Please activate JavaScript!
Please install Adobe Flash Player, click here for download
ePaper created 2018-02-16, 10:54:19 | version 1.38.0
| opinion lighting Fig. 2a: 3-D visualisation of situation from Fig. 1a. Lighting is designed using requirements for office workplaces. The installation does not respect additional task areas. Fig. 2b: 3-D visualisation of situation from Fig. 1b. An insight into a model room with a directional/indirectional panel luminaire and additional luminaires to respect additional task areas. Fig. 2a Fig. 2b show that even the very basic requirement of task illumination is often neglected. Also task back- ground and overall illumination are often far too low, which has both eye and overall fatigue im- plications. As little as 30 lx have been repeatedly measured on the material preparation areas and computer desks. Many surgeries installed in existing buildings kept the original (office) luminaires, not quite following the lighting project. These systems were often projected according to an old standard that required as little as 300 lx for office work. Savings on lighting tend to generate much larger expenses later. The need for light grows with age. Other parameters of lighting like uniformity, glare, colour rendering or non-visual effects of light and lighting control will be discussed later in a dedicated article. Lighting the surgery with office luminaires only is not sufficient to fulfil basic requirements. Lighting using a single, powerful central luminaire provides enough light in the visual task area, but may easily fail to meet additional requirements. That is why additional luminaires are needed to provide back- ground area illumination and uniformity._ References 1. EN 12464-1:2011 Light and lighting—Lighting of work places— Part 1: Indoor work places. 2. Czech Government Regulation No. 361/2007 establishing the conditions of occupational health protection. 3. EN ISO 9680:2007 Dentistry—Operating lights (repl. 2014). 4. FUKSA, Antonín. Lighting in dental surgeries. StomaTeam. 2/2014. ISSN 1214-147X. 5. SVOBODA, Filip. Lighting in dental surgeries in Romania— a summary report. Personal communication, 2015. about Antonín Fuksa graduated (MSc) in 2000 at the Czech Technical University in Prague, Faculty of Electrical Engineering in the field of study Measurement and instrumentation. He currently works as a developer of intelligent luminaires, smart lighting systems and chronobiological phototherapy devices in NASLI. 12 cosmetic dentistry 1 2017