Types and characteristics of high pressure gas discharge lamps
1 The radiation spectrum is selective. By selecting an appropriate luminescent material, the radiation spectrum can be concentrated at the desired wavelength, or several luminescent materials can be used simultaneously to obtain the best combined spectrum.
2 with high efficiency, they can convert 25-30% of input energy into light output.
3 long life. Use up to length.
4 The light output maintains good characteristics and can provide 60-80% of initial light output at the end of life.
At present, there are high pressure sodium lamps, (fluorescent) high pressure mercury lamps, xenon lamps, metal halide lamps and the like.