Lighting plays a very important role in our life, it can not only provide us illumination for our activities, but also creates different kinds of atmospheres. Lighting has been utilized by human being since ancient times when candles and oil lamps were introduced, through the long journey of technology development, now lighting has become more advanced than ever before, various of new lighting technologies such as LED, fluorescent and halogen are extensively used in different fields, both indoor and outdoor. In addition to lighting for illumination purpose, it can also be used as a decoration element as a part of interior designing. It can give the whole place a harmonious feeling, for example, front decoration lighting can be used to create a warm and romantic atmosphere in the restaurant. It can also increase the security level of an area, for example, various of street lights are put in a public place or certain buildings where security level needs to be high. Lighting not only gives us convenience and a sense of security, but also brings us a decent environment to hang out and engage in activities, making our daily life more colorful, without lighting, the progress of human being would be substantially different from what we are experiencing now.