What security lighting is known to have a blue hue?

Mercury Vapor Lamps are known for emitting a distinctive blue hue, which makes them identifiable among other types of lighting. This blue tint results from the specific spectral output of the mercury vapor, which produces light that is rich in the blue and green spectrum. This characteristic makes them suitable for various outdoor and industrial applications, including security lighting, as the blue light can enhance visibility and create a stark contrast in environments that may otherwise be poorly lit.

While other lighting options have their own advantages, such as energy efficiency in LEDs or the warm light from high-pressure sodium lights, they do not produce the same kind of blue hue that is characteristic of mercury vapor lamps. This makes Mercury Vapor Lamps uniquely recognized for their specific color temperature and usage in enhancing security visibility.