| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical sheet which exhibits good optical performance even after being adhered to a target member to be an integral part thereof.SOLUTION: An optical sheet 1 has a light incident surface 3a and a light exit surface 4, from which light entering the light incident surface 3a exits, and includes a first light transmissive layer 2 and a second light transmissive layer 3 laminated between the light incident surface 3a and the light exit surface 4, with a first lens group 5 comprising first lenses 5A, 5B two dimensionally arranged to form the light exit surface 4, and a second lens group 7 comprising second lenses which are located between the light incident surface 3a and the first lens group 5, has a second lens surface 6 to constitute an interface between the first light transmissive layer 2 and the second light transmissive layer 3, which are next to each other in a thickness direction, and are arranged spaced apart from each other in a direction crossing the thickness direction. Viewing from the thickness direction, an area ratio of the first lens group 5 is greater than that of the second lens group 7. |
