OPTICAL INFORMATION RECORDING MEDIUM AND DRIVE DEVICE

摘要

An optical information recording medium includes at least one recording layer, a protective layer that transmits a focused laser beam, and a super-resolution functional layer that changes an optical characteristic in a local region smaller than the diffraction limit determined by the optical performance of the focusing optical system and the wavelength of the laser beam during at least the period of irradiation by the focused laser beam. The maximum thickness ( K ) between the light incidence surface of the protective layer and the recording layer is 0.083 mm.