OPTICAL ANTI-COUNTERFEITING ELEMENT WITH FULL PARALLAX DIFFRACTION OPTICAL VARIABLE IMAGE

摘要

An optical anti-counterfeiting element with a full parallax diffraction optical variable image. The optical anti-counterfeiting element comprises: a base layer (101); and an optical component (102) at least partially covering a surface of the base layer (101), the optical component (102) having a micro relief structure, so that when a beam of white light is irradiated onto the optical component (102), the optical component (102) presents a full parallax image under the effect of the micro relief structure. A micro relief structure is obtained with a phase plate, so that a full parallax diffraction optical variable image can be reproduced under the condition of white light illumination.