A composite lenticular film includes a first layer having a first refractive index, and a second layer having a second refractive index less than the first refractive index. The second layer is integrally attached to the first layer. The first layer has at least one row of protruding lenses....http://www.google.fr/patents/US7619823?utm_source=gb-gplus-shareBrevet US7619823 - 1D and 2D composite lenticular films and fabrication methods
1D and 2D composite lenticular films and fabrication methods
