Infrared radiation is invisible to human eyes. In order to detect its existence and measure its strength, we must first use infrared detector to convert it into a signal that is easy to measure.
Infrared detector is the core of thermal imaging system, and it is also the most active field of infrared technology development. The development level of infrared technology is usually marked by the development level of infrared detectors.
To get a deep understanding of infrared detectors, first we need to know its classification and development history.
There are various classification methods for the wide variety of infrared detectors, which cover as below:
| NO | Classification | Detector Type |
| 1 | Spectral Response | Short Wave Infrared |
| Mid Wave Infrared | ||
| Long Wave Infrared | ||
| 2 | Working Temperature | Uncooled (Room Temperature) |
| Cooled (Cryogenic Temperature) | ||
| 3 | Structure | Unite |
| Linear | ||
| Focal Plane Array | ||
| 4 | Material | HgCdTe |
| QWIP | ||
| InSb | ||
| 5 | Detection Mechanism | F2, F4… |
| 6 | Working Principle | Thermal Detector |
| Photon Detector | ||
| 7 | Pixel Size | 12μm, 15μm, 25μm… |
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Uncooled Infrared Detectors
Uncooled Thermal Modules
Cooled Infrared Detectors
Cooled Thermal Modules