When it comes to professional lighting for offices, commercial spaces and work environments, one of the most important (and often least understood) parameters is the UGR.

Understanding what UGR is and why it affects visual quality is essential to design comfortable, safe and regulatory-compliant environments.

What is the UGR (Unified Glare Rating)

UGR is the acronym for Unified Glare Rating, or an index that measures the level of glare perceived by a person within an artificially illuminated environment.

In simple terms, the UGR indicates how annoying a light source is to the human eye.

The lower the value, the lower the glare, the greater the visual comfort.

The UGR index takes into account several factors:

• position and intensity of the illuminating luminaires

• surface luminance

• direction of the gaze

• contrast between light and surrounding environment

Why UGR is important in work environments

High UGR lighting can cause:

• visual fatigue

• reduction in concentration

• annoyance or stress during prolonged activities

• worsening of labour performance

For this reason, the lighting regulations indicate maximum UGR values based on the intended use of the environments.

In offices, open space, classrooms, commercial environments and professional, the recommended value is generally: UGR < 19

This limit ensures a comfortable light even during prolonged visual activities, such as computer work, reading or design.

How to reduce glare: the role of optics

To obtain a low UGR value it is not enough to reduce the light power: it is essential to control the way in which the light is emitted.

The most effective solutions include:

• dedicated optics

• technical speakers

• systems with backward optics

• shields designed for professional use

The LEDCO approach to low UGR lighting

At LEDCO we design lighting systems designed for visual comfort and professional design, integrating solutions with:

• UGR < 19 for work environments

• backward optics to reduce glare

• uniform and controlled light

• integration into modular and linear systems

The goal is to offer reliable tools to architects, lighting designers and professionals, capable of combining aesthetics, functionality and visual well-being.

Designing better means illuminating better

Understanding what the UGR is means taking an extra step towards a conscious lighting design.

Well-thought-out lighting is not just a matter of lumen or design, but of quality of light and respect for the people who live the spaces every day.

Discover LEDCO solutions designed for professional and low-glare environments on www.ledcoitalia.it