| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical diffraction structure of a hologram, a diffraction grating and the like having a durability free from peeling and flaw to an optical card to observe from the same surface side of an optical record reading surface. SOLUTION: This optical card 100 is formed by laminating an optical recording member 5 laminated with a surface case 1 at a surface side and an optical recording layer 4 at an inner surface of a transparent base member 2 having a truck pattern 3 with a card base member 7 through an adhesive layer 6. In this case, an optical diffraction structure 8, which is so structured as to be provided between the optical recording member and the card base member, becomes a card by laminating and bonding the optical recording member to the card base member at the adhesive layer 6, after fixed with the optical recording member 5 or the card base member 7 at the adhesive layer 9 by an adhesive mass or an adhesive and the like. |
