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patent
Synthesis of moving and beating moiré shapes
2022
The present invention proposes a method for producing an authenticable moiré shape that simultaneously moves and shows a beating effect. The method relies on a combination of the 1D or the 2D moiré and the level line moiré. When tilting a compound showing such a moiré, the moiré shape moves, its intensity levels change significantly but its shape remains the same and is recognizable. Embodiments comprise a base layer made of patterned metallic tiny shapes and a revealing layer made of a 1D array of cylindrical lenslets or of a 2D array of spherical or aspherical lenslets.
Use this identifier to reference this record
Type
patent
EPO Family ID
80470448
Inventors
TTO classification
TTO:6.2163
EPFL units
Patent number | Country code | Kind code | Date issued |
US11351810 | US | B2 | 2022-06-07 |
US2022072892 | US | A1 | 2022-03-10 |
Available on Infoscience
April 4, 2022