发明名称 Data recording and readingout system
摘要 <p>In a data recording and readingout system in which data is recorded and readout, or is readout on, or from an optical recording medium 1 by irradiating a laser beam having a wavelength "»" via an objective lens of a numerical aperture "NA" onto said optical recording medium, while the optical recording medium contains a layered structure formed by sandwiching a dielectric layer 6 between a recording layer 7 and an optical absorption layer 5, with respect to the optical recording medium 1 arranged in such a manner that data recorded by a recorded mark train can be readout and the recorded mark train contains a recorded mark smaller than, or equal to a limit of resolution, the laser beam is irradiated via the objective lens and a solid immersion lens having a refractive index "n" which is positioned between the optical recording medium and the objective lens, so that the data is recorded and readout, or is readout with respect to the optical recording medium by a recorded mark train which contains a recorded mark smaller than, equal to "»"/(4·n 2 ·NA)."</p>
申请公布号 EP1632937(A2) 申请公布日期 2006.03.08
申请号 EP20050019117 申请日期 2005.09.02
申请人 TDK CORPORATION 发明人 KIKUKAWA, TAKASHI;FUKUZAWA, NARUTOSHI;KOBAYASHI, TATSUHIRO;AOI, TOSHIKI;UTSUNOMIYA, HAJIME
分类号 G11B7/00;G11B7/24 主分类号 G11B7/00
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