Figure 1
From: High-resolution 1D moirés as counterfeit security features
Linear 1D moirés. (a) Representation of a 1D moiré rectilinear base and revealing (lenticular array) layers. The moiré image is revealed when both elements are superimposed. (b) Schematic view of the moiré shapes (in cyan) generated by the superposition of a base layer with replicated base bands (‘VALID’ in green) and of transparent revealing layer lines (dashed red lines). (c) Example of a base band grating made of a replicated, vertically compressed text (‘VALID’), with the moiré revealed by a transparent line grating (revealing layer).
