Librous characteristics for the lighting

There are special approval characteristics that show what must be observed in high quality lighting. The classic approval characteristics of lighting can be divided into three main categories: visual comfort, the visual performance and the visual ambience. These consist as follows:

Visual comfort:

• Nature -loving color rendering to the correct distinction of colors, which is specified by the color rendering index as CRI or RA
• Harmonious distribution of brightness due to a balanced ratio of the luminous density

Vision:

• Lighting level for sufficient brightness, specified in lumen (LM)
• Dlocking limitation for trouble-free seeing without reflex or direct blinding, particularly important for workplaces, specified by the UGR value

Visual ambience:

• Sladiness to recognize surface structures
• Light color in Kelvin for a suitable space mood and color detection
• Light direction to control the lighting 

If all of these quality characteristics are taken into account and sufficiently met by a lamp, it can be assumed that this is very good. With individual values, such as the light color, there is no good or bad, but rather to match the situation or not. This also applies to the brightness and light distribution of the lamp. In addition, other criteria such as energy efficiency or special setting options can also be used for light planning.