| 摘要 |
PURPOSE: A reproduction image reading method and a reproduction image reading device are provided to read out individual information one by one from a birefringence label which is recorded by duplicating plural kinds of information. CONSTITUTION: A first light source(21) irradiates a first read light onto a recording medium which stores different kinds of reproduced images according to the direction and wavelength of the polarized light. A second light source(22) irradiates a second read light onto the recording medium, wherein the second read light has the polarization state, direction and wavelength different from the first read light. A light reception unit reads out the reproduced image by receiving the light from the recording medium through a polarized filter. |
