| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an optical sheet capable of exhibiting excellent optical performance and surface scratch resistance even when integrally bonded to a member to be bonded.SOLUTION: An optical sheet 1 having a light incident surface 3a and light emitting surface 4 comprises: first and second light transmitting layers 2 and 3 laminated between the light incident surface 3a and the light emitting surface 4; a first lens group 5 having first lenses 5A and 5B arranged in two direction and forming a part of the light emitting surface 4; a second lens group 6 which has a plurality of micro lenses 16 projected further than the first lenses 5A and 5B and including a lens surface 4c having a curvature radius larger than those of the top parts of lens surfaces 4a and 4b and arranged apart from each other and forming the other part of the light emitting surfaces 4; a third lens group 7 having prism-lens surfaces 8a and 8b formed by an interface between the first and second light transmitting layers 2 and 3 and arranged. An area ratio of the third lens group 7 viewed from the thickness direction is 60% or more and 100% or less.</p> |
