| 主权项 |
1. A light guide formed of a light transmissive member extending in a direction of an optical axis of light incident on an interior of the light guide and configured to reflect the incident light in a specific direction, the light guide comprising:
an incident surface provided at least one of both longitudinal ends of the light guide and allowing light emitted from a light source to be incident thereon; an exit surface forming one side surface of the light guide extending in the direction of the optical axis of the light incident through the incident surface, the exit surface allowing the incident light to exit the light guide therethrough; and a reflective surface located opposite to the exit surface to extend in the direction of the optical axis and including a plurality of light reflecting patterns formed to reflect the incident light toward the exit surface, wherein the light reflecting patterns have an oval hemispherical shape rising toward the exit surface and are formed to vary, depending upon location on the reflective surface in the direction of the optical axis, a ratio of a first diameter of the oval hemispherical shape to a height thereof when viewed laterally in the direction of the optical axis, the first diameter being perpendicular to the direction of the optical axis. |
