High-intensity lighting offers better efficiency and longer life than other lighting systems. Originally intended for outdoor and industrial applications, the use of these lamps has spread to office and retail applications. Mercury vapor lamps, metal halide lamps, and high-pressure sodium lamps all fall in the high intensity category. Major applications include high-bay lighting for industrial environments, outdoor floodlighting, and roadway lighting, and track lighting for offices and retail environments etc.
Mercury vapor lamps are ideal for applications in industrial activities, and other outdoor lighting. They are available in wide range of watt design, and offer low initial cost, long life, and color stability. The metal halide lamps are very high efficacy and high quality lights, largely used for highway lighting, road lighting etc. High-pressure sodium lamps are coated to reduce glare and to widen light distribution, ideal for security, roadways, parking lots etc.