La iluminación infrarroja adaptativa en aplicaciones de videovigilancia

Uri Guterman, Director of Product and Marketing at Hanwha Techwin Europe, offers a brief description of the improvement that infrared lighting offers to the effectiveness of a video surveillance system.

Video surveillance cameras need light to capture high-quality images. 24 hours of the day. In the past this meant that additional lighting had to be installed to ensure equipment could operate effectively in low light conditions and at night.. The cost of doing so would be prohibitive if it were necessary to carry out civil works for the wiring..

Light pollution could also be a problem for local authorities due to complaints related to the impact on residential areas.. As often happens, technology came to the rescue in the form of infrared lighting (AND).

Unlike our eyes, that can only detect white light between 400 y 700 nanometers (approximately.) wavelength, IR light 850 nanometers can help cameras capture high-quality monochrome images in what to humans is total darkness.

The first generations of IR illuminators were incandescent IR lights, which were expensive and consumed a lot of energy, in addition to having a very limited useful life. Más recientemente, The cameras have been equipped with infrared LED illuminators that are much more efficient and reliable from an energy point of view..

With infrared light emitted invisible to the human eye, These allow control room operators to send security guards to the scene or report suspicious activity to the police, without intruders realizing they have been detected.

Adaptive infrared illumination

The great advance in terms of lighting, which allows cameras to capture clear and sharp images at night, comes from the development of adaptive infrared illumination. This, as its name suggests, calibrates the angle of the camera's IR LEDs to match the zoom level and, de esta forma, Infrared illumination can focus on objects up to a distance of 200 metros.

Cameras with adaptive IR illumination introduced by manufacturers such as Hanwha Techwin, They use three sets of IR Leds that are calibrated to ensure that nearby objects, located at medium distance or far away, such as people and vehicle license plates, are sufficiently illuminated.

Al hacerlo, They offer a highly effective, energy efficient and eco-friendly way to ensure that video surveillance cameras can operate to the maximum of their capabilities., regardless of lighting conditions.

Uri Guterman

Product and Marketing Director of Hanwha Techwin Europe