This article is not original, it is a translation. The original link can be found here [1]. Recently, I happened to be quite interested in lighting. When I was researching, I saw this article and thought it was pretty good. By the way, I will translate it.

People often say that lighting is both an art and a project, but in summary, the art of design is composed of a series of guiding principles. By understanding these principles, electrical distributors have demonstrated their professional knowledge and made themselves unique. In this way, they can start with customer needs (application scenarios) and end with customer satisfaction (equipment sales) when communicating with the owner.

What can lighting do
Light is something that should be purchased at the lowest possible cost, but it is also a commercial asset that should be carefully considered for investment to ensure the correct design and product are applied.

The vast majority of our impressions of the world come from our eyes, and light is essential for vision. Therefore, light is the medium through which most people perceive the world.

Lighting refers to the application of light in space. The position, relative intensity, and direction of light not only have a significant impact on vision and visual comfort, but also on human perception ability. In addition to light, lighting equipment itself can also affect the experience of the space and its owners.

Lighting can affect satisfaction, visibility, work performance, safety, security, sales, emotions and atmosphere, aesthetic judgment, and social interaction. It can also tell a story about space, letting customers know whether a store is focused on discounts, high-end products, or whether a restaurant sells fast food or a culinary experience.

Color perception: For an object that needs to perceive a certain color, its color generally needs to be reflected in both the object and the amount of light shining on it. Designers are particularly concerned about the appearance of colors (usually measured by the relevant color temperature (CCT)) and color fidelity, or the color rendering performance presented in comparison with standard light sources (usually using sunlight as the standard light source) (measured by the Color Rendering Index (CRI), the higher the CRI, the better the color rendering performance of the light source, and the stronger its ability to restore colors to objects.) The lighting industry is also evaluating an indicator that captures saturation. Overall, changing CCT CRI and saturation have a significant impact on the appearance of people, objects, and space, enhancing, weakening, and even changing their original colors.

Focus: The human eye will naturally be attracted to the brightest area in the field of vision. By focusing higher intensity light on certain features in space, we can make them focal points, redirect people's attention towards them, and establish visual hierarchy. For example, we can promote the display of key products by focusing on higher intensity light.

Spatial perception: Different light patterns in space can stimulate different psychological responses (as shown in the table below). For example, bright and uniform lighting, casting light on walls or even ceilings, can make the space in the lobby appear more public and visually larger. By contrast, using low intensity lighting and a small amount of peripheral light can create a sense of intimacy in a good restaurant.