In the world of modern LED lighting design, aesthetics and ambiance are essential. However, visual comfort—a critical element for occupant well-being and functional lighting—is often underestimated. The Unified Glare Rating (UGR) plays a key role in optimizing indoor lighting environments.
At 9010, a leading manufacturer of designer LED lighting solutions, we believe that high-quality lighting must be both visually appealing and functionally effective. Understanding and managing UGR is at the core of our lighting design philosophy.
In addition to UGR, compliance with European lighting standards also includes considerations such as CRI (Color Rendering Index) and luminance to ensure exceptional light quality and user comfort.
What is UGR (Unified Glare Rating)?
UGR (Unified Glare Rating) is a standardized measurement (EN 12464) used to assess the potential for direct glare from lighting fixtures in indoor environments. In simple terms, it tells you how likely it is that a light source will cause discomfort or visual disturbance.
Key factors affecting UGR:
Luminance of the light source: The brightness of the emitting surface
Background luminance: General brightness of the surroundings
Apparent size of the source: How large the light appears to the observer
Position relative to the viewer: Angle and location of the light in the field of vision
Number of light sources: More sources can increase potential glare
UGR values typically range between 10 and 30. The lower the value, the better the visual comfort. For example, a UGR <19 is ideal for offices and workplaces.
Why UGR matters in LED lighting design
1. Enhanced visual comfort & well-being
In offices, homes, schools, and healthcare settings, glare can lead to eye strain, headaches, and difficulty concentrating. A well-designed LED lighting system with low UGR promotes visual health and user satisfaction.
2. Increased productivity
Low-glare environments boost workplace efficiency. Employees can focus more easily when lighting does not interfere with their vision, leading to higher performance and fewer errors.
3. Improved safety
In hallways, staircases, and industrial areas, high glare levels can obscure vision and increase the risk of accidents. Managing UGR in these areas enhances safety and spatial awareness.
4. Seamless blend of design and functionality
For interior designers and architects, lighting must be both stylish and functional. By selecting low UGR lighting fixtures, you achieve aesthetic impact without compromising on performance or comfort.
Practical tips for managing UGR in LED lighting projects
To create effective and compliant lighting designs, consider the following strategies:
Define specific lighting requirements: every space has different needs. Work environments, for example, require low UGR and high CRI to support concentration and accurate color perception.
Follow industry standards: refer to EN 12464-1 for indoor lighting guidelines. It outlines recommended UGR values by application, along with CRI and luminance benchmarks..
Choose Certified Low-UGR Fixtures: opt for LED fixtures with clearly stated UGR ratings. These products are specifically engineered to minimize glare and maximize light quality.
Optimize fixture positioning: proper layout and light direction help maintain even illumination while minimizing potential glare sources.
Mind your surfaces: glossy or reflective surfaces increase indirect glare. Use matte or diffused materials for better light diffusion and reduced luminance contrast.
Use lighting simulation tools: lighting simulation software can help predict and visualize UGR levels before installation, ensuring optimal performance and compliance.
9010novantadieci: lighting solutions that prioritize comfort and design
At 9010novantadieci, our commitment to visual comfort is reflected in every product we design. All our LED lighting fixtures are developed with a strong focus on:
Low UGR values for visual well-being
High CRI for true color rendering
Balanced luminance for uniform light distribution
Our technical datasheets provide complete UGR and CRI details, making it easy for designers and architects to select the right product for each application.