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💡 How Thermal Imaging Works
Thermal imaging, also known as infrared thermography, is a non-contact technology that converts the heat energy (infrared radiation) emitted by an object into a visible, color-coded image.
Every object with a temperature above absolute zero emits infrared energy, which is invisible to the human eye. Thermal imaging devices detect and translate the variations in this emitted heat into a visual representation, often called a thermogram or heat map.
Infrared Detection: The camera's specialized lens (often made of germanium) focuses the infrared energy onto a dedicated sensor chip called a Focal Plane Array (FPA).
Infrared Detection: The camera's specialized lens (often made of germanium) focuses the infrared energy onto a dedicated sensor chip called a Focal Plane Array (FPA).
Transduction: Each pixel on the FPA (often using materials like uncooled microbolometers for low-cost commercial cameras) reacts to the infrared energy focused on it, converting the thermal radiation into an electronic signal.