Lighting has a great influence on human life, and it is an integral part of our lives. With the development of technology, lighting has not only provided people with illumination, but has also created a pleasant and comfortable environment for them. Due to the particularity of different occasions, an appropriate lighting environment is necessary. Different lighting shapes provide different functions. For example, a light with big angles and smooth lines can create a sense of spaciousness and will make people feel relaxed, while one with rigid lines and spotlights can make the space appear smaller and cozier. With technology development, nowadays, more and more compact and energy-saving lightings have appeared. Moreover, through linking up with the intelligent systems, the lighting system could have rich functions such as adjusting brightness according to the actual needs, changing colors and creating special effects, etc. Furthermore, lighting now can also be used in various occasions to create atmosphere. Churches use candles to make the space solemn, while parties are often accompanied with colorful lights to create a cheerful atmosphere. In short, lighting is an important factor to determine the atmosphere of a certain space. Because of the different functions of lighting, it plays an indispensable role in architecture, interiors, and in our daily life.