New LED Paneloffers a practical step against glare

The wellbeing of employees is an issue of growing importance in the design of new builds or when refurbishing existing workspaces. An increasing focus on high performance and productivity drives a need to monitor all aspects that contribute to the good health and happiness of an organisation’s workforce, and among these factors, the instance of glare from lighting schemes has become a key concern. However, confusion exists on how to implement low glare lighting and daylighting on a practical basis.

remains that the selection of a low glare unit is only the first step toward achieving a desired result. Integral LED has tackled the knowledge gap with the launch of its ‘Advance UGR<19’ Panel range. In announcing its new product, the UK lighting manufacturer explains how UGR (Unified Glare Rating) should be correctly applied to create visual comfort, and the ways its new panel can be used successfully to create a harmonious lighting environment for office workers.


any are now turning to low UGR luminaires to deliver a comfortable lighting scheme, but the fact

Let’s be clear on UGR The key metric provides a useful indicative rating for glare, based on a prescribed set of circumstances in a room. Sources of glare within a typical field of vision occurring in a lit environment can be numerous, including daylight from windows as well as artificial light- sources. The UGR value is calculated using a complex equation that includes the luminance value of the luminaire, the value of background luminance, the solid angle of the luminaire as seen by the viewer and several other values. Many products that claim to have a low UGR omit the fact the lighting product alone is not the only determinant of a low glare interior.

References made to UGR are held within lighting application guides such as Light Guide 7, published by The Chartered Institution of Building Services Engineers (CIBSE), which recommends that office environments do not exceed a UGR of 19. Therefore, UGR remains a function of the installation environment and not the individual luminaire. To correctly assess the level of glare a comprehensive lighting design is advised. Integral has moved to emphasise the need for clear guidance for customers on the issue of glare. The company specifies the UGR value as UGR <19 at 4H/8H and reflectance at 70/50/20 on both visual axis*. However, the manufacturer

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