Scandium sodium lamp, can be used to bring light to thousands of homes.This is a kind of metal halide lighting: in the light bulb into iodide and sodium iodide scandium, add scandium and sodium foil at the same time, when the high pressure discharge, scandium ion and sodium ion respectively their characteristics of the emission wavelength of light, sodium line 589.0 and 589.6 nm two famous yellow light, and scandium line series of nearly 361.3 ~ 424.7 nm ultraviolet and blue light emission, because each other complementary color, the overall color is white light.It is because of the characteristics of high luminous efficiency, good light color, energy saving, long service life and strong ability to break fog that scandium sodium lamp can be widely used for TV camera and square, stadium, road lighting, known as the third generation light source.