What is the effective range of infrared surveillance cameras?
Now that the effective range of infrared camera monitoring is how much, bad conclusion, the general infrared camera 3.6-6 mm camera is generally within 40 meters, belonging to the indoor machine and the door is dedicated to wide-angle lens.
Infrared probe about 3 meters to 12 meters between ~ ~ some special except to see the main object of the strong degree of reflex is not strong.
6 mm more than a narrow angle lens, the general effective distance is about 100 meters. And some 25 mm is about 150 meters, if the high-speed laser PTZ machine can reach 300 meters of infrared distance, but this cost is very high, about 13,000 or so, commonly used lens general angle is as follows: 2.8mm 101 ° 3.6 Mm 83 ° 4mm 76 ° 6mm 53 ° 8mm 35 ° 12mm 28 ° 16mm 21 ° 25mm 13 ° 1 / 3CCD and 1/4 CCD angle difference around 20 ° Hope to help you.
