Light is actually an electromagnetic wave, light waves are only a small part of the entire electromagnetic spectrum, and the wavelength range of visible light is between 380-780nm. There is also invisible light. For example, ultraviolet and infrared. There are also electromagnetic waves, such as rays. Various waves, such as X-rays, account for the majority of electromagnetic waves.

The layout form of lighting, lighting layout is divided into three forms: basic lighting, accent lighting and decorative lighting.

Electrical lighting is an indispensable part of the building and an important part of the building installation project. The quality of lighting directly affects people's production, life, work and learning. The factors that measure the quality of lighting include illumination uniformity, illuminance rationality, glare, color rendering of the light source, and the stability of illumination. These are primarily secured by design. In the following, we will focus on the basics related to budgeting.

First, the basic knowledge of LED

Lighting design should not only be familiar with the light source and lighting fixtures, but also deeply consider the space to be illuminated, the nature of the lighting object (architectural design, architecture, as well as indoor and outdoor materials, colors, workmanship, etc.) and many factors of people's visual psychology and physiological characteristics.

New light source: LED lamp (light-emitting diode); EDL lamps (electrodeless lamps); EL lamps (electroluminescent lamps).