What is the ultimate purpose of lighting design?

Statistics show that more than 80% of the information received by the normal person is received by the human visual organ. And a few people every day to stay in artificial light environment for a considerable amount of time, for the visual sensory information to create a comfortable environment is the basic requirements for lighting design. The lighting design goal is according to the different indoor environment need illumination, the correct choice of light source and lighting lamps, determine the reasonable form and layout, create a reasonable quality of light environment, to meet the requirements of the work, study and life.