PE Plus headlights are projection headlights, whose reflector surfaces cannot be described by basic mathematical forms, but are formed freely in space. The free spaces are arranged in such a way that the light distribution is no more regulated by a screen but can contribute almost the entire light generated towards lighting. For the design of the reflector surfaces special computation methods are necessary. With the same mounting space the luminous efficiency of PE-Plus headlights is clearly higher compared to that of PE Headlights.
The improvement of the luminous efficiency of PE-Plus headlights in comparison to the PE Headlights is shown as a percentage. The Lighting power of the bulb is hence set to 100%.