LIGHTING DEVICE Russian patent published in 2019 - IPC F21K99/00 F21K9/232 

FIELD: lighting.

SUBSTANCE: invention relates to lighting engineering. Lighting device (1, 11, 21) containing base (4, 14, 24), plurality of light sources (3, 13, 23) and housing (2, 12, 22) from light-transmitting material. Base has first side (4a, 14a, 24a) and second side (4b, 14b, 24b), and on the first side of the base there are multiple light sources. Light sources have a common output direction. Housing is configured to transmit light, it surrounds the base and has first section (2a, 12a, 22a) of said housing and second housing section (2b, 12b, 23b) located substantially opposite the first section relative to the base. Plurality of first optical elements (6, 16, 26) can be located substantially opposite to the output direction of the plurality of light sources along the first body section facing the first side of the base. Base is configured to transmit light. Plurality of first optical elements is configured to transmit a portion of light emitted by the light sources and to reflect a portion of the light emitted by the light sources through the base toward the second body section.

EFFECT: technical result is increase in the angular divergence of light.

13 cl, 3 dwg