Patent ID: 8371738

Claim:
A lighting device comprising: at least one light source; a plurality of light guide members, each of the light guide members disposed so as to face the light source and including a light entrance surface through which light from the light source enters and light exit surface through which the light exits, the light exit surface being disposed parallel to an arrangement direction in which the light source and the light entrance surface are arranged, the light guide members being arranged parallel to each other so as to be parallel to the light exit surface and perpendicular to the arrangement direction; a low-refractive-index layer having a refraction index lower than that of the light guide members disposed between the adjacent light guide members; and a scattering structure located on each of the light guide members at an interface between each of the light guide members and the low-refractive-index layer and configured to scatter light inside each of the light guide members; wherein the interface is a vertically straight surface in a macroscopic view.