Identification tag with hidden miniaturized images

摘要

A compressed print having one or more compressed images of a symbol is disclosed. The compressed images are formed on an image forming surface under a lenticular sheet. The lenticular sheet has a plurality of lenticules and each of the compressed images has a plurality of image elements formed under a lenticule. Each of the image elements is corresponding to a different portion of the symbol. The lenticules are designed to be so small that the compressed image formed under each of the lenticules is not discernible when a viewer looks at the compressed print at a normal viewing distance. As such, the miniaturized compressed images of the symbol can be used as an identification tag, hidden in the compressed print.

主权项

1. A method for producing a compressed image of a symbol on a print, the print comprising an image forming surface and a lenticular sheet disposed over the image forming surface, the lenticular sheet comprising a plurality of lenticules, each of the lenticules having a lenticular angle and a lenticular width, wherein the image forming surface comprises a plurality of surface area strips, each surface area strip located substantially under a lenticule and substantially equal to the lenticular width, said method comprising:
dividing the symbol into a plurality of image portions; and forming a plurality of image elements in each of two or more surface area strips for producing the compressed image of the symbol in each of said two or more surface area strips, each image element corresponding to a different one of the image portions, such that only when a viewing apparatus is placed in proximity of the lenticular sheet over said two or more surface area strips and a viewing angle of the viewing apparatus is greater than or substantially equal to the lenticular angle, substantially an entirety of the compressed image of the symbol is revealed by the viewing apparatus for identifying the symbol.