THE FLAW WITH LEGACY POLE-MOUNTED SECURITY LIGHTING
Pole, street, and parking lot lights were never designed specifically for perimeter security lighting camera systems or on-site security personnel. Rather, these lighting products were merely adapted to meet the need for “security lighting.” Often times, legacy pole-mounted systems deliver way too much light, creating a slew of potential problems including shadows where intruders can hide, blinding glare that renders security personnel ineffective, and the surrounding unlit areas even darker. Thus, a need was identified for better-targeted perimeter lighting that integrated with human eye and today’s camera technology.
PERIMETER SECURITY LIGHTING IS VITAL
Perimeter security lighting is a vital part of an overall layered security plan. The benefits of lighting are many, but for security lighting, here is a list of a few key points that any security lighting system must deliver per the IESNA guideline:
THE HUMAN EYE & HOW IT REGISTERS LIGHT
The human eye is amazing. It has a natural mechanism that adjusts the iris of the eye to open and close automatically to maximize what the eye can see. When you walk outside during the day, the iris quickly adjusts and constricts to optimize your sight. If exposed to an excessive amount of light suddenly, the rods and cones of the eye go into protective mode and filter the light. You may recognize this as spots and mild disorientation until the eye can adjust. The opposite happens at night where there is little to no light. In this case, the iris naturally opens to its maximum level to allow the most light in, allowing you to see at night. The human eye does all this on its own without any control by the human.
Surprisingly, to navigate and survey your surroundings effectively at night, you don’t need as much light as you’d think. So, why spend more money investing on excess lumens, power, and infrastructure only to produce a light level that is ineffective in most security lighting applications? This is the common mistake most people fall victim to when considering security lighting.
More light is not necessarily better when it comes to night lighting. When illuminating for optimal security, it is important to understand how the human eye works and design around these parameters. The iris of the human eye—just like a camera aperture—widens or narrows depending on the amount of ambient light. In the daytime, the iris constricts to limit the amount of light into the eye adjusting for optimal vision. In the evening, the iris naturally widens to it’s maximum opening, allowing for the greater amounts of light allowed in, giving the optimal light to see at night. As a result, the security lighting goal now becomes twofold. The first objective is to create the perfect interaction with human eye for optimal performance; the second is to create the right light setting for CCTV camera operation.
With the advancement of LED technology and with the growth of newly developed lighting solutions, there has been a search for a better and more efficient form of lighting system. That new solution is LED lighting.LED lighting, which is a technology that besides being extremely bright
(it is 2 to 2.5 times brighter than traditional metal halides and HPS), provides energy-efficient solutions to help reduce overhead expenses by 60 to 70% – energy power costs.