| 摘要 |
According to one embodiment, in an information recording medium in which letting H 1 (nm) a groove depth of a first substrate on which a first recording layer is formed, H 2 (nm) a groove depth of a second substrate on which a second recording layer is formed, H 11 (nm) a thickness of a first dye layer at a land area, H 12 (nm) a thickness of the first dye layer at a groove bottom area, H 21 (nm) a thickness of a second dye layer at a land area, and H 22 (nm) a thickness of the second dye layer at a groove bottom area, the groove depth H 1 of the first substrate and the groove depth H 2 of the second substrate satisfy |H 11 -H 12 |=alpha, |H 21 -H 22 |=beta, lambda/8n<=H 1 -alpha<=lambda/3n, and lambda/8n<=H 2 -beta<=lambda/3n.
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