Infrared 24 LED Illuminator Board Plate for CCTV Security Camera FY-5024 PB

IR LED are suitable for the light sources of the rotary encorders to control various industrial equipment and for the light sources of various sensors. 

The modern CCTV system involves a linked system of cameras with full pan, tilt, and zoom able to be operated remotely from a control room.

These systems may involve sophisticated technology. Features can include night vision, computer assisted operation, and motion detection facilities which allows the operator to instruct the system to go on red alert when anything moves in view of the cameras. Camera systems increasingly employ bullet-proof casing, and automated self defense mechanisms which - as with the Liverpool system - ensure that cameras under attack are covered by neighboring cameras These can be legitimately described as military style systems.

The clarity of the pictures is often excellent, with many systems being able to recognize a cigarette packet at a hundred metres. The systems can often work in pitch blackness, bringing images up to daylight level.

Though both laser diodes and LEDs are light outputting devices by injecting current, the light quality is quite different. The light emitted from an LED is a random phase light which is the same as other normal light, but the one emitted from a laser diode is phase matched (also known as coherent light), which allows it to have many unique applications.