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December 28, 2016
What To Know When Buying And Using Thermal Cameras Thermal cameras are not like other types of cameras because here, the images are formed through infrared radiation. Also, this is referred to as Forward Looking Infrared or simply FLIR cameras that have a wavelength of around 14000nm. This is actually far beyond the wavelength of a typical camera which is at 450 to 750nm range and forming images by using visible light. Industrial security, high value site protection, perimeter security, border security, deployable security, force protection, asset surveillance, coastal surveillance, urban surveillance, port security as well as airport security are just some of the various applications in which thermal cameras are used. Every living thing emits some kind of thermal energy and this thermal energy is converted to visible images through thermal cameras. Later, these images are represented in forms of thermographs. In comparison to visible spectrum cameras, these thermal cameras are a lot more expensive. The reason for this is that, the device is converting thermal energy into visible images. In normal cameras, the pictures taken depend mostly on the light around. Therefore, we usually get better quality images if the photo is taken in a bright setting otherwise, the quality of photo is quite low.
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On the other hand, when a thermal cam is used, it functions very well in almost any type of lighting condition. There is added vision inside the infrared spectrum which expands the vision of whichever object is seen. Thermal temperature that a certain object emits will be seen by thermal cams. They are detecting and interpreting emissions and at the same time, providing users with good quality images even if there’s no or very low light.
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We usually come across on two kinds of thermal cameras. One version is the cryogenically cooled and the other version is un-cooled. When using un-cooled cameras, it can operate at room temperatures only and have infrared detector elements. Normally, these cameras have built-in batteries, make no noise and can be activated almost immediately. As for the cryogenically cooled cameras, these are often very expensive and may be damaged because of rough use. In reality, these cameras have some elements in containers, which may cool them to even below 0 degree Celsius or 32 degrees Fahrenheit. What’s more, they have outstanding resolutions while their sensitivities allow users to observe minute differences such as 0.1 C or 0.2 F even if these cameras are positioned at a distance that’s greater than 300 meter or 1000 feet from the object. Basically, when it comes to deciding which thermal camera to use, it all comes down to where it’ll be used.