Research on product anti-counterfeiting packaging design based on laser interference lithography
In order to improve the design effect of product anti-counterfeiting packaging,a design method of prod-uct anti-counterfeiting packaging based on laser interference lithography was proposed.Multi-beam interference infor-mation is controlled by fiber-coupled laser transmission,based on fiber waveguide beam splitting forming technology,integrated processing of beam propagation path,based on beam amplitude,phase and polarization joint modulation method,the anti-counterfeiting state characteristic of product anti-counterfeiting packaging is extracted,and the laser interference lithography model is constructed based on amplitude or phase microstructure diffraction unit array transmis-sion method.Multi-beam laser anti-counterfeiting of four beams,five beams and six beams is realized.The test re-sults show that the lowest tampering rate of the proposed method is 0.05％,the decryption time is short,all about 30 ms,MSE is 0.673％,PSNR is 40.40 dB,and SSIM is 0.975.This method is used to design the product anti-counterfeiting packaging,which improves the laser anti-counterfeiting ability of the product and reduces the tampering rate.
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