Multi-stack rolled-up information carrier

An optical scanning device for scanning an information carrier (1420) by means of an optical beam (1402) having a wavelength, said information carrier comprising a central hole (11) and at least two information stacks roll up around said hole, wherein each information stack comprises a first electrode, a second electrode and a material whose optical properties at the wavelength of the optical beam depend on a potential difference applied between the first and second electrodes, said optical scanning device comprising means for receiving said information carrier, means (1401) for generating the optical beam, means for applying a potential difference between the first and the second electrode of an information stack, means for focusing (1407, 1408) said optical beam on an information layer, said focusing means being mounted with rotation possibility inside said receiving means.

A method of manufacturing an information carrier, said method comprising the steps of manufacturing an information strip comprising at least one electrode and a material whose optical properties at the wavelength of the optical beam depend on a potential difference applied between two electrodes, winding said information strip around a transparent hollow element (12) and cutting the electrode at each turn in the winding step.