Patent ID: 8506154
Filing Date: 2013-08-13
Classification: G02B,G02F

Abstract:
1. An optical assembly comprising: a light emitting module that includes a plurality of light emitting devices to emit light; a light guide plate that includes a first part to receive light from the light emitting devices, a second part to output the light, which is received from the first part, through a top surface thereof, and at least one protrusion on a top surface of the first part, wherein the light guide plate includes a step portion between the first part and the second part; and a side cover provided at one side of the light emitting module that surrounds a portion of the light emitting module and couples the light guide plate and the light emitting module, and the side cover includes a plurality of holes to receive the at least one protrusion, wherein the side cover includes a first side cover over a portion of the first part of the light guide plate and over the light emitting module, and a second side cover under the light emitting module and a portion of the light guide plate, wherein the plurality of holes are provided in the first side cover.