Patent ID: 6871974
Filing Date: 2005-03-29
Classification: G02B

Abstract:
1. A lighting unit comprising: a light guiding plate having a top surface and a bottom surface as a pair of principal surfaces, a plurality of side surfaces formed on outer peripheries of the principal surfaces, and plurality of corner portions each of which is formed by intersecting adjacent two side surfaces of the plurality of side surfaces, the side surface a pair of the corner portions forming a light incident face; and a light source provided along the light incident face of the light guiding plate, the light source having both end portions forming non-light-emitting portions and a portion between the both end portions forming a light-emitting portion, respectively, in which light emitted from the light source and incident on the light incident face of the light guiding plate emanates from the top surface of the light guiding plate, wherein the light source is disposed such that the non-light-emitting portions correspond to the pair of the corner portions, respectively; and at least one of the pair of corner portions of the light guiding plate has an inclined face formed so as to intersect the light incident face, the side surface adjacent to the light incident face, and the top surface, and to face obliquely upward.