OPTICAL DISK AND METHOD FOR MANUFACTURING OPTICAL DISK

摘要

An optical disc of a desired thickness is formed by adhering a stamper substrate 20 to an L0 layer substrate 10. Concave/convex portions to transfer fine concave/convex portions for an L1 layer are formed on one principal plane of the stamper substrate 20. After the fine concave/convex portions for the L1 layer were transferred and formed onto an intermediate layer 32 by the stamper substrate 20, the stamper substrate 20 is adhered to the L0 layer substrate 10.