Infrared
Illuminators
Infrared illuminators are used in areas
where the available lighting is not sufficient for clear
surveillance. They are generally used with black and white
cameras since these cameras have greater sensitivity to
infrared light. Color cameras that switch to black and white
at night are coupled with IR illuminators for night time
surveillance, making them suitable for both day and night
viewing. Infrared illuminators use light emitting
diodes, or LEDs, to transmit light. A single LED produces only
a small amount of light so several LEDs are used. LEDs can be
extremely economical as well as efficient. |