| 摘要 |
Provided is an optical sheet hardly causing a change in color depending on the observation angle of an image, the optical sheet including a plurality of layers, at least one of the layers being an optical functional sheet layer including prisms arranged in parallel along a surface of the optical sheet such that light is transmittable; and light-absorbing portions arranged in parallel between the prisms in a way to absorb light, at least another one of the layers being a light diffusing material-containing layer with optical diffusing particles dispersed in a base material, and the optical sheet satisfying a relation of NdK <NdR and vdK <vdR, wherein NdK is a refractive index of the base material of the light diffusing material-containing layer, vdK is an Abbe number thereof, NdR is a refractive index of the optical diffusing particles and vdR is an Abbe number thereof. |
