Patent ID: 9091796
Filing Date: 2015-07-28
Classification: G02B

Abstract:
1. An optical coupling device for optically coupling a plurality of light sources with a light guide plate, the optical coupling device comprising: a plurality of transparent light guide portions, each of the light guide portions comprising: a light incident surface; a light emitting surface opposite to the light incident surface; a top surface perpendicularly connected to the light incident surface and the light emitting surface; and a bottom surface opposite to the top surface; wherein along a direction perpendicular to the top surface, a thickness of the light incident surface is greater than a thickness of the light emitting surface, the light incident surface is configured to optically couple with a respective one of the light sources, and the light emitting surface is configured to optically couple with the light guide plate; the light coupling device comprises a connecting portion having a pole-shape and being made of transparent material, the connecting portion is optically coupled with the light guide plate, the connecting portion connects the light guide portions together and contacts light emitting surfaces of the light guide portions to guide light rays emitting from the light emitting surfaces to the light guide plate.