Unified glare rating(UGR) is used to measure and evaluate the direct glare of the entire luminaire in a given environment . Ranging from 5-50, the lower the number, the lower the glare. Led lights with high glare will affect the vision of seeing objects, lead to visual discomfort and even make people can't distinguish the task objects at all.
According to the European Standard EN 12464, there are different UGR regulations regarding different indoor lighting applications. The UGR index is described in 13,16,19,22,25,28. Some UGR reference values relating to corresponding applications are listed as follows.
UGR < 13 – the glare is so discreet and unnoticed
UGR ≤ 16 Technical drawing, Precision work e.g. decorative grinding, hand painting; Colour inspection
UGR ≤ 19 Reading, writing, training, conferences, computer-based work, Laboratories ,Watch making (automatic)
UGR ≤ 22 Craft and light industries, Leather dyeing (machine), Control platforms; control panels.
UGR ≤ 25 Heavy industry, Automatic fabric printing, Saw frame, Work at joiner's bench, gluing, assembly
UGR ≤ 28 Railway platforms, foyers
EN 12464 states the maximum UGR in offices is UGR19 that is an important factor to ensure low glare and visual comfort. Kinglumi takes anti-glare light fixture a step further by announcing the launch of new generation APOLLO solid LED panel light with UGR <16(126LM/W), outperforming the regulation of EN12464-1:2011 standards. Not only is it outweighing most of LED panel lights in the market that's usually provided with UGR19(<100lm/W) or UGR24(>100lm/W) but also users in a new era of providing extremely uniform and glare-free office lighting
It's noted that glare can be caused by reflection of low-angle output from the task so reflection cup of light fixtures must be designed appropriately to serve anti-glare purpose. By utilizing reflection cup with a shielding angle of more than 20 degrees, Kinglumi APOLLO lighting is able to achieve a better control of glare by reducing the outer wide spill light.
Lighting plays an important role creating a good and pleasing working environment in offices. It's of no doubt to say that glare-free and uniform lighting lamp can contribute to eye protection, physical relaxation and positive feelings for people in workplaces. With UGR below 16, Kinglumi APOLLO panel led light will give people excellent, glare-free and pleasant illumination throughout the work spaces.
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