Definition of thermal imaging

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Photonics Dictionary

thermal imaging: Thermal imaging is a technology that detects infrared radiation (heat) emitted by objects and converts it into an image, known as a thermogram, which displays temperature variations in different colors. Unlike visible light imaging, thermal imaging does not require any ambient light and can be used in complete darkness or through obstructions such as smoke, fog, and certain materials.

Thermal cameras use sensors to detect infrared radiation and generate images based on the temperature differences between objects. Hotter objects emit more infrared radiation than cooler ones, which the camera captures and translates into a visual image.

Applications:

Surveillance and security: Used in law enforcement and military operations for night vision and identifying suspects or intruders in low visibility conditions.

Medical diagnostics: Helps in identifying abnormal temperature patterns in the human body, such as inflammation, tumors, or circulatory issues.

Industrial inspections: Detects heat leaks, electrical faults, and equipment overheating to prevent failures and improve maintenance.

Firefighting: Allows firefighters to see through smoke and locate hotspots or trapped individuals during rescue operations.

Building inspections: Identifies heat loss, moisture intrusion, and insulation problems in buildings.

Thermal imaging is a powerful tool that enhances visibility beyond the capabilities of the human eye by detecting heat signatures. Its wide range of applications across different fields makes it an invaluable technology for safety, diagnostics, and maintenance.