Microbolometer
![Figure 1. Cross-sectional view of a microbolometer](/Images/godic/202501/27/Microbolometer.svg4327.png")
![The FLIR Systems ThermoVision SENTRY Infrared Imaging System utilizes a 320×240 microbolometer array.](/Images/godic/202501/27/Sentry4327.jpg")
A microbolometer is a specific type of bolometer used as a detector in a thermal camera. Infrared radiation with wavelengths between 7.5-14 μm strikes the detector material, heating it, and thus changing its electrical resistance. This resistance change is measured and processed into temperatures which can be used to create an image. Unlike other types of infrared detecting equipment, microbolometers do not require cooling.