| 摘要 |
PURPOSE:To reproduce easily and at a low cost a diffraction grating body having a pattern- shaped diffraction grating part by covering the surface on which a rugged part is provided of a diffraction grating body, with a rugged part of a resin layer formed part by a resin layer provided to a desired pattern, and using the diffraction grating body obtained by forming the pattern-shaped diffraction grating part on a resin layer non-formed part, as a reproducing mold. CONSTITUTION:A resin layer 11 is provided to a desired pattern on the surface on which a rugged part 1 is formed of a diffraction grating body 2. In this case, the diffraction grating body 2 on which the rugged part 1 is formed can be used directly by an optical method, etc., but in order to reduce a manufacturing cost, the diffraction grating body 2 is used as a reproducing mold, its reproduced goods or reproduced goods obtained by further reproducing said reproduced goods are mass-produced, and the resin layer 11 of a desired pattern is provided on the reproduced goods. As for the resin layer 11, a suitable resin is used by considering an adhering property to a materal of the diffraction grating body to be used, strength, etc., and said resin layer can be provided to a desired pattern by a general printing method, handwriting, a transfer, etc. An uneven part 1a of a resin layer formed part is covered with the resin layer 11, and a diffraction grating body 13 obtained by forming a pattern-shaped diffraction grating part 12 on a resin layer non-formed part is obtained. Subsequently, the reproduction is executed by using the diffraction grating body 13 as a reproducing mold 14. |
