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Why CCTV lighting Choose IR Leds?

Grace www.mvteamcctv.com 2017-06-14 11:57:19
Firstly, let’s talk about the advantages of IR Leds.
1) Infrared Leds provide IR light which is invisible to the human eye but visible to the CCTV camera. It’s the best choice for both black & white and day/night cameras, because IR is invisible to the human eye it is ideal for covert surveillance. The camera can see, but the intruder cannot.

2) As their light can’t be seen, IR Leds are the perfect solution in sensitive areas where light pollution needs to be avoided, areas such as residential neighbourhoods and parks.

3) IR illumination also works well over long distances, with illumination at ranges up to 370m. Therefore in many applications IR illumination is the perfect lighting tool for CCTV, allowing cameras to capture crisp, clear images in black & white, and optimising camera performance.
Why CCTV lighting Choose IR Leds?
Secondly, let’s know about different wavelength of IR leds.
*715-730nm - overt IR, produces a red glow like a red traffic light.
*815-850nm - semi-covert IR with a faintly red glow only just visible.
*940-950nm - covert IR invisible to the human eye.
Why CCTV lighting Choose IR Leds?
Infra-Red light can be used to provide discrete or covert illumination for CCTV to minimise light pollution, or to provide very long distance illumination. IR can be used with monochrome and day/night cameras. As IR becomes more covert it becomes more difficult for the camera to see and consequently distances are reduced. 940-950nm IR should only be used with highly sensitive cameras fitted with high performance lenses. Focussing is also more difficult at those wavelengths as lenses start to operate more inefficiently with 940-950nm. As a 13 years CCTV camera factory, we mainly choose 850nm IR leds for ahd cameras and IP cameras.

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