LUMINAIRE Russian patent published in 2016 - IPC G02B6/00 F21V8/00 F21S8/02 

FIELD: lighting.

SUBSTANCE: invention relates to lighting engineering and can be used in luminaires that enable use of more sparsely distributed light sources. Luminaire comprises planar top and bottom light guide layers (10, 11) that are optically coupled together by at least one optical coupler (12a, 12b), which allows passage of light from top light guide layer (10) to bottom light guide layer (11). At least one optical coupler is an edge coupler for coupling adjacent edges of top and bottom light guide layers. Luminaire has scattering element (14), to create light radiation from emitting surface of bottom light guide layer (11). Upper light guide layer (10) comprises first (16a) and second (16b) light sources in cavity (17), which turned from each other and are arranged to emit light to corresponding one of lateral sides of cavity in opposite directions, parallel to longitudinal axis, so that light passes along longitudinal axis of top light guide layer (10).

EFFECT: high uniformity of illumination brightness and good colour mixing.

12 cl, 20 dwg