| 摘要 |
<p>PROBLEM TO BE SOLVED: To display information relating to an optical memory element, which is a design of characters and patterns or the like and purposing improvement of decorative design, for example, information of manufacturing numbers, lot numbers or the like, a mark for adjusting a position or the like, without affecting to a reproduction image. SOLUTION: This element is an optical memory element 10' which comprises resin core layers 2 and resin clad layers 3 laminated on both surfaces of the resin core layer, which has one or a plurality of light guiding members 323 having an unevenness part 5 for information on at least one side of a boundary between the resin core layer and the resin clad layer, and in which a reproduction light is guided to the resin core layer and scattered by the unevenness part for information, and the scattered light is emitted from the surface to the outside, and a reproduction image is obtained, and the element is provided with coloring layers 20 comprising a material which transmits light having a wavelength of the reproduction light and can absorb visible light having a wavelength other than wavelength of the reproduction light, at a side at which the scattered light is emitted.</p> |
