Proper illumination may lead a potential intruder to believe detection is inevitable. Make detection likely if entry is attempted. Prevent glare that may temporarily blind the guards. Types of Lighting 5-10. The type of lighting system used depends on the installation's overall security requirements.
Continuous lighting is the most common security-lighting system.
It consists of a series of fixed lights arranged to flood a given area continuously during darkness with overlapping cones of light. Two primary methods of using continuous lighting are glare projection and controlled lighting. The glare security-lighting method is used when the glare of lights directed across the surrounding territory will not be annoying nor interfere with adjacent operations. It is a strong deterrent to a potential intruder because it makes it difficult to see inside of the area. Guards are protected by being kept in comparative darkness and being able to observe intruders at a considerable distance beyond the perimeter.