High Pressure Sodium Lamps
High pressure sodium (HPS) lamps, a member of the high intensity discharge (HID) lamp family, are the most efficient white light source commercially available today. HPS lamps were developed and introduced in 1968 as energy-efficient sources for exterior, security, and industrial lighting applications, and are particularly prevalent in street lighting applications. Due to their high efficiency and long life, today’s HPS lamps are also suitable for many interior applications, particularly where color rendering is not a crucial concern. |
