Lighting is an important part of modern society. With the development of science and technology, lighting has become the essential part of people's lives. Modern lighting plays an important role in residential lighting, commercial lighting, industrial lighting and outdoor lighting, etc. In terms of residential lighting, lighting should be comfortable, non-glaring and energy efficient. For instance, LED lighting is now commonly used in the home, its low energy consumption, long service life and soft light can create a comfortable living atmosphere. In commercial lighting, the brightness needs to be adjustable with environment changes, while industrial lighting often use lights with high luminosity. In outdoor lighting, the lighting needs to be waterproof and shockproof to reduce maintenance costs. Lighting is critical to people's life. With modern technology, the lighting industry is constantly evolving; more energy-saving, environmental friendly and cost-effective lighting solutions are constantly needed to meet the rapidly changing needs of the market.