Patent ID: 8300174

Claim:
An optical member comprising: a plurality of convex lenses; a lens sheet including said plurality of convex lenses on a surface thereof; a light diffusing sheet disposed so as to face said lens sheet and configured to diffuse light; and a light reflecting member provided between said lens sheet and said light diffusing sheet, and selectively disposed to correspond to boundary areas of the plurality of convex lenses, wherein: said plurality of convex lenses have anisotropy to collect light such that the surface of said lens sheet has a light guiding direction and a non-light-guiding direction that crosses the light guiding direction; said light diffusing sheet is configured to have diffuseness larger in the light guiding direction of said lens sheet than in the non-light-guiding direction of said lens sheet; the plurality of convex lenses are convex cylindrical lenses; said lens sheet is configured to included the convex cylindrical lenses arranged in parallel; and said light diffusing sheet is configured to have the diffuseness larger in a parallel direction of the convex cylindrical lenses than in a longitudinal direction of the convex cylindrical lenses.