| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a three-dimensional optical recording medium which can increase a recording capacity for optical information and can accurately record and reproduce the optical information. <P>SOLUTION: The three-dimensional optical recording medium OM of the present invention has a recording area for a positioning signal determining a recording location of optical information set only at an edge portion 14. This three-dimensional optical recording medium OM can secure a recording area for optical information in a wide area other than the edge portion 14, so the recording capacity for optical information can be made large. Then this three-dimensional optical recording medium OM can have the recording area for optical information and the recording area for the positioning signal individually set, so scattering of recording light and reference light by the optical information recording layer 12 can be avoided. Consequently, optical information can accurately be recorded and reproduced on this three-dimensional recording medium OM. <P>COPYRIGHT: (C)2007,JPO&INPIT |
