LIGHT-EMITTING DEVICE Russian patent published in 2017 - IPC H01L33/50 F21K9/64 

FIELD: lighting.

SUBSTANCE: light-emitting device includes a light source emitting light with the first spectral distribution, a light guide made of a luminescent material and comprising of light input and output surfaces extending at a non-zero angle to each other. The light guide also contains an additional surface located opposite the surface of the light output. The light guide is adapted to convert a portion of the first light into the second light with the second spectrum distribution. In addition, the light-emitting device includes a phosphor element adjacent to the additional surface and a reflecting element adjacent to the phosphor element. The phosphor element converts the light, incident from the light guide, into the third light with the third spectral distribution. The light guide adopts light with the third spectral distribution and outputs it from the light output surface.

EFFECT: increase of reliability and durability of the device.

17 cl, 18 dwg, 1 tbl