Light emitting diode (LED):
LED technology is comparatively new and continues to develop rapidly. The positive features of LEDs include energy efficiency, precision light control, variable light colours and dimming from 0 to 100 percent.
For aesthetic, health and ecological reasons, warm white and amber LEDs are recommended.
Due to the residual emission in the blue range of some warm-white LEDs, the Austrian Outdoor Lighting Guideline recommends the use of a filter, also to counteract the age-related drift of light emission into the short-wave range.
The cold- and warm-white LED dilemma
Contents of LEDs