CCTV camera with IR illumination
CCTV system is very interesting and varied , there are many varieties of video surveillance systems , conventional cameras to the most powerful thermal imaging systems with HD resolution and a large radius of action.
What is the difference between infrared cameras and conventional CCTV cameras ?
Infrared cameras are different from conventional cameras the presence of special infrared LEDs operating in the infrared range of light frequencies . Camera with infrared illumination automatically turns it on when lighting conditions change within view of the camera with a special , built-in photocell . At the same time , it automatically switches to black and white mode . In low light , this mode increases the brightness , contrast and clarity .
As for street surveillance systems , the camera with infrared illumination ( thermal ), even when the fog provides a clear image .
Camera with IR illumination
When purchasing a surveillance camera with infrared illumination must pay attention to a number of things . First of all pay attention to the range of IR illumination . In some cases, expensive surveillance system with infrared illumination is effective at an average distance of 20-40 meters.
If you do not take this into account , the picture may be distorted by various factors such as glare, because the infrared beam has a feature reflected from surrounding surfaces ( walls, etc. ) . The particular model of camera you need to do in the event that you have decided on her appointment .
CCTV camera with infrared illumination is more expensive than a regular camera , but no IR image is quite bright , and without it is not entirely clear. In such cases it is necessary to install the camera in which the sensitivity to light . The most expensive and advanced video surveillance system today is the long-range imager .
You can equip existing surveillance camera infrared illumination , in this case there may be some compatibility problems with equipment , auxiliary power IR illumination , etc.
The main advantage of the cameras with infrared illumination is their shooting in the day – night mode . Day they shoot in color , and at night in black and white . When the camera goes into ” Night ” , the work enters a special filter through which it receives the maximum number of rays of light in the infrared illumination .