Optimization of the lighting system at the Furong cave in Chongqing

Expectation and satisfaction of tourists for lighting system of the Furong cave has been investigated using a questionnaire survey and IPA (Importance Performance Analysis) method. It involves the power supply mode, light distribution system, lighting control, functional lighting system and landscape lighting system in the cave. Based on its results, the following optimizing strategies of the lighting system have been put forward, (1) Potential safety hazard of lighting design should be eliminated. The level of luminaire protection and lighting power supply should be enhanced. And the security of the lighting system should be guaranteed; (2) A prominent theme of the lighting system should be made; (3) LED should be used effectively for ecology purpose; (4) Different illumination levels should be applied to different landscapes. Patterns and colors of the lighting system should be diversified. Luminaire, wire and other lighting facilities should be hidden to improve the quality of the landscape.