Patent ID: 8529112
Filing Date: 2013-09-10
Classification: G02B

Abstract:
1. A light guiding bar comprising: first and second light incident portions at opposite ends of the light guiding bar and receiving light; a light exit portion which extends in a first direction, wherein the light exit portion partially totally reflects and partially emits the light according to an incident angle; and a reflecting portion which extends in the first direction and is adjacent to the light exit portion, and includes a plurality of reflecting surfaces facing the light exit portion, each of the reflecting surfaces having a wedge shape, wherein the reflecting surfaces reflect the light toward the light exit portion in a direction inclined with respect to a second direction substantially perpendicular to the first direction, wherein the light incident into the first and second light incident portions and directly incident on the light exit portion is totally reflected by the light exit portion, the light exits from the light exit portion toward the second light incident portion with an inclined angle between about 4° and about 7° with respect to the second direction when the light is incident into the first light incident portion, and the light exits from the light exit portion toward the first light incident portion with an inclined angle between about −4° and about −7° with respect to the second direction when the light is incident into the second light incident portions.