What are Lenticular Lenses? They are sheet of clear plastic with a series of parallel, convex lenses. Using the concept of binocular disparity, these lenses are placed upon an interlaced image to produce a wide variety of Lenticular effects. Including: 3D Depth, Flip, Animation, Morph, and Zoom.
Not to be confused with lenticular lenses you find in bifocal eye glasses.