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Security lighting. In the field of physical security, security lighting is lighting that intended to deter or detect intrusions or other criminal activity occurring on a property or site. It can also be used to increase a feeling of safety. Lighting is integral to crime prevention through environmental design.
A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting applications. PIR sensors detect general movement, but do not give ...
Avoid too-bright security lighting that creates blinding glare and/or deep shadows, hindering the view for potential observers. Eyes adapt to night lighting and have trouble adjusting to severe lighting disparities. Using lower intensity lights often requires more fixtures. Use shielded or cut-off luminaires to control glare.
These lights are installed for safety, security, and for decoration. The decks and gangway of tugboat Samuel de Champlain illuminated at night while docked at a shipyard for the purposes of safety and security. Underwater accent lighting is also used for koi ponds, fountains, swimming pools and the like.
Modern prisons are among some of the most physically secure facilities, with almost every area under tight access control and surveillance.Pictured here is the exterior of Shata Prison in Israel, which is secured through the use of high fences, razor wire, protective barriers, guard towers, and security lighting.
A metal-halide lamp is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides [1][2] (compounds of metals with bromine or iodine). It is a type of high-intensity discharge (HID) gas discharge lamp. [1] Developed in the 1960s, they are similar to mercury vapor lamps, [1] but ...