The invention relates to a visual optical anti-counterfeiting film used for
certificate surface, belonging to the public safety precaution and identification technical field. The optical anti-counterfeiting film can be widely applied to anti-counterfeiting and identification of identity certificates such as identity card, passport, police identification card, press card,
certificate of lawyer, admission card for event and the like. The invention is characterized in that the optical anti-counterfeiting film is composed of a base layer, an
information layer, a
metal or
metal compound layer and an embedding protective layer at least which are sequentially arranged from the top to bottom, wherein the interior of the base layer is embedded with multiple space frequency composite modulation
microstructure stripe. Compared with the prior art, the invention has the following advantages: spatial use ratio is high,
diffraction image without mutual interference can be seen at different angles in the same region; image vision angle width reappears in reflected light direction, colour saturation is high, influence of
environmental lighting source is less; the reflected light direction can be light discoloration produced by the way that light
continuation is simultaneously taken place on more than three broken colours; the restored true colour combined by RGB three colours can be reproduced in the reflected light direction; dynamic
diffraction image can be reproduced by virtue of edge lighting light. The invention can be widely applied to visual anti-counterfeiting identification of identity certificates of resident identity card, passport, police identification card, press card,
certificate of lawyer, teacher certificate.