The device has light emitting diodes (2a-2e, 3a-3d, 4a-4c) (LEDs) of three different groups arranged in planar units. The LEDs are distributed in a two-dimensional geometrical pattern on the planar units. Planar centroid of the pattern lies on an axle cent...

Illumination system comprises a fluorescent lamp (2) and an LED (6) which is mounted behind it, with respect to the direction of illumination (13). An optical guide (10) is mounted between the LED and lamp and conducts the light in the same direction.

The light unit (2) comprises a lens (7) preferably made of a transparent plastic material, and provided with a light outlet surfaces (9) which is smaller than the light inlet surface (8).

Illuminating element comprises an illuminating diode (8) built into a support (1), and a waveguide element (6) optically coupled with the diode. The waveguide element has a smaller light emission surface (7) than the diode.