自从1879年爱迪生发明了白炽灯,人们开始走出漫漫长夜。灯泡的诞生,开创了人类由使用火焰照明到电光源照明的新纪元。100多年来,电光源的发展经历了一段漫长而又辉煌的历程。作为人类第一代光源的白炽灯,一直延续到今天。白炽灯光效率较低,只有10%的电能转变为可见光,而剩余的90%变成热能白白地浪费掉。1939年,美国 GE 公司研制出低气压气体放电灯,后来在灯管上涂上了荧光粉,成为荧光灯,它的发光效率比白炽灯提高了5倍。到50～60年代,人们又相继研制出低压钠灯、荧光高压汞灯、大功率长弧氙灯等气体放电灯,这些电光源称之为第二代电光源。到本世纪70年代,由于受世界能源危机的冲击,开发高效节能电光源产 Ever since Edison invented the incandescent lamp in 1879, people began to walk out of the long night. The birth of the light bulb, creating a human from the use of flame lighting to lighting a new era of electric light. For more than 100 years, the development of electric light source has experienced a long and glorious course. As the first generation of human incandescent light source, has been extended to today. Incandescent light is less efficient, with only 10% of the electrical energy being converted into visible light, while the remaining 90% becomes heat wasted. In 1939, the United States GE company developed a low-pressure gas discharge lamp, and later painted in the tube phosphor, a fluorescent lamp, its luminous efficiency than incandescent lamps increased by 5 times. To 50-60 years, people have developed a low-pressure sodium lamp, fluorescent high-pressure mercury lamp, high power long arc xenon lamp and other gas discharge lamps, these electric light source called the second generation of electric light source. To the 70s of this century, due to the impact of the world’s energy crisis, the development of energy-efficient electric light source