| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hologram recording method and a hologram recording device where the superimposition between signal light and reference light coaxially emitted is enlarged by a simple method, and diffraction efficiency can be improved. <P>SOLUTION: The light of each pattern in which a plurality of unit blocks each comprising at least one picture element and expressing luminance are arranged, which is also divided into the region of signal light and the region of reference light, and further, is produced in such a manner that the region of the reference light comprising a plurality of unit blocks with the different number of picture elements is formed. The formed light is condensed with the common optical system, and is emitted to an optical recording medium, and data expressed by the signal light are recorded as a hologram. <P>COPYRIGHT: (C)2008,JPO&INPIT |
