How is lighting calculation done?

Written by leditaly on 13/03/2025. Posted in Lighting.

The lighting calculation is a fundamental step in lighting design, as it allows you to determine the quantity and arrangement of light sources to ensure adequate lighting for environments. This process is essential for both residential and commercial and industrial spaces, contributing not only to aesthetics but also to functionality and energy efficiency.

Lighting calculation phases

To carry out an accurate lighting calculation, it is necessary to follow some fundamental steps:

1. Analysis of the environment

Before starting the lighting design, it is essential to analyze the characteristics of the environment, such as:

• Dimensions of the space (length, width, height)

• Colors and materials of the surfaces, which influence the light reflection

• Activities carried out within the area to be illuminated

• Presence of natural light

2. Definition of the necessary level of illumination

Each environment requires an adequate level of illumination, measured in lux. For example:

• Offices: approximately 500 lux

• Residential areas: 150-300 lux

• Warehouses: 100-200 lux

The reference standards, such as UNI EN 12464-1, provide precise indications on the recommended lighting levels for different applications.

3. Choice of light sources and optics

In this phase, the most suitable lamps and lighting fixtures are selected, considering:

• Type of source (LED, fluorescent, etc.)

• Color temperature and color rendering index (CRI)

• Light distribution and type of optics

LED light lines, for example, are a modern and effective solution for obtaining homogeneous and glare-free lighting.

4. Use of simulation software

There are professional software programs that allow you to simulate the lighting of an environment, such as Dialux and Relux. These tools help to:

• Evaluate the distribution of light

• Avoid shadows or over-lighting

• Optimize the arrangement of light sources

5. Checking the result and optimization

After having carried out the lighting calculation, it is essential to check the results and, if necessary, make changes to the arrangement or power of the light sources to improve efficiency and visual comfort.

Lighting calculation is a crucial process in lighting design and requires specific skills to achieve effective and comfortable lighting. The use of modern technologies, such as LED light lines, allows for improved aesthetics and energy savings, ensuring customized solutions for every need. Turning to industry professionals such as Led Italy is always the best choice for optimal lighting design.