What Is Thermal Imaging Technology?

Thermal imaging allows you to see the infrared spectrum.

Thermal imaging technology is used in infrared goggles and cameras. This technology, also known as night vision, is widely used by the military because the cameras can see light that is not visible to the human eye.

What It Is

Thermal imaging, more commonly known as infrared technology or night vision, allows the user to see an object based on the thermal (heat) energy that it emits. These cameras detect light in the infrared spectrum--light with wavelengths too small to be detected by the naked eye. Thermal imaging allows people to see objects in almost total darkness.

How It Works

Thermal cameras can detect temperatures between -4 F and 3,600 F. The camera scans an object and creates a detailed chart of its temperature pattern. The camera's processing unit translates the chart into a many-colored image of the object called a thermogram. The colors correspond to the varying temperatures of the object.

History

Cooled thermal imaging devices were first invented in the 1960s. Since then, inventors have created uncooled units that are more convenient for everyday use. In 1985, a battery-operated unit was developed, and an infrared driving camera was introduced in 2000.

References

• Moro Vision Night Vision: How Thermal Imaging Works