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LED survey shows importance of 'human factor'

17 May 2016

Installing LED lighting should include human reaction as a primary factor, says a new report commissioned by the Society of Light and Lighting (SLL), part of CIBSE.

At present, decisions are typically made on the basis of delivering improvements in efficiency and cost says the survey, which was conducted to show the positive and negative effects of exposure to light from LED sources.

It confirmed that these are valid energy efficiency choices in comparison to other options.

Performance claims are generally accurate and none of the LEDs tested presented a risk of retinal damage when used correctly, the survey found.

Another finding was that LEDs should be considered as part of the entire light fixture and its surrounding environment to determine suitability.

However, the survey showed that consideration for flicker or colour rendering of lamps should be made when deciding on which option to choose.

Approximately half of domestic and office LEDs showed higher flicker rates than alternative sources, which could lead to adverse health symptoms in a "very small number of those regularly exposed", said the report.


SLL president-elect Jeff Shaw described the report as a "valuable collection of data that will be extremely useful in enabling both the public and private sector to make informed choices when looking to procure LED lighting solutions and promote energy efficiency".

Recognising advances made by LEDs in the last 10 years, Mr Shaw said there many considerations when choosing the correct solution and how to deliver it.

"What this report highlights is the need to consult a properly trained and qualified designer or engineer using the latest guidance to get the most of out of an LED solution, and to ensure it is the best choice for people and the environment."

Further findings are available within the full version of the report.


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