Sodium Vapour Lamps

High Pressure Sodium Vapour Lamps with a polycrystalline translucent aluminum oxide discharge tube enclosed in an ovoid or tubular outer glass envelope. The avoid shell of the SON-LAMPS is internally coated with aluminum oxide powder. The discharge tube contains an amalgam of mercury and sodium along with xenon gas. The outer shell is evacuated and a better maintains this high degree of vacuum throughout the lamp life. These lamps need a control gear comprising of Ballast, Ignitor and capacitor for optimum performance. With a luminous efficacy up to 120 ImW, standard Son lamps are cost effective and best on high ways, industries and area lighting for extended periods of time. Tubular lamps are ideal for precise optical control.