Lighting is a measure that uses various light sources to illuminate work and living places or individual objects. The utilization of the light from the sun and the sky is called "natural lighting". The use of artificial light sources is called "artificial lighting". The primary purpose of lighting is to create good visibility and a comfortable and pleasant environment.

It can be seen that "lighting" is a measure, which includes "natural lighting" and "artificial lighting".

The lighting in interior design is a professional design that takes into account the illuminance, color temperature, and color rendering index of various architectural environments. It not only needs to meet the requirements of indoor "brightness", but also play a role in enhancing the environment and atmosphere. Generally, the requirements are put forward by the interior architect, and the electrical engineer conducts the calculation and adjustment. It also refers to the action illuminated by light or the state illuminated by a light.

In film shooting, the art of using natural light or artificial light. Involving the use of lighting equipment, light design, on-site arrangement, determination of light position, light ratio, tone and light and shadow effects, lens lighting treatment, etc., are indispensable means for photographers to create (see Film Modeling art, film Lighting).

Lighting design should be people-oriented, but safety and practicality must be considered first, as well as illuminance requirements, installation methods, and maintenance methods. Only then should humanized creativity be combined. A good lighting fixture design must have the above prerequisite conditions. Relevant explanations have been made in the lighting fixture entry. For lighting design, you can refer to the relevant literature of Jurassic Lighting.

Lighting is the use of artificial or natural light to provide people with sufficient illuminance (general lighting), or to offer good identification (road lighting, advertising signs, etc.), emphasize features (architectural lighting, key lighting, etc.), create a comfortable light environment (residential lighting, etc.), or create a special atmosphere (commercial stage lighting, etc.) And other means for special purposes (biochemical, medical, plant cultivation, etc.).