Apparatus for lighting, especially electric lamps and luminaires; lighting apparatus and systems based on the said lighting apparatus, especially lighting apparatus and systems based on light emitting diodes (LEDs), including organic light-emitting diodes, LED lamps and LED luminaires and their parts (included in this class), lighting lamps and lighting apparatus and lighting facilities and lighting systems based on the aforesaid lighting lamps and lighting apparatus and their parts (included in this class) on basis of light emitting diodes (LED); LED-modules, namely modules constructed of LEDs (inclusive organic LEDs) with light functions for lighting applications