European Standards December 22, 2016 at 12:00 am
In Europe, since 2003, introduces single 'European standards illumination en 12464-1', detailed in the different countries in accordance with national conditions. In European regulations with regard to the following lighting parameters: * The illumination zones of visual performance * The illumination problem areas of the immediate environment * A generalized index of discomfort * Colour rendering index * Ripple illumination for workplaces with computers, in addition, regulated by limiting brightness lamps, reflected on the screen. The first two parameters describe the quantitative aspect of lighting, the other three – quality. We consider each of the regulated parameters. 1. Illumination band performance of visual tasks. Instead of general lighting of the premises, regulated by the same rules are now standardized illumination directly in the area perform visual tasks, ie in the workplace. This may be a desktop or just part of it.
Depending on the type of work performed in the area of illumination performance of visual tasks can be from 200 to 750 lux. In some areas lighting should be adjustable (conference rooms, meeting rooms, etc.). In areas where a large proportion of employees working with computers, normalized maximum brightness of lamps that can be reflected on the screen. For computers the old generation with the screens on the cathode-ray tubes without anti-glare coating, this brightness at an angle of 65o should not exceed 200 kandel/m2, for computers with lcd screens or with anti-reflective coating – 1000 kandel/m2. Light sources are constructed on the basis of light-emitting diodes have the angle of 15 to 120 degrees.