1. Functionality: Lighting must serve a particular purpose, whether it is to light up an area, provide security, showcase an object, or create an atmosphere.
2. Aesthetics: Lighting design should enhance the aesthetic value of a space, create a mood, and contribute to the overall design scheme.
3. Ergonomics: Lighting should be designed to meet the needs of the user, including adequate task lighting for specific activities such as reading or working, and comfortable levels of ambient lighting.
4. Energy efficiency: Lighting design should incorporate energy-saving techniques, such as the use of daylight, use of efficient light sources, and lighting controls to minimize energy usage.
5. Sustainability: Lighting design should consider the environmental impact of lighting systems, including reducing the use of hazardous materials and recycling materials where possible.
6. Safety: Lighting design should provide adequate illumination to ensure the safety of occupants, including lighting stairs, exits, and outdoor areas.
7. Flexibility: Lighting design should provide flexibility to accommodate changes in the use of the space over time.
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