• The Power of
    Radiometric Micro
    Thermal Imaging
    The FLIR Lepton® is Leading
    the Micro-Thermal Revolution

Change the way you see the world!

The FLIR Lepton® is a radiometric-capable LWIR camera solution that is smaller than a dime, can fit inside a smartphone, and is ten times less expensive than a traditional IR camera. Using focal plane arrays of either 160 x 120 or 80 × 60 active pixels, Lepton easily integrates into native mobile-devices and other electronics as an IR sensor or thermal imager. The radiometric Lepton captures accurate, calibrated, non-contact temperature data in every pixel of each image for even greater utility in commercial applications. Non-radiometric versions are also available.

Why choose Lepton?

  • Enhanced IR Sensor
    Greater sensitivity than common thermopile arrays
  • Micro Thermal Imager
    Uncooled thermal imaging for small electronics
  • Ease of Integration
    Simplifies development and manufacturing of thermal-enabled devices

Watch the videoLepton Maker Site


See What Micro Thermal Imaging Can Do

Lepton is the technology behind some of FLIR's ground-breaking thermal imagers from the FLIR ONE thermal imaging accessory for smartphones and tablets to the MR176 Imaging Moisture Meter—and that’s only the beginning.

New devices equipped with thermal imaging have incredible potential in the areas of health, safety, temperature measurement, and presence detection. And due to high volume manufacturing techniques, FLIR can deliver Lepton at a price point that is an order of magnitude below other thermal camera cores.

Five Mighty Lepton Models

Lepton is available in five models:

  • 160 x 120 high resolution with 50° FOV and shutter
  • 80 x 60 resolution models with:
    • 50° FOV Radiometric with shutter
    • 50° FOV without shutter
    • 25° FOV without shutter
    • 50° FOV with a shutter for manual calibration


Overview Lepton 50°
Lepton 50°
Lepton 25°
Lepton 50°
Lepton 3
Sensor technology Uncooled VOx microbolometer
Scene Dynamic Range 0-120 °C Low Gain Mode: up to 450°C;
High Gain Mode: up to 150°C
Spectral range Longwave infrared, 8 μm to 14 μm
Array format 80 × 60, progressive scan 160 x 120, progressive scan
Pixel size 17 μm 12 μm
Effective frame rate 8.6 Hz (commercial application exportable) 8.8 Hz (commercial application exportable)
Thermal sensitivity <50 mK (0.050° C)
Temperature compensation Automatic. Output image independent of camera temperature.
Radiometric accuracy High gain: Greater of +/- 5°C or 5% (typical) Low gain: Greater of +/- 10°C or 10% (typical) N/A
Non-uniformity corrections Automatic with shutter Shutterless, automatic (with scene motion) Automatic with shutter
Image optimization Factory configured and fully automated
FOV - horizontal 51° 51° 25° 51° 56°
FOV - diagonal 63.5° 63.5° 31.3° 63.5° 71°
Output format User-selectable 14-bit, 8-bit (AGC applied), or 24-bit RGB (AGC and colorization applied)
Solar protection Integral
Input clock 25-MHz nominal, CMOS IO Voltage Levels
Video data interface Video over SPI
Control port CCI (I2C-like), CMOS IO Voltage Levels
Input supply voltage (nominal) 2.8 V, 1.2 V, 2.5 V to 3.1 V IO 2.8 V, 1.2 V, 2.8 V to 3.1 V IO
Power dissipation (Typical, room temp) 150 mW (operating), 650 mW (during shutter event), 4 mW (standby) 140 mW (operating), 650 mW (during shutter event), 4 mW (standby)
Package dimensions – socket version (w x l x h) 11.8 x 12.7 x 7.2 mm 8.5 × 8.5 × 5.6 mm (w × l × h) 10.5 x 11.7 x 6.4 mm 11.8 x 12.7 x 7.2 mm
Weight 0.9 grams 0.55 grams 0.55 grams 0.9 grams
Optimum temperature range -10°C to +80°C -10 °C to +65 °C
Non-operating temperature range -40 °C to +80 °C
Shock 1500 G @ 0.4 ms

Drag for 360° View


  • Safety & Security – See people lurking around in the dark at your home or business.
  • Automotive – Detect living beings in a car to prevent children or animals from being left in hot cars.
  • Micro and Nano UAV/UGV platforms  – Lepton® makes even smaller UAV/UAG platforms possible. 
  • Home Repair & Energy Efficiency – Find hidden air leaks, missing insulation, and water damage.
  • Building Automation & Presence Detection – Use Lepton® as a sensor to operate doors or activate HVAC systems automatically.

Where to Buy Lepton

Lepton is available through the distributors below:

Buy from Digi-KeyBuy from Avnet
Buy from Future Electronics

Learn More About Lepton

For more information on how Lepton® can change your products, just give us a little info and we’ll be in touch!