Posts Tagged ‘
Lux’
Thursday, September 15th, 2011
Infrared CCTV cameras are becoming one of the most popular types of security/surveillance cameras for residences and commercial applications alike. Before purchasing an infrared CCTV camera it’s important that you are familiar with some of the terminology and functions associated with this specialized aspect of a CCTV security system.
Most Closed Circuit Television or CCTV cameras today are digital cameras. Basically, they take pictures or video much the same way as a personal digital camera or camcorder. These cameras operate by allowing light to penetrate through an iris or variable opening, a lens, and then strike a Charged Coupled Device or CCD or a Complementary Metal Oxide Semiconductor or CMOS.
Tags: ccd, Closed Circuit Television, cmos, ir radiation, Lux
Posted in
CCTV Articles, Security Camera|
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Wednesday, March 31st, 2010
Security cameras usually have a LUX rating. This LUX rating is the actual available light intensity at which the camera can produce a picture.
A LUX, abbreviated lx, is the International System of Units (SI) measure of the intensity of light. It can be thought of as the strength of light as determined by the human eye. A LUX is based on another unit of light measurement called a lumen, which is based on yet another unit called a candela. In the United States, the non-SI unit to measure light intensity is the footcandle. One foot candle is approximately equal to 10.8 LUX.
Tags: Lux, night vision, Security Cameras
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CCTV Articles|
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