Abstract:The microlens array anti-counterfeiting film technology is a new anti-counterfeiting technology, which is easy to observe and easy to identify, especially in the environment of insufficient light. A high sensitivity positive photoresist AZ 1500, a high-resolution positive photoresist AZ MIR-703 and a negative SU-8 photoresist were used to produce a microlens array anti-counterfeiting film. Photoresist melting was used to fabricate the microlens array, PDMS was used to fabricate the reverse mold of the microlens array, SU-8 and PDMS reverse mold were used together to make the final microlens array, and the photoresist AZ 1500 was used to fabricate the microtext array. Subsequently, a kind of microlens array anti-counterfeiting film with a stereoscopic effect was obtained. The experimental characterization and analysis show that the microlens array anti-counterfeiting film prepared by the method has obvious effect and good uniformity. Compared with other methods, the method has the advantages of simple process, low requirement for material and equipment, stable process parameter and easy control. It is a simple and novel method.