FIELD: lighting engineering.
SUBSTANCE: invention relates to a LED lighting device, more specifically to a LED lighting device having an optical component for mixing output light radiation from a plurality of LEDs. In this engineering field there is need for a LED lighting device, providing satisfactory mixing output light radiation from a plurality of LEDs, which will minimise chromatic aberration in an output light beam. LED device comprises: a longitudinally extending lighting device axis; a light output opening surrounding said lighting device axis; a plurality of printed circuit boards with LEDs located below said output light openings and surrounding said lighting device axis. Each of said printed-circuit boards with LEDs is substantially parallel to said lighting device axis and has turned from it into inner space LEDs, emitting output light beams having central axes of light beams; and a plurality of reflecting pyramidal structures formed inside relative to said printed-circuit boards with LEDs and arranged radially around said lighting device axis. Each of said pyramidal structures has a vertex closest to said lighting device axis, and a base, furthest from said lighting device axis, said base receives a large portion of said output light radiation from one of said printed-circuit boards with LEDs.
EFFECT: minimisation of chromatic aberration in an output light beam.
9 cl, 6 dwg
