How Do Infrared Illuminators Work?
Infared illuminators are used to improve the performance of night time surveillance systems, as they can see in the situations of complete dark. They work on the principle of THERMAL IMAGING, that is they identify the object by the heat which is emitted by it. This is the basic principle behind the working of an infrared illuminator. That is why it is able to see the images or videos even in the complete dark without the need of any additional illumination.
An IR-illuminator is a device that emits infrared light-low frequency electromagnetic radiation that’s outside the visible spectrum. In other words, it gives off light that a camera can pick up and use, but that a person can’t see-so while it’s still dark to the human eye, the camera can see just fine.