Patent ID: 7952976

Claim:
An optical reproducing device comprising: a reproducing component that includes a light source that emits coherent light, a spatial light modulator that is configured by plural pixel components that are two-dimensionally arrayed and which modulates and outputs, per pixel and in accordance with a display pattern, light that has been made incident thereon from the light source, and a light guiding component that guides the light that has been modulated by the spatial light modulator to an optical recording medium, with the reproducing component irradiating, with reference light that has been generated by the spatial light modulator as reading light, a Fourier transform hologram that has been recorded in the optical recording medium using signal light and reference light, to thereby reproduce the signal light from the optical recording medium; a splitting component that is disposed on a signal light exiting side of the reproducing component and splits, into two light waves, the signal light that has been made incident thereon from the optical recording medium side; a first image acquiring component that is disposed on an exiting side of the one split light wave that has been split by the splitting component and detects the one split light wave to acquire a first reproduced image; a second image acquiring component that is disposed on an exiting side of the other split light wave that has been split by the splitting component and detects light where a direct current component has been removed from the other split light wave to acquire a second reproduced image; and a decoding component that uses the first reproduced image and the second reproduced image to decode data that the signal light has.