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14. September 2016
Lighting Design ›

Within a period of just a few years the LED has become the dominant artificial light source and has taken over in nearly all fields of lighting. We have witnessed a disruptive change which has made any previous technology obsolete. How much further will this trend go? What is an LED capable of and what is it not able to do and where do we find »ecological niches« for non-semiconductor light sources?

29. August 2016
Lighting Design ›

Exactly five years ago, in August 2011, a new version of EN 2464-1 for lighting in work places was released. This new version added new criteria and procedures to the previous version. The question is, however, whether these innovations have proved their worth. After our experience with this standard how do we assess it today?

27. July 2016
Lighting Design ›

It is important in lighting design that there is no flicker and that there are no strobe effects. Visually perceptible flicker is definitely a deficiency. But even flicker at high frequencies which are beyond the visually perceptible range should not be ignored. Studies have shown that this type of flicker can have an influence on the human organism.

Recently the term »Human Centric Lighting«, abbreviated to »HCL«, has been appearing in marketing communications of numerous luminaire manufacturers - especially in connection with LED products. It seems that there is not only »Standard Lighting Design« but also »HCL Lighting Design«. Is this really the case? What exactly is behind this catchword?

09. March 2016
Lighting Design ›

Daylight is a precious asset of incredibly high quality. It has an invaluable influence on the well-being of all mankind. And even in the world of work which mainly takes place under artificial light, there are new strains of thought which take the relevance daylight into account. This article will give a short introduction to the fundamentals of daylight and will provide two examples of norms/regulations which dealing with artificial lighting in places of work in which reference to daylight is now included.

24. February 2016
Lighting Design ›

Daylight is synonymous with natural light which reaches the earth from the sun. It is only available during the daytime, hence its name, in the time period between sunrise and sunset. Within the field of artificial lighting there are however an increasing number of products which promise to simulate natural daylight realistically. What is behind this?

19. August 2015
Lighting Design ›

Is there any designer who does not dream of a perfect lighting concept which can convey a feeling of well-being and shows the architecture at its best? It is often the case, however, that the brief received from the client causes difficulties. All too often discussions are peppered with such terms as LEDs and lux levels. There is an unconscious shift in thinking in the direction of norms and technology instead of placing questions about requirements and lighting quality at the centre of discussion. But what exactly is qualitative lighting design?

23. July 2015
Lighting Design ›

LED luminaires are becoming increasingly popular in home lighting. However, there are certain aspects of which the designer and user should be aware. One important issue is dimming or, to be more precise, dimming performance. For it is not just a question of dimmable or non-dimmable but, what is more important, a question of quality.

16. June 2015
Lighting Design ›

Every lighting designer is familiar with this situation – or at least he should be. Two LED luminaires from the same manufacturer with the same article number and the same colour temperature. But when compared directly with each other the colours seem to be very different. How can this be? And how can I avoid this situation as a lighting designer?

The historic town centre of Lüdenscheid is characterized by numerous buildings which have survived the centuries through careful restoration. Among these is one of the town's traditional restaurants, the old inn »Zum Schwejk«. This half-timbered building, dating from 1731, was fully restored in 2014 and new lighting was installed. DIAL was commissioned by the proprietor to design the lighting for the whole building, for the interior and for the striking facade.

14. April 2015
Lighting Design ›

Accentuation is one of the essential strategies in lighting. As an element in lighting design it is often underestimated by both clients and lighting designers, the reason being energy and investment costs. This is a plea on behalf of accent lighting.

17. February 2015
Lighting Design ›

There are numerous regulations and by-laws governing the application of electric light. The incandescent lamp has suddenly been phased out because it does not fulfil minimum requirements. What about taking an example from the food sector? Should we withdraw freshly squeezed orange juice from the market and only allow orange juice concentrates - arguing that the transport of the water content is too energy-intensive?