Serial number coding and decoding by laser interference direct patterning on the original product surface for anti-counterfeiting.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.014644
Abstract: Here, we investigate a method to distinguish the counterfeits by patterning multiple reflective type grating directly on the surface of the original product and analyze the serial number from its rotation angles of diffracted fringes.… read more here.
Keywords: original product; surface; interference; serial number ... See more keywords