Patent ID: 8518515

Claim:
A multilayer optical recording medium with at least four or more recording and reading layers deposited one above the other with intermediate layers interposed therebetween, wherein information can be read by light irradiation from the layers, the multilayer optical recording medium comprising at least two or more recording and reading layer groups each including the recording and reading layers successively stacked in the order in which the recording and reading layers are disposed, wherein in each of the recording and reading layer groups, a specific recording and reading layer has a reflectance in a stacked state smaller than a higher value of reflectances in a stacked state of two successive recording and reading layers adjacent to the specific recording and reading layer and nearer a light incident surface than the specific recording and reading layer, and wherein regarding adjacent ones of the recording and reading layer groups adjacent to each other with an intermediate layer interposed therebetween, a recording and reading layer nearest a front side in the recording and reading layer group nearer a back side has a reflectance in a stacked state higher than a higher value of reflectances in a stacked state of two successive recording and reading layers nearest the back side in the recording and reading layer group nearer the front side.