Armasight Helios 640 HD 4-32x100 (60 Hz) product image

Armasight Helios 640 HD 4-32x100 (60 Hz)

The HELIOS 640 HD 4-32X100 (60 HZ) is a thermal bi-ocular made by Armasight and is part of the Helios HD series.


The Helios 640 HD 4-32x100 (60 Hz) comes with a clear 100mm f/1 lens to capture thermal signatures. The FOV on this thermal bi-ocular measures 6.2 x 5 degrees. It comes with a 8x digital zoom to get additional details. It has an eye relief distance of 16mm and the exit pupil diameter is 14mm.

Inside the housing of the Helios 640 HD 4-32x100 (60 Hz) you'll find the (uncooled, 17µm) 640 by 512 pixel thermal sensor with a refresh rate of 60Hz.

The measurements of this thermal bi-ocular are 290 x 116 x 116mm (l/w/h) and weighs 1300g. It's protected against dust, shocks, water (splashes) and submersion under water. It handles temperatures between -40°C and 50°C.

The Helios 640 HD 4-32x100 (60 Hz) is built for surveillance, law enforcement (police, border patrol etc.), SAR (Search and Rescue) operations and the military.


  • 75mm Objective Germanium Lens Options
  • Easy and intuitive Drop-down user interface
  • Digital E-Zoom: 1x, 2x, 4x and 8x
  • 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
Lens100 mm
Diopter adjustment-5 +5
Eye relief distance16 mm
Exit pupil diameter14 mm
Digital zoom8 x
FOV (h/v)6.2 ° / 5.0 °
Focus range5m to infinity
Thermal typeUncooled
Sensor resolution (h/v)640 pixels / 512 pixels
Pixel pitch17 µm
Display resolution (h/v)800 pixels / 600 pixels
Refresh rate60 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)290 mm / 116 mm / 116 mm
Weight1300 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


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)
Armasight Helios Series (75mm lens HD)


Part of Helios HD series