| 摘要 |
<p>An optical sheet (optical member) (20) is provided with: a sheet-shaped substrate (40) having light transmitting properties; anisotropic light-condensing parts (41) formed on a light-entry-side plate surface (40a) of the substrate (40), on which light is incident, for imparting a light-condensing effect in a light condensing direction along the light-entry-side plate surface (40a) to incident light, while having light-condensing anisotropy so that a light-condensing effect is not imparted in a non-light-condensing direction which is along the light-entry-side plate surface (40a) and orthogonal to the light condensing direction; and anisotropic light-diffusing parts (42) formed on a light-exit-side plate surface (40b) from which light exits, on the reverse side of the substrate (40) from the light-entry-side plate surface (40a), for causing light from the anisotropic light-condensing part (41) side to exit while scattering the light, the anisotropic light-diffusing parts (42) having light-scattering anisotropy so that the amount of scattered light in the non-light-condensing direction decreases as the amount of scattered light in the light condensing direction increases.</p> |
