| 摘要 |
The invention relates to a product surface (1) comprising a first optoelectronically readable code (5), which is formed by an arrangement of planar cells (6) of a first cell type and planar cells (7) of a second cell type. It is an object of the invention for the code to have a large detectable region and the readability thereof to be robust in relation to demands during the production and/or the use of the product surface (1). The object is achieved by virtue of the cells (6, 7), as integral components of the product surface (1), having a surface profile (3), by virtue of an intensity difference ∆I = I2 – I1 in the intensity I2 reflected by the surface profile (3) of the second cell type and the intensity I1 reflected by the surface profile (3) of the first cell type emerging in the case of light incidence as a result of the embodiment of the 15 surface profiles (3), by virtue of the product surface (1) having a second code (51) embodied thus and by virtue of the maximum of the absolute intensity difference |∆I1| of the first code (5) lying in a different reflection direction than the maximum of the absolute intensity difference |∆I2| of the second code (51). |
