Optical Anti-Counterfeiting Element and Optical Anti-Counterfeiting Product

An optical anti-counterfeiting element, comprising:

• a substrate;
• and
• a micro-structure layer, wherein the micro-structure layer is located on at least one side surface of the substrate and a plane where the micro-structure layer is located has at least one principal line, the micro-structure layer comprises a plurality of reflective structures along an extension direction of the at least one principal line;
• a side of each of the plurality of reflective structures away from the substrate is provided with a reflective surface, and a plane angle of a dihedral angle formed by the reflective surface and a surface of the substrate is an inclination angle;
• wherein inclination angles of all of the plurality of reflective structures in the extension direction of the at least one principal line at least comprise a variation period, and within the variation period, a variation of all of the inclination angles is formed by superposing a main variation and a secondary variation, and when the optical anti-counterfeiting element is rotated along a rotation axis in a plane where the optical anti-counterfeiting element is located, the optical anti-counterfeiting element presents a global dynamic feature and a localized dynamic feature due to the main variation and the secondary variation.