| 摘要 |
<p>[PROBLEMS]To achieve higher forgery prevention effect.[MEANS FOR SOLVING PROBLEMS]An indication boy (10) is provided, on one major surface of a light transmission layer, with a protrusion/recess structure region including a plurality of recesses and/or protrusions arranged two-dimensionally as an image component, and provided with a reflective layer covering at least a part of the protrusion/recess structure region while being supported on one major surface wherein the distance between the centers of both the recesses and the protrusions falls in the range of 200-500 nm. A plurality of protrusion/recess structures are provided and in at least one protrusion/recess structure region, the shape, the depth or height, the distance between the centers and the arrangement pattern of the plurality of recesses and/or protrusion are different from those of other protrusion/recess structure region.</p> |
