Patent ID: 8870429

Claim:
A lighting module comprising: a first side light source; a second side light source; a first light guide plate disposed between the first side light source and the second side light source; a second light guide plate disposed between the first side light source and the second side light source and disposed below the first light guide plate; a reflective plate between the first light guide plate and the second light guide plate; a first case coupled to one side of the first light guide plate, coupled to one side of the second light guide plate, and receiving the first side light source; and a second case coupled to the other side of the first light guide plate, coupled to the other side of the second light guide plate, and receiving the second side light source, wherein the reflective plate comprises a top surface and a bottom surface and wherein the top and the bottom surfaces of the reflective plate are coated with reflective materials having mutually different reflectances respectively, and wherein an amount of light which is emitted through a top surface of the first light guide plate is not equal to an amount of light which is emitted through a bottom surface of the second light guide plate.