FIELD: physics.
SUBSTANCE: method of obtaining a vario-image in a liquid inside a vessel involves forming a template which is placed on the wall of the vessel and using an optical system to obtain a vario-image from the template when viewed through the liquid. The optical system has a lenticular lens raster and a liquid inside a vessel. The lenticular lens raster is placed on one wall of the vessel and the template is placed on other opposite wall. The template used is a vario-template. The focal distance of each lens is calculated from the condition of the focus lying on the vario-template and taking into account parameters of a specific liquid.
EFFECT: creating a high-quality vario-effect in a liquid, which enables to protect contents of the vessel from falsification, with easy authentication.
4 cl, 2 dwg
