Landscape & Urban Design Issue 53 2022 | Page 80

LIGHTING
Although this will potentially illuminate a larger area , due to the scattering of blue light via atmospheric particles , it is more harsh on the eye and can have a negative affect on surroundings . Colour temperatures above 4000K have a cool , blue like appearance , and it is this end of the colour spectrum which has the most negative influence on wildlife , particularly bats . Studies have shown that warmer colour temperatures of 2700-3000K , which are more of a red light and otherwise known as warm white , result in a lot less distraction to our wildlife with less impact on their habitat . Bats and other wildlife respond to red light more like they would the dark , but blue light will deter bats from crossing the light . This can result in them not feeding as they should , especially as some insects are attracted to blue light , which is their food source . In addition to the affect on wildlife , a softer , more cosy warm white light is much more appealing in primary areas to create a natural ambience of light . In some applications , daylight white fittings can work well but this should be paired with an anti-glare design , if possible , and warm white should be a serious consideration in areas where there is an abundance of wildlife .
PIR – the PIRfect Solution ? Incorporating PIR lighting into your design has multiple benefits on the environment , locally and globally . Often , lighting is only required at certain times , particularly when people are approaching the area . A PIR ( passive infra-red ) sensor controls illumination by way of motion detection . Lighting is only generally required when somebody is in the vicinity to add safety to the area . When the PIR is triggered , the luminaire will illuminate but then dim or turn off completely when the detection area is clear . Not only does this prevent light pollution and protect nocturnal wildlife from artificial light , it also reduces energy consumption . Excessive energy usage from fossil fuels does take its toll on the planet ( and our bank balance ). PIR lighting dramatically reduces the impact of wasted light and energy consumption in comparison to constant lighting all night long . Pair this with solar and then you will decrease your carbon footprint even further .
If a constant light is required , choose lower level LED lighting , ideally in warm white . Where daylight white is a must , opt for lower lumens output fittings which will have less impact on the wildlife than extremely bright , constant light in daylight white . Small changes can make a big difference and now is the time we need to all do our bit to help protect our planet .
Any good supplier will do what they can to offer energy efficient , eco friendly lighting . Lumena Lights Ltd offer a huge range of outdoor lighting for all applications : low voltage , mains voltage and revolutionary solar . Lumena use high quality materials and technology for fittings which are constructed to last . Warm white and daylight white options are available with many anti-glare and low light pollution designs . Contact them today with your requirements and they will be glad to recommend the best options for your installations .
www . lumenalights . com
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