Microbolometric

Microbolometric refers to a type of infrared detector that utilizes an array of micro-bolometers to sense thermal radiation. A micro-bolometer is a small, resistive element whose electrical resistance changes significantly with temperature. When infrared radiation strikes a micro-bolometer, it absorbs the energy and heats up. This temperature increase causes a change in its electrical resistance, which is then measured by readout electronics.

These detectors are uncooled, meaning they do not require cryogenic cooling to operate, making them more compact, less expensive, and less power-hungry than cooled infrared detectors. The microbolometric array is fabricated using semiconductor manufacturing techniques, allowing for high-density integration and miniaturization. The performance of a microbolometric detector is characterized by its sensitivity, response time, and noise equivalent temperature difference (NETD), which indicates the smallest temperature difference it can detect.

Microbolometric technology is widely used in various applications, including thermal imaging cameras for security and surveillance, industrial inspection, medical diagnostics, and automotive night vision systems. Its ability to detect heat signatures in the absence of visible light makes it invaluable for seeing in darkness, fog, or smoke. The continuous advancement in microbolometric materials and fabrication processes is leading to improved resolution, sensitivity, and cost-effectiveness, further expanding its application range.