| 摘要 |
It is an object of the invention to allow the use of a practical light source to record information in each information recording area of a recording medium having a plurality of information recording areas through the use of holography while moving the recording medium. When recording information in the information recording areas ( 7 ) of the recording medium, the irradiating position ( 101 ) of information light and recording-specific reference light is moved such that the irradiating position ( 101 ) follows a single moving information recording area ( 7 ) for a predetermined period. Consequently, the single information recording area ( 7 ) keeps being irradiated with the information light and the recording-specific reference light for the predetermined period. Information is thus recorded in this information recording area ( 7 ) in the form of an interference pattern as a result of interference between the information light and the recording-specific reference light.
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