixels / 600 pixels
Refresh rate30 Hz
Image polarityWhite Hot, Black Hot, Fusion, Rainbow, Globow, Ironbow 1, Ironbow 2, Sepia, Color 1, Color 2, Ice-Fire, Rain, and OEM Custom
Output screen colorFull color
Startup time3 seconds
Package contentsVideo Cable, Battery Cassette, Packing Box, Soft carrying Case, Two Lithium Battery CR123A, Instruction Manual with Warranty Card, AWReC (Advanced Wireless Remote Control) #94, Picatinny adapter for AWReC (Advanced Wireless Remote Control)
Dimensions (l/w/h)272 mm / 102 mm / 89 mm
Weight1080 g
TypeCR123A 3V
Number of batteries2
Battery life4 hours
Operating temperature-40 °C / 50 °C
Storage temperature-50 °C / 70 °C
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 794 meters 198 meters 99 meters
Person 2794 meters 698 meters 349 meters
Vehicle 6764 meters 1691 meters 845 meters

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


Armasight Helios Series (75mm lens HD)
Armasight Helios Series (75mm lens HD)
Armasight Helios Series (75mm lens HD)
Armasight Helios Series (75mm lens HD)
Armasight Helios Series (75mm lens HD)


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