Patent ID: 6799860
Filing Date: 2004-10-05
Classification: G02B,G02F

Abstract:
Lighting unit comprising:a light source having a light emitting surface; and a light guide that includes a first side surface having a first portion extending in a direction x and having a second portion defining a light incidence surface facing the light source, a second side surface extending in a direction y perpendicular to the direction x, a third side surface spaced from the second side surface in the direction x, and an outlet surface for exit of light; wherein the second side surface is formed with a plurality of recesses each including an inclined surface for causing light emitted from the light source to be reflected toward the third side surface; and wherein the first side surface is formed with a cutout for receiving the light source, the light incidence surface being provided at the cutout in facing relationship to the light emitting surface of the light source, the light incidence surface and the light emitting surface being inclined relative to the second side surface and the first portion of the first side surface.