Patent ID: 7130092
Filing Date: 2006-10-31
Classification: G03H,G11B

Abstract:
1. An optical information recording apparatus for recording information in an optical information recording medium having reflecting layer and information recording layer in which information recorded utilizing holography in the form of an interference pattern as a result of interference between information light carrying two dimensional digital pattern information and reference light for recording having a spatial modulation for, the apparatus comprising: an information light generating means for generating the information light carrying the two dimensional digital pattern information; a recording reference light generating means including modulation means for spatially modulating the light, for generating the reference light for recording being spatially modulated by the modulation means; and a recording optical system, for illuminating the information recording layer on a same side thereof with the information light and the reference light for recording such that the information is recorded in the form of an interference pattern as a result of using the reflecting layer as a reference plane to generate interference between the information light and the reference light for recording, wherein the recording optical system projects the information light and the reference light for recording such that an optical axis of the information light and an optical axis of the reference light for recording are located on a same line.