| 摘要 |
An optical disk configured as a laminated disk including a 0.6 mm thick transparent substrate and a protective substrate that are bonded with an adhesive element, wherein a data recording layer and a reflection layer are layered on the transparent substrate, a thermal layer and a transparent protective layer are layered on the protective layer, and the inner circumference area has a disk clamp area surface that protrudes from the surface, and the disk thickness of the disk clamp area surface is 1.4 mm and the thickness of the other area is 1.2 mm. Also provided is an optical disk recording device including a turntable, and an optical pickup provided with optical elements including an objective lens suitable for a 0.6 mm substrate, wherein a protruding section of the optical disk is set on the turntable, and the laser beam from the objective lens is focused on the thermal layer to record visual information.
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