LMIR LM640 35mm product image
Type: Monocular
Resolution: 640 x 512 pixels
Brand: LMIR

LMIR LM640 35mm

The LM640 35MM is a thermal monocular made by LMIR.

It comes equipped with a clear 35mm f/1 lens to capture thermal signatures. The FOV on this thermal monocular measures 18 x 15 degrees. It comes with a 4x digital zoom to get additional details.

Inside the housing of the LM640 35mm you'll find the (uncooled, 17µm) 640 by 512 pixel thermal sensor with a refresh rate of 30Hz. The NETD of this thermal monocular is <40mK and it's operating between the 8µm - 14µm infrared wavelengths.

The measurements of this thermal monocular are 191 x 70 x 73mm (l/w/h) and weighs 490g. This device is rated IP67. It's protected against dust, shocks, water (splashes) and submersion under water. It handles temperatures between -40°C and 60°C.

The LM640 35mm is built for surveillance, hunting trips, law enforcement (police, border patrol etc.) and SAR (Search and Rescue) operations.

More thermal cameras by LMIR (Browse all here):


    • 640 x 512 pixels VOx sensor
    • 35mm aspherical F1.0 lens
    • WiFi streaming
    • Video recording
    • Laser pointer
    • Stadiametric rangefinder
    • Waterproof
    • Extended battery life

LM640 35mm Specifications

Lens35 mm
Optical zoom1 x
Digital zoom4 x
FOV (h/v)18 ° / 15 °
Focus range> 2m to infinity
Thermal typeUncooled
Sensor resolution (h/v)640 pixels / 512 pixels
Pixel pitch17 µm
Sensitivity40 mK
Spectral range8 µm / 14 µm
Display resolution (h/v)1024 pixels / 768 pixels
Refresh rate30 Hz
Image polarityBlack hot, white hot, cold red, red hot
Output screen colorFull color
Startup time10 seconds
Package contentsInstruction manual, Lanyard, Carrying bag, Cleaning cloth, USB Charger, (Micro) USB Cable
Dimensions (l/w/h)191 mm / 70 mm / 73 mm
Weight490 g
Number of batteries1
Battery life5 hours
Law enforcement
Search & rescue
Fire fighting
Operating temperature-40 °C / 60 °C
Environmental ratingIP67


LM40 Brochure
5.43 mb
Manufactured by LMIR
LMIR is a producer of thermal imaging optics and has been established in 2008. LMIR is based in China (Asia).
Thermal Imaging cameras
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