Sunday 6 October 2013

Workings Of The Security Cameras



Security and safety become important especially in no light conditions or at night time. The infrared security cameras not just see in the dark but work regardless of the light conditions, even in zero light, thereby making the visibility very clear. Here we would see how the camera works.
Infrared light is invisible to human eyes, has a longer wavelength and lower frequency than visible light. Since everything on the earth emits some form of infrared light, it picks up what amount of heat a person or object has.
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The infrared LED lights, in order to capture information, are placed around the outside of the camera lens. The infrared can measure the heat coming from the objects in an area in every environmental conditions and even in no light. The infrared light can even travel through some materials including fog, smoke and dust.
The infrared security cameras are also known as night vision cameras. But, it should not be confused with day/night cameras. The difference between day/night and night vision cameras is that the former is a good choice for areas with a constant source of light, as they don’t work properly without that source. They use a very sensitive imaging chip which allows the camera to capture an image even in low light. However, it doe not use infrared technology.
Infrared cameras will give you a colored image when the light is available. With increasing darkness, it automatically switches to infrared mode, and records black and white images.
An infrared camera can be measured through the camera’s lux. It refers to the amount of light which is required to get a good quality picture. The amount of light required is directly proportional to the lux, that means a camera will need less light with lower lux. For a true infrared camera, the value of lux should be 0.0 which means that it can see in complete darkness as well.
The infrared cameras can also be compared based on the distance to which they can see in the dark. Some cameras can even range up to 150 feet in complete darkness. You can select the range of camera depending upon much property you want to protect. These cameras can be used for inside, as well as for outside.
ACS ALARMS & CCTV provides you with infrared security products which help you to protect your property in every weather condition.

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