DEVICE AND METHOD FOR IDENTIFYING CODINGS UNDER A TRANSPARENT FILM

摘要

The invention relates to a method for identifying an object covered by a transparent layer at least in some sections by determining a surface property. In order to provide a method by means of which property parameters of a surface of an object, which surface is covered by a transparent layer, can be determined especially simply and reliably, an optical system according to the invention detects at least two polarization planes of light that is reflected by the surface of the object and the surface of the transparent layer and determines the surface property, while taking into account the detected polarization planes, in order to identify the object.