Innovative Synergy of Micro Prismatic and Diffuser Films for UGR<19
Achieving UGR<19 Lighting with Micro Prismatic Sheets and Diffuser Films
Creating visually comfortable indoor environments requires lighting systems that minimize glare while maintaining high efficiency. One of the most effective approaches is the combination of micro prismatic sheets and optical diffuser films, commonly used in LED luminaires designed to achieve a Unified Glare Rating (UGR) below 19, the recommended limit for office and indoor lighting according to EN12464 lighting standards.
Our micro prismatic sheet is engineered to precisely control, redirect, and diffuse light, optimizing beam angles to reduce glare and enhance overall visual comfort. The prismatic pattern effectively shapes the light output, but depending on the luminaire’s position or viewing angle, additional optical components may be required to reach true UGR<19 compliance.
To further reduce glare and improve uniformity, we pair the prismatic sheet with a high-performance diffuser film. This diffuser film works by scattering and softening light, minimizing hotspots, smoothing beam transitions, and producing a uniform, opal-like glow. The result is a balanced blend of light control, efficiency, and comfort, ideal for professional environments such as offices, schools, hospitals, and architectural spaces.
Recommended Optical Components
1. Best Diffuser Films for UGR<19 Lighting
- Opto90 PET225 – High optical diffusion with excellent light transmission, ideal for linear LED luminaires and panel lights.
- Opto80 PC200 – Slightly lower transmittance for enhanced glare control in compact or high-output luminaires.
- Alternative options include Plexi90 Frost and Plexi90 Silk, diffuser sheets that deliver smooth light diffusion and an opal aesthetic finish.


2. Best Micro Prismatic Sheets for Glare Control
- Plexi Honeycomb – Advanced hexagonal microstructure offering superior beam management and visual comfort.
- Plexi Hexagon – Designed for linear lighting applications requiring precise glare control and high optical clarity.
