Patent ID: 8588046
Filing Date: 2013-11-19
Classification: G11B

Abstract:
1. An information recording device, comprising: a light source; a diffraction element that splits light emitted from the light source into a large number of diffracted light rays; and a converging element that converges the large number of diffracted light rays onto different converging points, wherein light emitted from the light source is split into a large number of diffracted light rays by the diffraction element, the large number of diffracted light rays are converged by the converging element onto different converging points at three dimensional positions in a photosensitive layer of an information recording medium, a specific interference pattern is formed in the photosensitive layer of the information recording medium by using a set of the converging points, the photosensitive layer is exposed in accordance with the intensity distribution of the interference pattern, and the refractive index of the photosensitive layer is varied according to the light intensity, thereby recording information in the photosensitive layer of the information recording medium.