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21/09/2016, Corporate News | LED

LED lighting solutions have revolutionised the lighting industry thanks to the numerous advantages they offer compared to conventional light sources. They significantly cut energy and maintenance costs and enable towns and cities to reduce their environmental footprint. They improve visibility and colour contrast.

Recent reports however have stated that certain LEDs emitting a white light with a blue hue are harmful for people and wildlife. As safety and comfort have always been at the heart of our lighting solutions, we believe that well designed LED lighting solutions can offer all of the above advantages while creating environments where the safety and well-being of the people using them are paramount.

Advantages of LED luminaires
LED technology offers a unique opportunity to transform the way we light our towns and cities. Thanks to the efficiency and long life span of the LEDs, towns and cities can increase their lighting levels to create safer environments while saving money on energy and operating costs as well as reducing their carbon footprint.
LEDs also have the added advantage that they are dimmable and tolerate frequent switching which makes them ideal for working in conjunction with smart control systems to further reduce energy use during periods when the full light output is not required.
In addition, the broad-spectrum light produced by white LEDs improves visibility and colour contrast to reveal the true colours of an environment for improved driving conditions and a more pleasant landscape.

White light LEDs
White LEDs are available in different colour temperatures; cool, neutral and warm white and are measured in Kelvin. The colour temperature is a measure of the spectral content of light from a source; how much blue, green, yellow and red there is in it. The lower the Kelvin temperature, the warmer a white LED light source appears to the eye, providing a more yellow/gold light. A higher colour temperature means greater blue content, and the light appears whiter.

A recent report by the American Medical Association (AMA) stated that the blue light emissions from cool white LEDs could be harmful. They could cause eye fatigue and discomfort when viewed by the human eye as blue light scatters more within the human eye, leading to disability glare. They could also disrupt sleep cycles.
For the AMA, there is however no reason for towns and cities not to convert to LED technology. They recognise the obvious advantages of LED lighting solutions. They recommend using white LEDs that emit the least blue light and choosing a properly designed LED lighting scheme.

Schréder LED luminaires - the safe solution
The right lighting at the right time and in the right place has been the leit-motiv of Schréder for many years. We have always advocated lighting solutions that ensure a rational use of energy while creating safe, comfortable and sustainable environments.

Our luminaires have always been developed with optimised optics to direct light exactly where it is needed. It is therefore possible to maximise the luminous flux on the area to be lit while taking into account the surroundings.
Safety is guaranteed for pedestrians and motorists while glare, light trepass and light pollution are reduced to the minimum.
The directional flux of LEDs has enabled us to control the light even more, offering significant benefits for the well-being of the people and wildlife living in the area.

In highly built-up areas where luminaires are installed on wall brackets attached to residential housing, our luminaires can also be fitted with a back light control system to minimise the light spill from the back of the luminaire and avoid intrusive light into windows.

Equally, Schréder has always optimised its lighting solutions to ensure a safe environment at all times for the people using it. All of our luminaires respect the IEC-62471 standard and thus undergo photobiological tests which measure the intensity of the lighting components (including the blue light) to minimise discomfort for the human eye.

At Schréder, we propose and privilege warm white and neutral white LEDs in our luminaires, especially for lighting residential areas, city centres and campuses as they provide the required lighting levels with a light that is more pleasing to the human eye.
Cool white LEDs are limited strictly to luminaires lighting motorways or large areas where the luminaires are mounted on high masts and people spend little time and only, when the customer insists on this choice of LED. For while cool white LEDs initally offered a higher operating efficiency than neutral or warm white LEDs, this is no longer the case today.
We work with several LED suppliers and are continually sourcing new manufacturers to guarantee the best performance in our luminaires. For this reason, we are confident that neutral white LEDs can be used to light areas where high-power performance is required.

We also recommend our customers to combine smart control systems such as motion sensors or scheduled dimming with LED luminaires to lower the lighting levels when an area is not being used. Motion sensors that only increase the lighting levels when people are present not only dramatically cut energy costs but minimise potential detrimental human and environmental lighting effects.

At Schréder, we have always, and will continue to propose, well designed lighting solutions that transform public and private spaces into safe, comfortable, sustainable and smart environments with the well-being of the user at the heart of it all.

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