| 摘要 |
<P>PROBLEM TO BE SOLVED: To remove an influence of interlayer crosstalk due to unnecessary light in a multilayer optical recording medium having at least three recording layers. <P>SOLUTION: Each recording layer includes an information recording area 224, and recording layers 202 to 205 other than the nearest recording layer 206 and the farthest recording layer 201 when viewed from a light incident side include a first annular area 223 with uneven patterns thereon and a second annular area 223 with uneven patterns thereon, wherein the first annular area is adjacent to an inner circumferential side of the information recording area 224 and the second annular area is adjacent to an outer circumferential side of the information recording area. <P>COPYRIGHT: (C)2010,JPO&INPIT |
