| abstract |
The invention relates to an information carrier for scanning information by means of an optical beam having a wavelength. The information carrier comprises at least two information stacks. Each stack comprises a counter electrode (13, 17), an electrolyte layer (12, 16) and an information layer (11, 15). The information layer comprises an electrochromic material whose optical properties at the wavelength of the optical beam depend on a potential difference applied between the information layer and the counter electrode. |