Answers to DIN EN 12464-1

The new workplace standard simplifies lighting design

licht.de has asked its chairman Peter Dehoff four questions about the new workplace standard DIN EN 12464-1, to which he actively contributed as chairman of the working group at the European Committee for Standardization CEN. We wanted to know: What´s new? Who is it good for? And how do lighting designers deal with the new standard?
Why does the standard have a new first part and what has changed?
“After ten years the standard needed a revision. In addition, the CEN working group wanted to contribute new findings – for example, on the non-visual effects of light. The standard DIN EN 12464-1 “Lighting of indoor workplaces“ is one of the most widely used guidelines we know in Europe. We did not want to change it completely or define new values, but make it more readable and understandable. The essential parameters are now easily visible and accessible in a table.“

Lighting designers asked us: Why does the directive specify such high illumination levels?
„As before, the standard defines a minimum which has not changed compared to the former guidelines. The second value for the illumination levels may leave the impression to be new – but it is not at all. Previously there has also been an opportunity or need to increase the illumination level, such as when a higher productivity is required or older employees need more light. There is a relation between illumination level, productivity and wellbeing of humans. All this is what the second, modified value now expresses.“

How does the lighting designer deal with the new standard?
“For concrete support we have added a new chapter. It describes measures for the planning of lighting systems, covers all aspects from visual task to room lighting and deals with the variability of lighting, control, daylight and maintenance factors. The designer learns, which aspects have to be taken into account and can apply the standard more easily.“

Will we all from now on be working in better light?
“I am convinced that with these approaches we offer designers a much better instrument for the development of high-quality, good and future-oriented lighting systems which offer the best possible environment to the user – and thus ensure better workplaces.“