Low-pressure sodium lamp (LPS), an electricity source of using the low-pressure sodium vapor (work vapor pressure no more than a few pa), to discharge and generate the visible light. Since the invention in 1930. The Low Pressure Sodium lamp has consistently maintained its enviable position as the most efficient light source available. Germany lighting experts OSRAM is an important member of the Siemens Group, which is one of the two largest manufacturers of the electric light. LPS are famous for the most efficient light sources. For example, the 36W LPS system designed and collocated by our company, used in 8m-height road lamp system, the exposure on the ground is 24.5 Lux, however, the 85W energy-saving light at the same height, only has 4.4 Lux. The life span of low-pressure sodium lamp depends on the number of ignition process, typically 18,000 hours. Light decline is smaller than other sources, can be reached 80-85% Luminous fiux at the end of the life. At present, our company has developed the LSP system with the characteristics of high light efficient, low temperature increase, lightweight, small self-consumption and large power factor and other characteristics. Compared with the common light source, it can save the electricity above 70%. It is especially suitable for the solar road light, tunnel lighting and highland cold special environmental situation etc. Solar energy low-pressure sodium lamp system is the best choice of solar lighting field. 12 pieces/carton.
