| 摘要 |
An optical device is provided and includes a substrate having a three-dimensionally random concave-convex shape on the surface thereof, and a hard coat layer formed on the substrate, wherein a projection height with the maximum frequency on the substrate surface falls within the range of 1.5μm or more and not more than 10μm. Projections larger than the projection height with the maximum frequency on the substrate surface have a height falling within +3μm from a central value of the projection height with the maximum frequency. A length RSm in a lateral direction of concaves and convexes on the substrate surface is 55μm or more and not more than 500μm.
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