| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical sheet capable of suppressing the occurrence of color unevenness and providing high-quality images. <P>SOLUTION: A multilayered optical sheet arranged on an observer side than an image source and adapted to emit light to the observer side by controlling incident light from the image source side, includes a base material layer and an optical functional layer laminated on the base material layer. The optical functional layer includes light transmitting parts 13 arranged side by side along the sheet surface so as to be capable of transmitting light, and light absorbing parts 14 arranged side by side between the light transmitting parts so as to be capable of absorbing light. In a cross section in a sheet thickness direction, the light absorbing part has a dent 18 having a curved line shape or a folded line shape on its surface which is the opposite side of the base material layer and includes at least two layers 15, 16 in the sheet thickness direction, and a refractive index of the layer 16 laminated on the surface opposite from the base material layer is the highest in the light absorbing part. <P>COPYRIGHT: (C)2012,JPO&INPIT |
