What is UGR?
UGR stands for "Unified Glare Rating" and is a measure used to assess the glare experienced by people looking at a lit environment, such as an office, classroom, or public space. It is especially relevant when designing lighting systems to provide comfortable and visually pleasant light.
UGR takes into account various factors, such as the position and brightness of light sources, light reflection on surfaces, and the observer's viewing direction. The result is a numerical value indicating how disturbing the glare can be.
What UGR values are there?
UGR values range from 10 to 30, where a lower value indicates less glare and a higher value indicates more glare. A UGR value of 19 or lower is considered comfortable for most indoor environments, while values above 22 can be experienced as glaring.
Below are the different UGR values and their meanings
UGR < 16
A UGR value lower than 16 is considered excellent and offers very high visual comfort. In environments where precision and concentrated work are required, such as offices, laboratories, or reading rooms, it is ideal to have lighting with a UGR value below 16.
UGR 16-19
A UGR value between 16 and 19 is considered good and offers high visual comfort. This lighting level is suitable for general workplaces, meeting rooms, and classrooms where visual comfort is important but precision requirements are less strict.
UGR 19-22
A UGR value between 19 and 22 is considered acceptable and offers reasonable visual comfort. This lighting level is suitable for spaces such as corridors, stairwells, or storage rooms, where visual demands are lower and glare is less critical.
UGR > 22
A UGR value higher than 22 is considered unacceptable because it leads to significant glare and visual discomfort. It is important to avoid lighting with a UGR value higher than 22, especially in work environments where prolonged visual concentration is required.
Microprismatic panel for LED panels for low UGR
A microprismatic panel is an innovative technology specifically designed to reduce the Unified Glare Rating (UGR) of LED panels, thus providing increased visual comfort. This panel consists of small prismatic structures that evenly distribute light and minimize unwanted glare.
How does a microprismatic panel work?
The microprismatic structure of the panel acts as an optical system that effectively controls and diffuses the light from the LEDs. The light emitted by the LEDs is refracted and scattered in various directions by the prismatic structures. This creates a homogeneous and diffuse lighting pattern without disturbing glare.
Advantages of a microprismatic panel
- Reduces UGR value: The microprismatic panel effectively reduces the UGR value of LED panels. This means visual comfort is increased by minimizing glare and eye fatigue, which is essential in work environments requiring prolonged visual concentration.
- Even light distribution: By using the microprismatic panel, light is evenly distributed over the surface of the LED panel. This results in uniform and consistent lighting without dark or bright spots, creating a pleasant and comfortable work environment.
- Maintains light quality: Unlike some other methods to reduce glare, the microprismatic panel maintains the high light quality of the LED lighting. It provides bright and natural light rendering without compromising the color rendering index (CRI) and overall light performance.
