SHEET MATERIAL WITH A FLOATING COMPOSITE IMAGE, WHICH CONTAINS MICRO-LENSES Russian patent published in 2008 - IPC G02B27/22 G02B5/128 

FIELD: sheet materials.

SUBSTANCE: sheet material contains at least one layer of micro-lenses, a layer of material, adjacent to one side of the layer of micro-lenses. In the layer of material a set of images is formed, at least one of which is the partially complete image. Each image is connected to one micro-lens in the set and contains one or several points, which are positioned depending on the angle of light fall onto each micro-lens in the set, which transfer the light into the material through refracting surface to produce one or more images which consist of images, created inside the material, under reflected or refracted light. The composite image "floats" above the sheet material, or below the sheet material, or in the plane of the sheet material. The sheet material is meant for manufacturing banknotes, clothes or accessories. The composite image may disappear or reappear when the observer changes position relatively to the sheet material.

EFFECT: sheet material is impossible to use for replication, possible observation with unaided eye.

3 cl, 16 dwg