Engine of a motorcycle, picture taken with a MWIR camera (XMID 320; 3 to 5 um).
SWIR cameras can also be used for thermal imaging, if the temperature range is above approximately 250°C (Planck's law). Especially for thermal imaging of hot metal objects, the SWIR range is advantageous over MWIR or LWIR, because of the larger and more constant emissivity values in this wavelength range. For example, XenICs SWIR InGaAs cameras are used to inspect the blades of turbines for electric power generation. Another advantage of the use of SWIR cameras for thermal imaging, is the ability to image hot objects through glass (monitoring of the inside of industrial furnaces).
Image of a hot soldering iron (380°C), taken with a SWIR camera (XEVA 1.7 640; 900 to 1700 nm) .
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