Patent ID: 7233565

Claim:
An optical recording medium comprising: a substrate; a first information recording layer formed on the substrate; a first light transmission layer formed of a resin on the first information recording layer, the first light transmission layer having a thickness of 40 μm or less; a second information recording layer formed on the first light transmission layer; and a second light transmission layer formed of a resin on the second information recording layer, the second light transmission layer having a thickness of 170 μm or less, wherein a laser beam is irradiated on a side of the second light transmission layer so as to allow recording and/or reading of an information signal on/from the first and second information recording layers, wherein a portion of the upper surface of the first light transmission layer, corresponding to an outer radial portion of the information recording area of the second information recording layer, is biased toward the substrate from a surface corresponding to the information recording area.