In the past, light fitting were carefully designed to reduce discomfort, look attractive and provide the best possible lighting for maximum performance and productivity.
Unfortunately, due to a low level of consumer knowledge and an assumption that LED lights are the next great thing, suppliers take advantage and supply low cost, ineffective lighting, even at high costs
1. Office and school fittings used to be designed with deep recesses and reflectors to distribute the light whilst minimising direct light and discomfort. These reflectors have been completely discarded and even worse LED lighting which on its own can be harmful to the eye, are used with often no diffusers and/or very wide beam angles, In a room with multiple lights such as open plan offices or schools, the effect of this glare is multiplied.
UGR (Unified Glare Rating) values are supplied on fittings which take this into consideration. The lower the UGR value, the better it is.
2. LED’s do not all have full spectrum light. In fact they often have very high Blue light which is most harmful. Together with very low red and other colours they create a light that is sensitive to the eye and results in a more 2 dimensional monotone effect. This actually decreases the effectiveness and increases discomfort.
3. FREQUENCY is unacceptable and unnecessary. Any frequency of a light can clash with the frequency of other devices and screens and create frequency waves and a motion sickness effect which causes further discomfort and a reduction in concentration and performance.
4. Finally, the amount of lights is essential. Watts are not a true indication as it was in the past. There are numerous LED options and the output Lumens is the deciding factor. Some LED’s have far higher Lumens/Watt than others. Generally the higher Lumens/Watt, the more efficient the light will be but the entire fitting needs to be considered as the diffuser or lens can reduce the output Lumens by as much as 30%. Most suppliers quote the LED specs and not the resultant output.
Below are 2 options to compare with any quotes or options which you may receive. Live comparisons are also possible where supplied lights are tested to ensure that they meet suppliers specifications using a professional lighting analyser.