What is microbolometer?

A microbolometer is a type of thermal sensor used in infrared cameras and thermal imaging devices. It is made up of an array of tiny thermal sensing elements that detect and measure the infrared radiation emitted by objects in their field of view.

These sensors work by using a material with high temperature sensitivity, such as vanadium oxide or amorphous silicon, which changes its electrical resistance in response to changes in temperature. When infrared radiation strikes a microbolometer, it causes the temperature of the sensing element to change, altering its resistance and producing an electrical signal that can be measured and interpreted as a thermal image.

Microbolometers are widely used in applications such as security and surveillance, firefighting, industrial inspections, and military operations. They are preferred for their small size, low cost, and ability to operate at room temperature without the need for cryogenic cooling.

The resolution and sensitivity of a microbolometer sensor can vary depending on factors such as pixel size, detector material, and readout electronics. Higher resolution sensors can provide more detailed thermal images, while higher sensitivity sensors can detect smaller temperature differences.